The flora of Mt. Orizaba

The Flora of Mt. Orizaba. H. Leaton The following notes and report are based upon a collection of plants made on Mt. Orizaba by the writer while Botanist of the J. I. Seavell expedition during July and August, 1891. The first collections on Mt. Orizaba to which there is any scientific reference were made by Frederick Liebmann in 1841. He describes the volcano as the most remarkable mount ain in North America. It has a latitude of 18° and lies surrounded by the very fertile country of Southern Mexico. It is only 90 miles from the gulf and having such a situation, there is presented up on its eastern slope every phase of vegetation from tropical to alpine. The regions in the vicinity of Cordoba and Orizaba at elevations of 3000° and 4000° and distances of sixty and seventy five miles from the coast were the lowest stations at which collect. ions were made. At that altitude, the vegetation is sub-tropical. Palm, coffee, banana & orange trees grew in abundance and maize and sugar cane attained a high degree of cultivation. Prominent

among the families that made up the shrubby herbaceous flora were the Malvaceae, Legum. osidae, Cucurbitaceae, Rubiaceae, Composi- tae, Asteriaceae, Convolvulaceae, Nolanaceae, Euphorbiaceae and Commelinaceae besides the grasses, sedges and ferns. In the vicinity of Orizaba, the Compositae had their greatest display. The essentially American Helianthoideae were the forms most abundant and not only are they characteristic of this particular region but have in Mexico their greatest concentration, amounting, it has been estimated to, 32% of the species and 1/5 of the genera of all the Compositae of the country. The suborder Eupatorieae ranks sec- ond in numerical strength, the genera Eupa- atorium & Stevia however contributing nearly all the species. The Asteriadeae had but little representation in the forms that are so characteristic of the north, Solidago, Aster and Erigeron. All the other sub orders of Compositae were present, extcepting the Arctotideae and Calendulaceae which are confined to Africa and the Mediterra- nean regions. Collections were made at three successively higher stations till the altitude of 9000' was reached Agerionium and the grasses of the sandy plain below. This was the highest point collections were made by the writer but several species extend their range a few hundred feet higher and Dr. J. secured an Oraba at

below. This was the highest point collections were made by the writer but several species extend their range a few hundred feet higher and Dr J. secured a Draba at 15,000°. The – is a list of the species as they have been deter. and at the close a synopsis of the des. of the f. g. 4 sp. and this zone of 5000° may be considered as the temperate region and that above 9000° as alpine . Many plants of the subtropical region extend their range to the temperate and even to the alpine district, this being especially true of low growing plants like Oxalis, Stellaria Trifolium and several of the Malvas. The temperate zone between 4000° and 9000° is characterized nevertheless by many genera & families that are not present or are hardly noticeable in the more tropical regions. The genus Salvia and order Hythraceæ have an especially large distribution. Of the latter, Cuphea is the most important element growing in great abundance under all condi- tions of soil & moisture . Here are many representations from the Geraniaceæ, Boragin- aceæ, Scrophularineæ, Verbenaceæ, Bignoni- aceæ, Acanthaceæ and Amaranthaceæ which take the place in a great measure of the Cucurbits, Rubiaceæ, Aclepiads, Solanums, Euphorbias and Commelinas in the tropics. Great changes are experienced in the flora as the slopes are ascended above 9000°, and there are well marked zones for the dis- tribution of the plants till the limit of vege- tation is reached. Between 9000° and 10000°,

species of Sisymbrium, Lepidium, Leum, Laxa, Epilobium, Oenothera, Bouvardia, Krynitzkia minulus, Castilleja, Verbena, Salvia, Plantago and Chenopodium are the most characteristic forms of the herbaceous flora. Prominent among the Compositae are Stevis, Achilea, Dahlia and Tagetes and besides Eupatorium and Baccharis, the shrubby flora is represented by Rubus and Symphocarpus. Prominent among the grasses are Bromus, Festica, Agrostis, Trisetia, Poa or Muehlenbergia and the ferns are represented by Asplenium, Adiantum, Cheilanthes or Woodsia. At 1100°-1200°, the forests are entirely of pines or spruce. The greater part of the herbaceous flora at this alt. is made up of Penelomon, Valeria, Cerastium, Avena, Eryn- gum, Aracacia, Cnicus, Lupinus or Steranthium. At 1300°, the vegetation consists prin- cipally of Nasturtium, Cerastium, Arenaria, Potentilla Phaelia, Castilleja Withoopermium. The pine woods beginning at 700° disappear at 13,000°, except-ing stunted forms that continue to 14000°. At 13500° the vegetation becomes scantier and the slopes more sandy and beset with masses of sharp pointed black or gray rocks. The dry ground produces species of Draba, Graphelium, Se-neio, Cnicus, Agostis, Bromus or Asplenium. Even at 14000° on the higher slopes just at the snow line there exists quite a varied vegetation with species of Draba, Sisymbrium, Graphelium, Cnicus

"The Flora of Mt. Orizaba. among the first collections made on Mt... H. Edeaton The following notes and report are based upon a collection of plants made on Mt. Orizaba by the writer while Botan ist of the J. T. Dowell expedition dur ing July and August, 1891. (The first collections on Mt. Orizaba to which there is any scientific reference, were made by Frederick Lieb- mann in 1841. He described the Volcano of Orizaba as the most interesting mountain in North America. It has a latitude of 18° and lies surrounded by the very fertile country of Southern Mexico. It is only 90 miles from the Gulf and having such a situation there is presented upon its eastern slope every phase of vegetation from tropical to alpine.) The regions in the vicinity of Cordoba & Orizaba at elevations of 3,000° and 4,000° and distances of 60 and 75 miles from the coast were the lowest stations at which collections were made. At that altitude the vegetation is sub-tropi- cal. Palm, coffee, banana & orange trees grow in abundance & maize & sugar cane attains a high degree of cultivation. Prominent among the fami- lies that make up the shrubby and banana

"herbaceous flora were the Malvaceae, Leguminosae, Rubiaceae, Compositae, Aclti-pi-adaceae, Convolvulaceae, Solanaceae, Eu-phorbiaceae and Commelinaceae besides the grasses, sedges and ferns.) In the vicinity of Orizaba the Compositae had their greatest display. The essentially Amer-ican Helianthoidiae were the forms most abundant and not only are they character-istic of this particular region but have in Mexico their greatest concentration, amounting it had estimated to 32% of the species and 7/5 of the genera of all the Compositae of the country. The sub Order Eupatoridae ranks second in numerical strength, the genera Eupatorium & Vicia however contributing nearly all the species. The Asteroidae had but little representation in the forms that are so characteristic of the North - Solidago, Aster, Verigeros. All the other sub orders of the family were present, excepting the Arctotidaceae & Calendulaceae which are confined to Africa & the Mediterra-nean region. (1) Collections were made at three successively higher stations till the altitude of 9000" was reached and this zone of 5000" may be considered as the temperate region and that above 9000" as al-pine. Many plants of the subtropical region extenda their range to the temper-ate and even to the alpine district, this being especially true of low growing plants

pine. Many plants of the subtropical region extend to the temper ate and even to the Alpine district, this being especially true of low growing plants like Oalis, Stellaria, Trifolium and several of the Malvae. The temperate zone is character- ized nevertheless by many genera & families that are not present or are hardly noticeable in the more tropical regions. The genus Salvia & Order Lythraceae have an especi- ally large distribution. Of the latter, Cephela is the most element, growing in great abund- ance under all conditions of soil & moisture. There are many representatives from the Gerania- ceae, Boraginese, Scrophularinese, Verbeneceae, Acencharicee & Amaranthaceae which take the place in a great measure of the Rubiaceae, Aclepiadae, Solanums, Euphorbiae and Cornel- inae in the tropics. Great & rapid changes are experienced in the flora as the slopes are as- cended above 7000°, and there are still marked zones for the distribution of the plants till the limit of vegetation is reached. Between 9000° and 10,000°, species of Sieybrimium, Lepidium, Geum Lava, Epilobium, Aerothera, Krypitzkie, Mimulus, Castilleia, Verbena, Salvia, Plantago and Chenopodium are the most characteristic forms of the herbaceous flora. Prominent among the Compositae are Shiva, Alkilea, Dahlia & Tagetes and besides Eupatorium & Baccharis, the shrubby flora is represented by Rubus, Symphoricarpus & Buddleia. Prominent among the grasses are Bromus, Festuca, Agrostis and Muhlenbergia and the ferns are represented by

Asplenium, Adiantum, Cheilanthes and Pteris. At 11,000°-12,000°, the forests are entirely of pines & spruce. The greater part of the herbaceous flora at this altitude is made up of Penstemon, Malenia, Ceratium, Aescena, Eryngium, Aracaria, Cnicus, Lupinus & Stevantium. At 13,000°, the vegetation consists principally of Nasturtium, Ceratium, Arenaria, Potentilla, Phacelia, Castilleia & Lithospermum. The pink woods beginning at 7,000°, disappear at 13,000°, excepting stunted forms that continue to 14,000°. At 13,500° the vegetation becomes scantier and the slopes more sandy & bare with masses of sharp pointed black & grey rocks. The dry sandy soil produces species of Draba, Graphalium, Erecio, Cnicus, Agrostis, Bromus and Asplenium. Even at 14,000° on the higher slopes just at the snow line, there exists quite a variety vegetation with species of Draba, Sieymbrum, Graphalium, Cnicus, Asplenium & the grasses of the sandy plain below. This was the highest point at which collections were made but few eral species extend their range a [illegible] hundred feet higher & Dr. Scovell secured a Draba at 15,000°. The following is a list of the species as they have been determined and at the close is a synopsis of the distribution of the families, genera & species. In the limited space

2. Ranunculaceae fernandez-jansch 1 Thalictum longistylum D.C. Along streams. Quisaba - 4000° July 25. 2 Arenare mexicana HBK Rocky brooks near Mallorata - 5482° Aug 16. OK 3 Ranunculus gridoes HBK Pine Forests - Mt. Boothy map carefully MT Quisaba - 11000° Aug 5. (2) 4 Ranunculus peruvianus Pers. Mt. Quisaba, 13000° - Aug 7. Papavaceae. 5 Arenare mexicana L. Common in open fields. Esperanza Aug 14. 8000°. Crucifeseae 6 Nasturtium impatiens chrisole.? Mt. O. 9000° - Aug 4. 7 Helypodium sp². Mt. O. 11000° Aug 5. 8 Draba myosotoides Hms. Mt. O. 14000° Aug 7 9 Helypodium sp². Mt. O. 10000° Aug 8. 10 Sisymbrium canadensis Mutt. Mt. O. 14000° Aug 7. var.? structocarpum 11 Sisymbrium galloctanum Jours. Mt. O. 9000°. Aug 4. 12 Brassica sativa L. (Introduced) Common Quisaba - 4000°. July 23. 13 Sisymbrium sp². Mt. O. 9000° Aug 9.

14 Lepidium virginicum L. Mt. O. 9000°. Aug. 9. 15 Lepidium humboldtii D.C. Mt. O. 9000° Aug. 9. Capparidaceae Gymnodopsis speciosa DC. 16 Cleome sp.² Cordoba. 3000°. Aug. 70 17 Cleome sp.². Cordoba 3000° Aug. 70. Polygalaceae. 18 Polygala - n.sp.² near acicularis - not. a sp. described from Chichashua in.86. Barlundiite² Mt. O. 9000°. Aug. 9. Scopano 113/E 19 Polygala - sp.² Cordoba 3000°. Aug 71. Caryophylleae. 20 Silene laciniata K Cav. In shady rich ra. vines. Mt. O. 10000° Aug 8. 21 Cerastium vulcanicum / Schle. Mt. O. 12000°. Aug 6. 22 Cerastium sp.² Mt. O. 11000° Aug 6. 23 Cerastium sp.² Mt. O. 13000. Aug 7. 24 Stellaria prostrata Bels. Climbing on rocks. Orizaba 4000°. July 29. 25 Stellaria nemorum L. Cordoba, 3000° Aug 20. 26 Arenaria alsinoides Wills Mt. O. 900°. Aug 6. 27 Arenaria alsinoides H ( narrow leaves form ) Orizaba 4000°. July 31.

28 Arenaria decussata Wils Mt O 1000 Aug 8 29 Arenaria sp Mt O 9000 Aug 8. 30 Drymaria anomala Wat. 9000° Aug 8. (Not reported by Hamley from Mex.) Hypericineae. 31 Hypericum pauciflorum HBK Orizaba 4000° July 30. Malvaceae. 32 Malva borealis Malm (Introduced) Orizaba 4000° July 29 33 Callirhoe n sp? (C. involucrata the only sp reported) Mt O 9000 Aug 4 34 Malvastrum tricuspidatum Gay Orizaba 4000° July 23. 35 Anoda cristata Schell Orizaba, 4000° July 29 36 Sida ulmifolia Cav Nogales 4204° Aug 4 37 Sphaeralcea sp City of M 1000° July 70. 38 Pavonia spinifex Wills Common Orizaba 4000° July 30 39 Pavonia typholea Cav. Orizaba, 4000° July 30 40 Malvaiceus grandiflorus Orizaba & Nogales 4000° & 204°, Aug 24, 5 Aug 13 Geraniaceae 41 Geranium Mexicanum HBK Mt O 10000° Aug 8.

42 Geranium hernandeziae DC . Mt O, 1000° Aug 5. 43 Geranium potentillofolium DC. Mt 1000°. Augs 44 Erodium cirrharium L. Her. Along the railroad - Esperanza 8000°. Aug 15. 45 Oxalis corniculata L. Orizaba 4000° July 29 v Mt. O. 10000°, Aug 6. 46 Oxalis aequalionis TVG . Limestone ridges. Mt. O. 9000°. Aug 8. No oxalis is reported by Hims from Mt.O Rutaceae 47 Zanthoxylon sp? Near City of M. 7000° July 20. Simarubaceae. 48 Pteramnion sp?. Orizaba 4000°. July 30. Rhamnaceae Ceanothus aqneus - Gulf? 49 Ceanothus [illegible] Rocky Hills- near Maltata- 5482° Aug. 16. Leguminosae. 50 Crotolaria- nearest incana L. Maltata. 5482°. Aug. 51 Crotolaria sagittalis - L. Along railroad. Cordoba 3000° Aug 21.

3 52 Lupinus Mexicanus - Crev. Abundant in Pine Forests Mt.O. 12000°. Aug 7. 53 Lupinus elegans - HBK. Mt.O. 12000° Aug 6, 54 Lupinus sp¹ Near Esperanza - on Rocky hills . 8000° . Aug 14. 55 Trifolium amabile - HBK - Mt.O. 10000. Aug. 56 Trifolium reflexum - L. (A very narrow leaves form.) Orizaba. 4000°. July 29. 57 Medicago lupulina - L. (Introduced). Orizaba 4000° . July 23. 58 Eysenhardtia amorphoides HBK - 'Leaves 1) pods very long ! Near Maltrata. 5482°. Aug 16. 59 Dalea plumosa - Watson. W. Oax. 8000° Aug 5. 60 Dalea sericea - Lag. -- Both Daleas on rocky hills - near Esperanza. 61 Indigofera mucronata - Spreng. Nogales. 4202°. Aug 62 Indigofera sp¹ Orizaba 4000°. July 2 63 Astragalus Helleri - Friz. Mt.O. 9000°. Aug 8. 64 Desmodium orbiculare Schlect. Maltrata. L 5482°. Aug 15. 65 Desmodium sp¹ Esperanza - 8000° 66 Desmodium sp² Orizaba 4000° 67 Desmodium sp² Orizaba 4000° 68 Desmodium sp² Mt. O. 10000. Aug 5. 69 Diolea sp¹. Mt. O. 9000°. Aug 8. 70 Phaseolus anistrichus - Schl. Oriz. 4000°.

71 Phaseolus monopoides Gray ? Oriz. 4000 72 Phaseolus sp.? Esperanza 8000 Aug 15 73 Rhynchosia longicemosa Mark Gal. Orizaba 4000 July 74 Rhynchosia sp? Mt. O. 9000 Aug 8. 75 Rhynchosia sp?. Esperanza 8000 Aug 14. 76 Eriosema sp?. Mt. O. 9000 Aug 8. 77 Sophora sp? Cordoba 3000 Aug 20. 78 Cassia chamaecrista L.? Coos. 3000 Aug 21. 79 Cassia occidentalis L. Nogales 4202 80 Cassia patellaria DC. Oriz. 4000 July 31 81 Tornia diphyllo Pers. Oriz. 4000 82 Acacia farnesiana Hills Oriz 4000 83 Acacia felicina Hills Oriz 4000. 84 Pithecolobium brevipilum Benth. Esperanza. Rocky hills 8000 Aug 15. Rosaceae Trilobus Moc & Soco 85 Rubus n.sp.? Near the Aqueduct. Mt. O. 10000 Aug 8. 86 Rubus sp?. Found only in fruit Mt. O. 10000 Aug 6. 87 Geum n.sp. nearest macrophyllum. Mt. O. 10000 Aug 8. 88 Potentilla richardii Lohm? Mt. O. 13000 Aug 7. 89 Acena elongata L. Mt 17000 Aug 6.

Grassulaceae 90 Cotyledon sp² On shady cliffs - Esperanza 91 Cotyledon sp² 8000° Aug 14. Melastomaceae 92 Rheyia sp² Cordoba. 3000° Aug 20 Himsley doubts the presence of R. in Mexico. 93 Heeria¹, sp⁷. Cordoba, 3000° Aug 20. Lythraceae 94 Cuphea aequipetala Cav. Esperanza, 8000° 95 Cuphea cyanea . DC² (Flows red roses !) Orix. 4000° 96 Cuphea hypopifolia NBK Cordoba. 3000° Aug 20. 97 Cuphea lanceolata Ait. (Pedicels not de- flexed.) Orix. 4000° 98 Cuphea llavea Slav & Lex. Orix. 4000° 99 Cuphea Polukana Beyr. Esperanza. 8000°. Onagraceae 100 Epilobium Mexicanum DC. Mt. O. 10,000° Aug 8.

101 Jussiea peruviana - L. Arizaba. 4000° Aug 13. 102 Jussiea suffruticosa - L. Orig. 4000° Aug 13. 103 Oenothera rosea - Ait. Common in open fields. Orig. 4000°. July 29. 104 Oenothera linuata Mx, Mt. O. 10000° Aug 5 105 Oenothera [illegible] Pine forests. Mt. O. 11500°. Aug 6. 106 Lopezia mexicana - Dsg. Rocky hills Arizaba. 4000°, July 31. 107 Lopezia pumila HSK. Mt. O. 9000° Aug 8. 108 Laura coccinea - Nutt. Mt. Orig. 9000°. Aug 4. Passifloraceae 107 Passiflora Mexicana - Ties. Cordoba. 3000° - Aug 20. Cucurbitaceae 110 Melothria scabra - Saus. Mt. O. 9000° Aug 4. Begoniaceae 111 Begonia megaphylla - DC. Sides of cliffs along rail road. Near Malta - 5482°. Aug 16.

4. Umbelliferae 1/2 Eryngium cynolum Delar. Mt. O. 10,000°. Aug. 5. 1/3 Eryngium protaeflorum -Delar. Mt. O. 12,000°. Aug. 6. 1/4 Sanicula mexicana DC". Orizaba. 4000° July 29. 1/5 Arracacia acuminata -Buth. -Orizaba. 4000°- July 30. 1/6 Apium leptophyllum J.Müll. Mt. O. 9000° Aug. 8. Reported for the first time from Mt. O. 1/7 Angelica mexicana Vatke -Oriz.4000°.July 29. 1/8 Peucedanum sp". Mt. O. 10,000° 1/9 Oemorrhiza brevistylio -DC. Mt. O. 12,000°- Aug. 6. 1/20 Daucus pusellus -Mx. Mt. O. 10,000° Aug. 6. Reported for the first time from Mt. O. the only station given in Hemsley being Chihuahua. 1/21 Arracacia sp". Mt. O. 9000° 1/22 Arracacia sp". Orizaba, 4000°- Capsifoliaceae 1/23 Sambucus canadensis Linna. Rather common. Orizaba, 4000°- July 29.

24 Symphoricarpos microphyllus N.BK. Mt. O. 10,000° - Aug. 8. Rubiaceae 125 Bouvardia triphylla Ssib. Mt. O. Shady Woods - 10,000° - Aug. 5. 126 Bouvardia quaternifolia DC. Mt. O. 10,000° Shady Woods. Aug. 5. 127 Bouvardia leiantha Beuth. Orizaba, Rocky Hill 4,000° - July 31. 128 Houstonia n.sp² (Rocky Hills) Orizaba¹ 4,000° - July 30 129 Cuscea sp² Orizaba 4,000° - July 31 130 Cuscea sp² Mt. O. 10,000° Aug. 6. 131 Cuscea sp² Cordoba 3,000° Aug. 21. 132 Spermacoce levis Lam - Orizaba, 4,000° - Aug. 24. 133 Spermacoce parviflora G.F.W.Meay. Cordoba, 3,000° Aug. 21. 134 Richardsonia scabra A.St.Hil. Cordoba, 3,000° - Aug. 21. 135 Galium mexicanum N.BK Orizaba, 4,000° - July 31. 136 Galium mucinulatum DC. Orizaba 7,000° July 29. 137 Galium - nearest propetalum Hens Mt. O. 10,000° - Aug. 5.

138 Valeriana\n 139 Valeriana mexicana DC. Mt. O. 9000° Maltrato - 5482° - Aug. 16. 140 Valeriana scandens Linn. Along roads. Orizaba - 4000° July 27. Compositae 141 Piqueria trinervia Cav. Mt O. 9000° Aug 8. 142 Operatum Mexicanum Sins Orizaba. 4000° - July 26. 142 Stevia conferta DC. var puberula DC (DC,\nnot Hem.) Mt. O. 9000° Aug 8. 143 Stevia elation HBK. Near Esperanza, 8000° - Aug 14. 144 Stevia josefolia Niles - var. Bogotensis, DC. Near Nogales - 4202° - Aug 13. 145 Stevia lucida Lag. Near Maltratra- Rocky hills - 5482° - Aug 16 146 Stevia salicifolia Cav. Mt. O. 7000° Aug 4. 147 Stevia tracheloides DC. (Leaves &-menton\nbelow.) Maltrato, 5482°, Aug 15. 148 Eupatorium grandidentatum DC. Mt. O. 12000° - Aug 6 149 Eupatorium populifolium HBK Around\nfields Orizaba - 4000° July 26.

150 Gymnopera multflorum DC Near Mal trata on Rocky hills - 5482° Aug 15. 151 Heterotheca inuloides Cass. Mt. O. 9000° Aug 8. 152 Aphanostephus humilis Gray . Mt. O, 10,000° - Aug. 5. 153 Eigeron canadensis L. Common along de. cutes roads Cordaba 3,000° Aug 20. 154 Eigeron coronopifolius Gray Mt. O, 10,000° Aug. 5. 155 Grapholium spicatum Lam. . Mt. O. 10,000° - Aug. 8. 156 Melampodium divaricatum DC Common in open fields. Orizaba 4000° July 23. 157 Melampodium oblongifolium DC. Orizaba 4000° - Aug. 24. 158 Melampodium perfoliatum HBK. Orizaba 4000° July 27. 159 Parthenium hysterophorus Linn. Orizaba 4000° July 23. 160 Ambrosia artemisiaefolia L. Common along the railroad O. July 26. 161 Linnea leptopoda DC Maltiata on a rocky hill, 5482° Aug 15. 162 Heliopsis bupthalmoides Dun. Common along railroad - Orizaba 4000° Aug 24. 163 Laluzaria angustha Schz Bip Mt. O. along sides of cliffs . 9000° Aug 9.

5. 164 Sclerocarpus schiedeanus B.W. Orizaba. 4000° July 23. 165 Ithomia diversifolia Gray Not reported by Hemsley. Orizaba 4000° Aug 24. 166 Viguiera canescens DC. Near Esperanza 8000° Aug 15. 167 Viguiera, n sp² Woods near Esperanza 8000° Aug 15. 168 Gymnolomia sp² Woods near Esperanza. 8000° Aug 15. 169 Helianthus sp² Abundant in open fields. Esperanza 8000° Aug 14. 170 Melanthera deltoides Rich. Rather common along the R.R. Orizaba, 4000° Aug 24. 171 Actinomeris ovata Nutt. Near Esperanza, 8000° Aug 14. 172 Polymnia maculata Cav. Orizaba 4000° Rocky Hill July 31. 173 Synedrella vialis Gray Orizaba, 4000° July 25 Not reported by Hems. 174 Dahlia coccinea Cav. Orizaba, 4000° July 13. 175 Dahlia variabilis Dief. In shady ravines - Mt. O. 10000° Aug 8. 176 Galinsoga parviflora Very Common in Roadsides. Orizaba 4000° July 23 177 Dysodia chrysanthemoides Lag. Along the Veracruz R.R. Near City of M. 1000° July 20

178 Jagetos erecta L. Along the rail road near Cordoba - 3000° - Aug 21. 179 Jagetos lucida Cav. In open fields Nogales. 4202° - Aug 13. 180 Jagetos patula L. Rocky hill Near Es peranza - 8000° - Aug 15- 181 Chrysactinia mexicana Gray. Rocky hill near Esperanza - 8000° - Aug 15. 182 Achillea millefolium L Common on sandy plains near Esperanza - 8000° Aug 15- 183 Senecio gerberaefolius Schrn Mt O. 13,500° - Aug 7. 184 Senecio prostrambens NBK . Mt. O. 13,500°. Aug 7. 185 Schistocarpa bicolor Less. Near Cordoba 3000° - Aug 21. 186 Sonchus oleraceus L (Common as an intro- duced herb). Arizaba 4000° July ? Esperanza - 8000° - Aug 14. 187 Pinaropappus roseus Less. On limestone leages Mt O. 9,000° - Aug 8, Lobeliaceae 189 Lobelia laxiflora NBK Along banks of streams Cordoba 3000° Aug 20. 190 Lobelia sp? Mt O. 9000° Aug.

Plumbaginaceae 191 Plumbago pulchella Boiss. Maltrata. Rocky Hill - 5482° - Aug 15. Primulaceae 192 Anagallis arvensis L. (Introduced) Woods near Maltrata - 5482° - Aug 16. Asclepiadaceae 193 Asclepias curassavica L. Common in open fields. Orizaba 4000° & Nogales 4302° 194 Asclepias ootata Mart. & Gal. Rocky Hill Orizaba, 4000° July 31. 195 Gonolobus fraternus Schl. Orizaba, 4000° - July 196 Gonolobus gracilis Dene. Rocky Hill. Maltrata - 5482° - Aug 15. Loganiaceae 197 Buddleia lanceolata Benth. Mt. O. 9,000° - Aug 4. Gentianaceae 198 Haleria nudicaulis Mart. & Gal. Mt. O. 12,000° - Aug 6.

Polemoniaceae canulea - Dow. 199 Loeselia - sp. Mt. O. 9000° Aug. 7. Hydrophyllaceae pimpinelloides look up Guther 208 Phacelia n. sp. Mt. O. 11300°, Aug 5 Boraginaceae 200 201 Heliotropium Indicum L. Cordoba. 3000° Aug 21 202 Heliotropium limbatum Benth. Gassy hills near Malt rata - 5482° Aug. 16. 203 Krantzilia angustifolium Torr. Common at 10000°. Mt. O. Aug. 6. 204 Lithospermum distichum Art or spathulatum, M. S. Gassy hills. Esperanza. 5000°, Aug 14. 205 Lithospermum strictum Schm. Esperanza Aug 14. 206 Lithosper...on sp. Mt. O. 13000° Aug. 6. Convolvulaceae 207 Ipomaea sp² Arizaba 4000° Aug 24. 208 Ipomaea sp stand Cov. Esperanza 5000° Aug 14. 209 Ipomaea sp² Mt. O. 9000° Aug 8. 210 Ipomaea sp² Cordoba 3000° Aug 21 211 Ipomaea sp² Cordoba 3000° Aug 21 212 Ipomaea sp Arizaba 4000° July 25. 213 Ipomaea sp. Arizaba 4000° July 25 214 Ipomea bona-mal L. Arizaba July 25.

6. 215 Cuscuta gonovii. Mills. Common on Ambrosia. Arizaba, 4000°. July 23. Solanaceae 216 Solanum nigrum - L. Mt. O. 9000°. Aug 5. 217 Solanum prostratum Dun. Mt. O. 9000°. Aug 5. 218 Solanum tuberosum - L. Mt. O. 10,000° Aug 5. 219 Solanum torvum - Swg. (very variable) Near Cordoba, 3,000° Aug 20. 220 Solanum amazonicum - Ker. Cordoba, 3,000° Aug 20 221 Solanum demissum Lindl. Esperanza, 8,000° Aug 14. 222 Solanum elæagnifolium Cav. Arizaba 4000°. July 27. 223 Solanum sp?². Esperanza - Sandy fields. Aug 15. 224 Physalis aequata - Jarg. Esperanza, 8000° Aug 15. 225 Physalis Philadelphia, Lam. var minor! Arizaba, 4000°. Small form at Cordoba, 3000°² 226 Sarrocha jaltonata Schle. Cordoba, 3000°. Aug 21. 227 Datura arborea - L. Arizaba, 4000° July 228 Cestrum sp? (Common) Cordoba, 3000°. Aug 20. 229 Nicotiana - nearest Mexicana Schle. Arizaba, 4000°. July 30. Scrophularineae 230 Penetemon barbatus - Nutt. Grassy hills near Esperanza, 8000°. Aug 14.

231 Penetemon imberbis Jauch. Esperanza, 8000° Aug 14. 232 Penetemon gentianoides Don. Mt. O. 12000° Aug 6. 233 Penetemon perfoliatum Brong. Mt. O. 11000° Aug 5, 234 Mimulus luteus L. Mt. O. along the aqueduct 9000° Aug 4, 235 Mimulus sp. Esperanza 8000° Aug 14 236 Siorthopia pichinchensis NBK. Mt. O. 10,000° Aug. 6. 237 Veronica peregrina L. Wheat fields - near Esperanza Mt. O. 10000°Aug 6, 238 Veronica agrestis L. (A naturalized sp. from the old roads). Wheat fields. Esperanza Aug 15. 239 Buchnera pilosa Benth. Arizaba, 4000° July 31. 240 Castilleia lithospermoides NBK Mt. O. 11,5000°. Aug. 6. 241 Castilleia integrifolia L. Mt. O. 9000° Aug 4, 242 Lamoureuxia cordata Ch. Schl. Esperanza, 8000° Aug 14. & Ariz. 4000°. July 31. 243 Lamoureuxia multifida NBK. Arizaba. Rocky Hills - 4000° - July 31. Orobanaceae 244 Pinquicula caudata Schl. Shady cliffs. Maltrata 5482°, Aug 16 Gesneraceae 245 Aretanthus parviflorus B.W. Mt. O. 10,000° - Aug 6. 5.

5. Bignoniaceae 246 Icoma stans Tuss. var. velutina DC or n var. Mallrata, 5482°, Aug 15, Acanthaceae 247 Calophanes ovata Benth - Fields near Nogales 4202°. 248 Calophanes schiedeana Mies. Hills near Mallrata, 5482°, Aug 15, 249 Calophanes angustifolia Hemsl. Hills near Orizaba, 4000° - July 31. 250 Ruella glandulosa-punctatus . Hills met of Orizaba - 4000° - July 31 Verbenaceae 251 Lantana camara L. Common around Ori- zaba, 4000° - July 25 252 Lantana hirsuta Mart &al. Rocky Hills near Orizaba, 4000° July 31. 253 Lantana hispida HBK, Orizaba 4000° July 29, 254 Lippia repens HBK. Reported for the 1st time from Orizaba, July 29. 255 Priva echinata Tuss. Common around Orizaba - July 25. 256 Verbena bipinnatifida Mallrata, 5482°, Aug 15.

267 Verbena ciliata Beuth - Orixaba - July 23 268 Verbena tenuifolia M. Vg. Mt. O. 9000° Aug 9 269 Verbena n. sp.? Sandy hills near Esper- anza - 8000°, Aug 14. 270 Jamonea scabra Ch & Schl. Along streams. Cordoba, 3000°, Aug 20. 271 Citharexylum reticulatum - N.B K. Orixaba July near a swelling - 4000° Aug 29. Labiatæ 272 Ocimum carnosum L. & O. Orixaba - 4000°, July 273 Hyptis stellulata Beuth - Orixaba - 4000° July 274 Hyptis spirata Pois - Orixaba 4000°, July 25. 275 Micromeria brownii Beuth - Roadides near Cordoba, 3000° - Aug 21. 276 Lepechinia spicata Hills - Mt. O. 9000° - Aug 8. 277 Salvia angustifolia Cav. Mt. O. 9000°, Aug 8. 278 Salvia grahamii Beuth - Mt. O. 9000, Aug 8. 279 Salvia peters Cav. Malt rata 5452° Aug 15 280 Salvia tillae folia Vahl. Orixaba, 4000 July 25. 281 Salvia ballotae flora Beuth - Maltrata, Aug 15. 282 Salvia amarissima Ort. San Esperanza, 8000° Aug 14. 283 Salvia elegans Vahl. Mt. O. 10000° Aug 15 284 Salvia haptoides M.Vg. Near Cordoba, 3000° Aug 20.

7. 285 Cedronella Mexicana - Beuth. Mt. Oriz. In Ravines - 10,000 - Aug 8. 286 Brunella vulgaris - L. Hills near Matlata, 5482° - Aug 16. 287 Marrubium vulgare - L. Mt. O. - 10,000° Aug 8. 288 Stachys Scutellaria caerulea - Moe. r Sesse. Hills near Orizaba, 4000°, July 31. 289 Stachys agerina - Ch. r Schl. Orizaba-Tlcpw. 290 Stachys coccinea - Daeg. Rocky hill near Orizaba - 4000° - July 31. 291 Stachys drummondii Beuth - Orizaba Aug 24. 292 Stachys jepsenii - M. & G. Peak of O, 10,000 Aug 5. 293 Stachys -(S 4. Seminae of X II Sec - Cephalophis) 294 Teucrium inflatum - Snyg. Near Orizaba 4000° July 27. Plantagineae 295 Plantago major - L. Common in wet places - Orizaba - 4000° July 29 296 Plantago Virginica - L. Orizaba - July 29. Plantago X orullensis - H.B.K. Peak of Orizaba - 11,000° Aug 6. Nyctagineae 297 Oxybaphus microsus L'Hér. Sandy plains near Esperanza - 8000 - Aug 14.

Amarantaceae 598 Amaranthus blitum - L. Very Common in Orizaba 4000° July 23. 599 Gomphrena decumbens - Jacq. Hills near Maltrata 4582° Aug 15- 600 Gomphrena globosa - L. Orizaba July 27 601 Iresine gracilis - M. V.G. Orizaba July 25 602 Iresine Hookeri - Moq. Orizaba July 23. Chenopodiaceae 608 Chenopodium inisum - Pois Peak of Orizaba. 10,000° Aug 6. 609 Chenopodium fortidum - Schrad - Peak of O. 10,000° Aug 6. Phytolaccaceae 606 Phytolacca orbandra - L. Nogales 4302° Aug 13. Polygonaceae 608 Polygonum glabrum - Willd - Orizaba July 25 609 Polygonum hydropiperoides - Mx, Orizaba July 27 608 Polygonum nodulum Pers. Orizaba - July 23 609 Polygonum segelum - N.B/K Near Cordoba 3000° Aug 20 610 Rumex crispus L. var. Mexicanas M.V.G. Peak of Orizaba - 9,000° - Aug 4. 611 Rumex sp? Esperanza, 850°. Aug 15.

3/1 Rumex sp.? Esperanza, 8000°. Aug 15. Piperaceae 3/2 Piper aduncum L.² Orizaba, 4000°. July 30. Euphorbiaceae 3/3 Euphorbia graminea - Jacq. Orizaba - 4000°. July 29. 3/4 Euphorbia Preslii - Gess. Orizaba - July 26, 3/5 Euphorbia sp² Mt. O. 10,000°. Aug 6. 3/6 Euphorbia sp~ Cordoba, 3000°, Aug 20 3/7 Phyllanthus lathyroides - KBR. var genuinus Müell - Orizaba, 4000°. July 30. 3/8 Croton Neo-mexicana - Müell - Mt. O. 9000 Aug 4. 3/19 Croton glabellus - Linn - Near Cordoba 3/20 Argylhamnia sp². (Dig.) 3000° Aug 20. 3/21 Acalypha macrostachya - Jacq. Cordoba, 3000°. Aug 20. 3/22 Acalypha sp² Esperanza, 8000° Aug 14. 3/23 Acalypha sp² Orizaba, 4000° July 23. 3/24 Ricinus communis - L. Common in Orizaba, 4000°. July 23. Urticaceae 3/25 Urtica flabellata - KBR. Orizaba, 4000°, July 29.

Copiiferae 326 Quercus incignis - Mt. 0. MT. O. 9-10,000° Augt. 327 Quercus florosa - Lieb? Mt.O. 9/1000° Augt. Salicineae 328 Salix - n sp.? Maltrata 5482°-Augt 16. Coniferae 329 Pinus sp. Mt.O. 10,000-14,000° Augt.7. 330 Abies religiosa Cham vSchle. Mt.O. 12,000°. Augt. Iridaceae 331 Nemastyris tenuis - Bench Rocky Hill, Orizaba 4,000° July 31. 332 Sisyrinchium arquetifolium - Mill. Orizaba. 4,000°. July 29. 333 Sisyrinchium hartwegi Bak? Orizaba. July 26 334 Sisyrinchium scabrum. Ch.Schle? Mt. Oriz. 9000°, Augt 9. 335 Sisyrinchium tinctorium HBK. Esperanza- Nordes Hills. 8,000°-Augt 15. Amaryllideae 336 Hymenocallis sp? Orizaba 3,000° Aug 20.

8. 337 Bomarea sp. Arizaba 4000° July 31 338 Bomarea sp. Arizaba 4000° July 25 Liliaceae 339 Smilax sp. Cordoba, 3000° Aug 20 340 Smilax sp. Cordoba, 3000° Aug 20 341 Yucca sp. Esperanza, 8000° Aug 15 342 Yucca sp. Esperanza, 8000° Aug 15 343 Anthericum Torreyi Bak. First time re. posted from S. Mex. Esperanza/8000° Aug 14 344 Echeandia terniflora - Och. Very Common, Arizaba, Cds. Nogales. 345 Allium n.sp. Mt. O. 10000° Aug 6. 346 Stenanthium frigidum Kunth - Peak of Arizaba, 12000° Aug 6. 347 Tygadenus? Arizaba - 4000° Aug 13. Commelinaceae 348 Commelina dianthifolia DC. Peak of Ariza ba - 11500° Aug 6. 349 Commelina virginica B. Common around Arizaba, 4000° July 23. 350 Indescantia cumanensis - Kunth - Cordoba, 4000° July 23. 351 Indecantia sp. Arizaba, 4000° July 29 352 Indecantia sp. Arizaba 4000 July 31

363 Indecantia, sp Cordoba, 3,000° Aug 20 364 Indecantia sp Esperanza, 8,000° Aug 15. Scitamineae 355 Canna sp Cordoba, 3000, Aug 20 356 Canna sp Cordoba. 3000 Aug 21 Cyperaceae 357 Cyperus sp Arizaba, 4,000° July 31 358 Cyperus sp " " " " 359 Cyperus sp " " " 29 360 Cyperus sp " " " 27 361, Cyperus sp " " " " 362 Cyperus sp City of Mexico, 7,000° July 20 363 Cyperus sp Peak of Arizaba, 9,000° Aug8 364 Cyperus sp Arizaba, 4,000° Aug 13 365 Scirpus sp Cordoba, 3,000° Aug 21. 366 Rhynchospora sp Cordoba, 3,000° Aug 20. Gramineae 367 Paniculum sp Arizaba, 4,000° July 29 368 Paniculum sp " " " " 369 Paniculum sp " " " 31. 370 Panicum sp " " " 29 371 Panicum sp Cordoba, 3,000° Aug 20

372 Panicum sp. Esperanza, 8,000° Aug 14. 373 Panicum sp. City of Mex., 7,000° July 20 374 Panicum sp. Cordoba, 3,000° Aug 20 375 Panicum sp. Peak of Orizaba, 10,000° Aug 6 376 Panicum sp. Peak of Orizaba 9,000° Aug 9. 377 Setaria sp. Orizaba, 4,000° July 31 378 Setaria sp. City of Mex., 7,000° July 20 379 Setaria sp. Peak of Oriz. 9,000° Aug 8. 380 Setaria sp. Peak of Oriz. 10,000° Aug 6 381 Cenchrus sp. Orizaba, 4,000°. July 27. 382 Erianthus saccharoides. Mex. Orizaba 4,000 July 31 383 Andropogon sp. Nogales, 4,500°, Aug 13. 384 Andropogon sp. Orizaba, 4,000° July 31 385 Andropogon sp. Orizaba, 4,000° July 31 386 Aristida sp. Esperanza, 8,000° Aug 14 387 Aristida sp. Peak of O. 11,000° Aug 5. 388 Aristida sp. Peak of O. 10,000 Aug 5. 389 Stipa sp. Cordoba, 3,000° Aug 20 390 Muhlenbergia sp. Peak of O., 9,000° Aug 8 391 Muhlenbergia sp. Cordoba, 3,000. Aug 21 392 Muhlenbergia sp. City of Mex. 7,000° July 20 393 Sporobolus sp. Orizaba, 4,000° Aug 18 394 Agrostis sp. Peak of O. 13,000°. Aug 6. 395 Agrostis sp. Peak of O. 12,000° Aug 6 396 Agrostis sp. Peak of O. 9,000 Aug 9, 397 Pisetum sp. Peak of O. 13,000 Aug 7 398 Bouteloua sp. Orizaba, 4,000° July 31 399 Bouteloua sp. Peak of O. 9,000°. Aug 8,

408 Eleusine sp. Common in Orizaba, 4,000° July 27 409 Eragrostis sp. Esperanza, 8,000° Aug 14. 410 Eragrostis sp. Peak of O. 9,000° Aug 9. 411 Poa sp. Peak of O. 9,000° Aug 8. 412 Festuca sp. Peak of O. 14,000° Aug 7. 413 Festuca sp. Peak of O. 13,000° Aug 7. 414 Festuca sp. Peak at O. 10,000° Aug 6. 415 Clymenus sp. City of M. 1,000° July 20 416 Bromus sp. Peak of O. 10,000° Aug 6. Filices 417 Cyather mexicana - Ch. vSche. Met ravines Orizaba - 4,000° Aug 26. 418 Moodisia mexicana - Fee. (Nemo includes it under M. mollis T.Sm.) Peak of O. 9,000° Aug 8. 419 Cystopteris fragilis - Bernk. Peak of O. 10,000° Aug 8. 420 Adiantum conicum - HBK. Orizaba, 4,000° July 25. 421 Adiantum tetraphyllum. Milled - Ravines near Cordoba, 3,000° Aug 20. 422 Adiantum (near convolutum Jauru). Orizaba, 4,000°. July 31. 423 Hypolepis repens - Prsel. Orizaba, 4,000° July 27 424 Cheilanthes Alabamensis Fee (Included under microphylla by Nemo) Orizaba, 4,000° July 31. 425 Cheilanthes fendleri Hook. Peak of Orizaba 9,000° Aug 6.

9 418 Cheilanthes microphylla Swz. Common on hills near Orizaba 4,000° July 31. 419 Learea cordifolia Lag. Near Maltrata. 5482°. Aug 16 420 Pellaea flexuosa Linné - Orizaba - 4,000° Aug 13 421 Pellaea - (Belvisia angustifolia Bak & Perk lyæ, Bak.) Nogales - Aug 13 422 Pellaea - Kearneth glauca T.Sm. (which seems. 9,000 includes under marginata Bak) Peak of O., Aug 8 423 Pellaea N.S.P² Orizaba - 4,000° July 26 [geraniaceae] (Keor marginata Bak) 424 Pellaea marginata B. var. pyramidalis B. Orizaba - 4,000° July 31. 425 Pellaea intramarginalis T.Sm. Maltrata 5482° - Aug 15. 426 Pteris aquilina L. Orizaba 4,000 Aug 13. 427 Pteris longifolia L. Orizaba 4,000 Aug 13. 428 Pellaea rigida NB. Orizaba 4,000. Aug 13. 429 Pellaea ternifolia L. Peak of O. 9,000° Aug 5. 430 Blechnum occidentale - L. Orizaba 4,000° July 27. 431 Asplenium - (near cultifolium L - wh is not reported p. Mex) Cordoba, 3,000° Aug 20 432 Asplenium firmum Kunze. Cordoba. Aug 20 433 Asplenium fragrans Swz. Cordoba 4,000°. Aug 20 434 Asplenium montanum L. Peak of Oriz. 10,000° - Aug 6. 435 Asplenium trichomanes L. Peak of Orizaba 14,000° Aug 7.

436 Asplenium Shepherdii Spreug. Cordoba, 3,000° Aug 20 437 Aspidium patens Swz. Orizaba - 4,000° Aug 13. 438 Aspidium trifoliatum Swz. Orizaba 4,000° Aug 13. 439 Nephrolepis exaltata Schott. Orizaba 4,000° July 27. 440 Polypodium angustifolium Swz. Orizaba 4,000 A.B. 441 Polypodium furpuraceum Schl. Common on roofs of houses - Orizaba - 4,000° July 23. 442 443 Polypodium glaucophyllum Kze... Cordoba Cultivated. 3,000° Aug 21. 444 Polypodium lanceolatum L. Peak of Orizaba Growing on trees - 11,500° Aug 6. 445 Polypodium lycopodioides L. Cordoba 3,000° Aug 21 446 Polypodium pectinatum L. Cordoba 3,000° Aug 21 447 Polypodium phyllitidis L. Cordoba 3,000° Aug 21 448 Polypodium pulchrum Mr.S. Orizaba 4,000° July 449 Polypodium thysanolepis AlBr. Orizaba 450 Phegopt 4,000° July 25. 451 Phegopteris rudis Mett. Orizaba 4,000° July 27. 452 Phegopteris tetragonum Swz. Cordoba 3,000° Aug 20 453 Phegopteris sp² Cordoba 3,000° Aug 20 454 Notholaena ferruginea KK. Orizaba 4,000° July 31 455 Notholaena sinuata Kaempf. Ariz. 4,000° July 31. 456 Gymnogramme calomelanos Kaempf? (Fronds too large) Orizaba - 4,000°. Aug 13. 457 Gymnogramme podophylla Journ. (Included by Hems. under ibenberqiana Nogales- 4202° Aug 13

Equisetaceae. 458 Equisetum robustum - A.B. Along streams near Nogales - 4302° Aug 13. Selaginellaceae 459 Selaginella cuspidata Sprig. Orixaba- 46 4000° Aug 13. 460 Selaginella reptans Spr. Cordoba 3000° Aug 20 461 Selaginella sp. Cordoba 3000° Aug 20. ~~~ Peak of Orixaba 13000° Aug 7. The following list is added, 462 Ranunculus Hookeri Schl. Orixaba, PK 4000° July 23 463 Arenaria byoides MIELD. Peak of O. 13000° Aug 7. 464 Helianthus Moctus L. (Cultivated) Cordoba, 3000° Aug 21. 465 Walteria Americana - L. Along the rail road Nogales - Aug 4. 666 Hiraes macroptera St. Orixaba 4000° July 30. 467 Rhyuchoea longiacemosa M.G. Peak of O. 9000° Aug 8 467 Indigofera excelsa M.G. Peak of O. 9000° Aug 8. 468 Trifolium sp. Orixaba - 4000° July 29 469 Lespedeza Orixaba, 4000- Aug 24 470 Cassia sp Peak of O. 9000° Aug 8. 471 Mimosa andheimeri Gay. Maltrata - 5482 Aug 16

472 Desmodium pilosum Gay. Peak of O. 9000° Aug8. 473 Orothera sp — Peak of O. 9000 Aug8 474 Linum mexicanum HBK. Orizaba. 4000° July 31 475 Erigeron micranthus DC - Orizaba, 4000°. July 29. 476 Erigeron Scaposus DC. Orizaba- 4,000° July 29 477 Erigeron moyanus Otts. Orizaba, 4000° - July 31. 478 Erigeron delphinfolius Meed'. Peak of Orizaba. 9000° Aug8 479 Erigeron Congipes DC - Kar Maltrata. 480 Baccharis thexoides 5482° - Aug 16. HBK - Orizaba - 4000°4) City of M. 1000° 481 Aster divaricatus Kutt. Orizaba- 4000°. July 29 482 Gnaphalium leptophyllum DC. Peak of O. 14000° Aug7. 483 Sanvitalia procumbens Lam - Peak of Oriz. 9000° Aug8. 484 Peupmenium discolor Schrad - Orizaba, 4000° July 31. 485 Verbenia miraeophala Benth. Orizaba - 4000° July 31 486 Splanthes beernburga DC. Cordoba, 3000° Aug20 487 Coreopsis liebmanii Schr² Mt. O. 9000Aug8 488 Bidens heterophylla Art. Common in Orizaba 4000° - Aug 23. 489 Iridax trilobata Kems. Peak of Ariza- ba, 9000° Aug8.

10. 490 Carthenium tomentosum DC. Peak of Orizaba - 9,000° Aug 8. 491 Helenium Mexicanum NBK - Esperanza, 9,000° - Aug 14. 492 Erechites uncinata DC. Orizaba 4,000° July 30 493 Senecio helodes Benth - Peak of Orizaba. 13,000° - Aug 7 494 Senecio multidentatus Schz. Peak of Orizaba 12,000° - Aug 7. 495 Senecio sp². Peak of Orizaba - 14,000°. Aug 7. 496 Cnicus nivalis NBK. Peak of Orizaba 12,000° - Aug 7. 497 Cnicus puberiscens Hemley.² Peak of Orizaba - 12,000° Aug 7. 498 Hieracium n. sp. Near Gonovic and Nicolopoppum. 499. Hieracium mexicanum Less.. Peak of Orizaba - 10,000° Aug 5. 18 Plants unclassified 517 The collection consists of 68 Families. 154 Genera and 517 Species distributed as follows_ Families Genera Species Phanerogams 65 137 465 Pteridophytes 3 17 52 Total 68 Fam. 154 Gen. 517 Sp.

Seaton, H. E.