Preliminary Key to the Vascular Plants of the P.O.B.S.P Area KEYS AND DESCRIPTIONS OF VASCULAR PLANTS DIVIDED INTO 5 CATE- GORIES: 1a-1f Herbaceous plants with parallel leaf venation, leaves basal with no leafy stem apparent ………………………………………………… 1a Herbaceous and woody plants with other than parallel venation, leaves basal or more commonly borne along a stem ………………………… 1b Vines- commonly with leaves borne along a stem or leafless ……… 1c Herbaceous plants with other than parallel venation, leaves basal or more commonly borne along a stem, very small flower (florets) compressed into a tight head or cluster 1d Plant palmlike or pampaslike 1e FERNS (1f) or leafless plants with three sided stem 1f 1a A. Plants with basal rosette of leaves, flowers on spike-like inflores- cence, petals 4 …………………………………………… Plantaginaceae Plantago (1) AA. Plants with basal clusters of leaves, florets on spike-like inflores- ence, a grasslike appearance …………………………… B. B. Plants with round, hollow stems, 1/2 phyllotaxy … Gramineae (2-16) BB. Plants with a solid, three sided stem, 1/3 phyllotaxy ……… (17-21) 12. Cyperaceae pleas line plenty of space between letters ie A space AA, Ib A. Leaves alternate in arrangement along the stem …………… B B. Plants herbaceous shrubs or low growing herbs …………… C C. leaves compound ………………………………………… Leguminosae 4 entire simple, entire or lobe Canavalia (22) 31 CC. leaves compound ………………………………………… D. Portulacaceae 31 D. leaves succulent ……………………………… Portulaca oleracea (23) stamens 7-12 ………………………………………………… L. leaves normal, or 6 DD. leaves normal, not obviously succulent …… E. bisexual E. Flowers perfect ………………………………… F. F. Flowers with five petals, yellow … Tiliaceae 36 Triumfetta (24) yellow, red FF. Flowers with five petals, pink or white …………………………………… Solanaceae 33 Nicotiana (25-26) Solanum (27-28) FFF. Flowers with a five lobed tubular corolla, white, stipulate leaves ……… Numa 49 estipulate leaves Hydropyllaceae 18. FFFF. Flowers with no petals, green calyx Boraginaceae stipulate Heliortropium Chenopodiaceae 8 Atriplex (30) F5 Flowers with 4 petals, estipulate, Chenopodium (31-32) single stem. Cruciferae EE. Flowers unisexual ……………………………… G-Stamens 5 Amaranthaceae Amaranthus