R.K.Selander, 1954 59 Mexico City May 28 to the summit. I saw no fires all along the way and the pines were not covered with epiphytes. lamb has camped at Rio Frio but I am not sure of the location of his camp. May 29-30 Mexico City - Hotel Palacios. I had 200 /16 gauge shells & 100 .4/10 shells loaded with dust shot at an Armeria on 16 de Septiembre - about 6 blocks from the Zocalo on left hand side of street - Cost: 360 pesos. Wrote letters to everyone. May 31 Drove to Toluca and then south along highway toward [Roll 25, # 11 - Place where I took specimen of C. joconus] on Junal near camp of May 31. Tenancingo through a broad valley in cultivation which is surrounded by slope of pine and oak. Just before (N) D x Tapan de la Sel (1900m) we crossed several deep arroyos with Arid tropical forest within. S of D x Tapan the land lowers after climbing up to 1670m, at Tonatico. We drove on to see El Mogote, Quenvers where we camped in a thick forest of arid tropical vegetation - in growth form similar to that in Oaxaca but lacking the cacti. There are some short fan palms mixed in with the deciduous trees. The common large-yellow-flowered tree is here along with an Acacia-like tree & several broad-leafe. Most of this vegetation is not thorny, however, and BHA is absent along with the Candelabra x tina