BOTANY. 
9 
Oxalis strict a, Linn.; Torr. FI. New York, 1, p. 123. San Luis Obispo and Salinas valley ; 
December. 
Larrea Mexican a, Moricand; Torr. in Emory’s Rep. p. 138, t. 3 ; Gray, Gen. III. 2 p. 119, t. 
147. Cook’s well, west of the Colorado, and from thence east to the Rio Grande. May, in 
flower and fruit. 
Ceanothus divaricatus, Nutt, in Torr. & Gray, FI. 1, p. 266. San Diego ; May, in flower. 
Ceanothus spinosus, Nutt. 1. c. Santa Inez ; February, in flower. The specimens are 
scarcely at all spiny. 
Frangula Californica, var. tomentella, Gray, PI. Wright, 2, p. 28. Rhamnus tomentellus, 
Benth. PI. Hartw. Puerto del Dado; in fruit. 
Janusia gracilis, Gray, PI. Wright, 1, p. 37 and 2, p. 30. Burro mountains, Hew Mexico; 
August, in flower. By the aid of excellent fruiting specimens, from Dr. Bigelow’s collections, 
we are able to give a good figure of this plant.—(Tab. I.) 
Rhus trilobata, Nutt, in Torr. & Gray, FI. 1 , p. 219. Puerto del Dado. July, in fruit. 
Styphonia integrifolia, Nutt, in Torr. & Gray, FI. 1, p. 220 ; Nutt. Sylv. 3, p. 4, t. 82. 
S. serrata, Nutt. 1. c. Santa Barbara and Santa Inez. August, in fruit. Both entire and 
serrate leaves occur on the same specimens.—(Tab. II.) 
Vitis .estivalis, Michx.; Torr. & Gray, FI. 1, p. 244? On the Mimbres. The specimens 
are without flowers or fruit. The leaves are smaller and less deeply toothed than in the plant 
of the northern States. 
Ampelopsis quinquefolia, Michx.; Torr. & Gray, FI. 1, p. 245. With the last; also in 
fruit. August. 
Polygala cucullata, Benth. PI. Hartw. p. 299, No. 1661; Torr. & Gray, in Emory’s 
Report, ined. tab. —. P. cornuta, Kellogg, in Proceed. Calif. Acad. N. Sc. 1, p. 62. San 
Buenaventura ranch ; February. 
Krameria lanceolata, Torr. in Ann. Lyc. Nat. Hist. N. York, 2, p. 168, Gray, Gen. III. 2, 
t. 185 and 186. Sauz valley ; August, in flower. 
Krameria canescens, Gray, PI. Wright, 1 , p. 42. Desert west of the' Colorado; May, flower 
and fruit. 
Lathyrus venosus, Muhl.; Torr. & Gray, FI. 1 ,p. 274. "Cajon Pass, March. 
Lathyrus vestitus, Nutt, in Torr. & Gray, FI. 1, p. 276. San Gabriel and Santa Inez; 
January and February. 
Vicia Oregana, Nutt, in Torr. & Gray, FI. 1. c. V. truncata, Nutt. 1. c. San Juan, 
California; November. 
Dalea spinosa, Gray; PI. Tliurb. p. 315. Cariso creek, and on the Colorado river; June. 
In favorable situations this remarkable species attains the height of 12 or 15 feet. The trunk 
is sometimes 4 inches in diameter, and the wood is hard and close-grained. The specimens are 
in full flower, a state in which we have rarely received the plant. The leaves are very 
deciduous.—(Tab. III.) 
Amorpha fruticosa, Linn.; Torr. & Gray, FI. 1, p. 304. San Pedro of the Rio Gila; 
July, flowers and young fruit. A very glabrous form of the plant, with scattered glands on 
the under side only. Calyx with short obtuse teeth. 
Melilotus parviflorus, Desf.; Torr. &Gray, FI. 1 ,p. 321. Los Angeles; March. Prob¬ 
ably introduced from Europe. 
