BOTANY. 
Sinapis arvensis, Linn. San Buenaventura ranch ; February. Found also by Bev. A. 
Fitch. Probably introduced from Europe. 
Sinapis nigra, Linn. Tulare valley ; February. This also is an introduced species. 
Lepidium nitidem, Nutt, in Torr. & Gray, FI. 1, p. 116. Santa Clara valley; February. 
Lepidium montantjm, Nutt. 1. c. Sauz valley, and Playa de los Pimas ; July. The specimens 
show a decidedly annual root. 
Dithyraea Wislizeni, Engelm. in Wislizen, N. Mex. p. 95 ; Torr. in Sitgreave’s Hep. p. 280, 
t. 2. On the G-ila river ; June, in flower and fruit. Sot observed before so far west. The 
silicles, even when young, are frequently quite smooth; in other respects agreeing with the 
character of the plant given by Dr. Engelmann, who has well contrasted this species with D. 
Californica. 
Wislizenia refracta, Engelm. in Wisliz. N. Mex. p. 99 ; Gray , PI. Wright. 1, p. 11, t. 2. 
On the Gila river. The leaves of these, and of other specimens from the same region, are 
minutely scabrous. 
Isomeris arborea, Nutt, in Torr. & Gray , FI. 1, p. 124 ; Bot. Mag. t. 3842. Santa Clara 
valley and near San Diego ; February—May. This interesting shrub is not found east of the 
coast range. 
Viola pedunculata, Torr. & Gray , FI. 1, p. 141. Santa Clara to Los Angeles; March. 
As stated in Whipple’s Report, this species, V. prsemorsa, Dougl., V. lingusefolia, Nutt., and 
V. Nuttallii, Pursh, should, perhaps, he united. 
Silene Californica, Durand, in Jour. Acad. Philad. (n. ser.) 2, p. 83. S. pulchra, Torr. & 
Gray, FI. 1, p. 6T5, (in part.) . San Diego ; May. 
Talinum aurantiacum, Engelm. in PI. Lindh. 2, p. 54 ; Gray, PI. Wright. 2, p. 20. On San 
Pedro river, tributary of the Gila ; July. 
Talinum aurantiacum, var. angustissimum, Gray, PI. Wright. 1, p. 14, and 2, p. 20. Burro 
mountains ; August. 
Calandrinia Menziesii, Nook. FI. Bor.-Amer. p. 223 t. TO. Los Angeles ; March. 
Claytonia perfoliata, Bonn; Bot. Mag. t. 1336; Torr. & Gray, FI. 1, p. 200 and 676. 
Los Angeles ; March. The typical form of the species. 
Sidalcea MALViEFLORA, Gray , PI. Wright. 1, p. 16. S. Neo-Mexicana, Gray, PI. Fendl. p. 
23. Rio Mimbres ; August. 
Sidalcea humilis, Gray, PI. Fendl. p. 20. Santa Clara to San Diego ; February to April. 
Malvastrum coccineum, Gray, PI. Fendl. p. 24. On the Gila river ; June. 
Sphaeralceaincana, Torr. in Gray, PI. Fendl. p. 23; Gray, PI. Wright. 1, p. 21. With the last. 
Sphaeralcea incana, var. dissecta, Gray, l. c. Chiricahui mountains. 
Sphaeralcea angustifolia, Spach, var. foliis lanceolatis inferiorihus nunc hastato-suhtrilohatis, 
Gray, PI. Wright. 2, p. 21. San Pedro of the Gila ; July. 
Sphaeralcea Fendleri, Gray, PI. Wright. 1, p. 21. On the Gila river ; July. 
Hibiscus denudatus, Benth. var. involucellatus, Gray, PI. Wright. 1, p. 22. Puerto del 
Dado ; July. 
Erodium cicutarium, Herit.; Torr. & Gray, FI. 1, p. 208. Tulare valley and Kikal 
Mungo ; March. 
Erodium moschatum, Willd.; DC. Prodr. 1, p. 647. Los Angeles ; March. Probably intro¬ 
duced from Europe ; hut De Candolle states that it grows in Peru. 
Linum perenne, Linn.; Torr. & Gray, FI. 1 , p. 204. Valley of Los Playas, Hew Mexico ; 
August. 
