10 BOTANY. 



Medicago DiasTicULATA, Willd.; Torr. & Gray, I. c. With the last, and also a naturalized 

 plant. 



HosACKiA PUBERULA, Benth. PI. Hartiv. p. 305; Gi-ay PI. Wright, 1, p. 50. Chiricahui 

 mountains, New Mexico ; August. — (Tab. IV.) 



HosACKiA cYTisoiDES, Btntli.; Torr. ck Gray, Fl. 1, p. 324. Salinas valley, California ; 

 November. Foliage only. 



HosACKiA scoPAKiA, Beittli.; Torr. & Gray, Fl. 1. p. 325. Kikal Mungo and Warner's 

 ranch ; March to May. 



HosACKiA STRIGOSA, Nutt. in Torr. & Gray, Fl. 1,p. 326. San Gabriel and Los Angeles; 

 March. 



Astragalus (Phaca) densifolia. Phaca densifolia, J. E. Smith ; Torr. & Gray, Fl. 1, p. 

 344 and 693; HooTc, Ic. t. 2 and 3. P. Nuttallii, Torr. & Gray, I. c. San Gabriel and San 

 Bernardino; March. 



HoMALOBUS MULTIFLORUS, Nidt. in Torr. & Gray, Fl. 1, p. 350. Santa Inez. January, 

 flower and young fruit. This agrees very well with Nuttall's specimens, but better with Phaca 

 nigrescens. Hook., which we refer to H. multiflora. 



LuPiNUS HiRSUTissiMTJS Benth. J Torr. & Gray, Fl. 1, p. 372. San Gabriel and Santa Clara 

 valley ; February and March. 



LupiNUS ORNATUS, Doufjl.; Torr. & Gray, Fl. 1, p. 380. San Juan, California; November. 

 A fine shrubby species, well deserving a place in the flower garden. 



HoFFMANSEGGiA STRiCTA, Benth. in Gray, PI. Wright, \, p. 56. Ojo de Vaca ; August. 



Cassia Lindheimeriana, Scheele; Gray, PI. Lindheim. 2, pi. 179. San Pedro and Burro 

 mountains, New Mexico ; July and August. In all the specimens the leaves have but three 

 pairs of leaflets, and they are smaller than in the ordinary form of the plant. 



Olneya Tesota, Gray, PI. Thurb. p. 328. On diluvial hills of the Colorado river, near Fort 

 Yuma ; March. This, according to Mr. Thuber, is the Tesota of the Mexicans, but Mr. Schott 

 informs us that its more common name is Arhol de hierro, and that the Acacia Greggii is the 

 true Tesota. There is, however, but little dependence to be jilaced on the common names of 

 plants, especially among rude and ignorant people. — (Tab. V.) 



Acacia Greggii, Gray, PI. Wright, 1, p. 65. Vallecitas, west of the Colorado; May, in 

 flower ; Burro mountains ; August^ in fruit. 



Acacia constricta, Benth. in Gray, PI. Wright, I. c. On the San Pedro^ a tributary of the 

 Gila ; July. 



Acacia cuspidata, Schlecht.; Gray, PI. Wright, 1, ^j. 66. San Pedro river, and Chiricahui 

 mountains ; July. 



Strombocarpa pubescens, Gray, PI. Wright, 1, pi. 60. Prosopis (Strombocarpa) pubescens, 

 Benth. P. (Strombocarpa) Emoryi, Torr. in Emory's Eep. p. 139. P. odorata, Torr. in Frem. 

 2d Eeport,p. 313 (the fruit only.) Common along the Gila and about San Felipe, &c., Cali- 

 fornia. This is the Screiohean or Screiv 3Iesquite. The Sonora Mexicans call it TorniUo. The 

 figure in Fremont's second report is made up of the foliage and flowers of Algarobia glandulosa 

 and the fruit of Strombocarpa ; an error that arose from a mixing of the specimens in the 

 original collections. I have^ therefore, in the botany of Williamson's report, given a new 

 figure of this important tree, the fruit of which yields food to man and beast. 



Algarobia glandulosa, Torr. & Gray, Fl. 1, p. 399. Prosopis glandulosa, Torr. in Ann, 

 Lye. N. Yorlc, 2, p. 192, t. 2. Common along the Gila river. Fine specimens, with pods 9 or 



