LEGUMINOS^. 9 



northeastern species, coming within our limits in the mountain counties 

 of Nevada, Bolander, and Sierra, Leinrnun. 



11. A. Whitaeyi, Gray, Proc. Am. Acad. vi. 526 (1865). Near the last 

 but more pubescent ; fl. red-purple ; pod smaller, oval, narrowed to a 

 slender stipe which is longer, about twice the length of the calyx. — Col- 

 lected at Sonora Pass, B reiver. 



12. A. oxyphysus, Gray, 1. c. 218 (1864). Erect, 2—3 ft. high, stoutish. 

 canesceut with a minute pubescence ; leaflets 9—21, oblong, 1 in. long ; 

 peduncles exceeding the leaves, raceme elongated : calyx-teeth subulate, 

 half as long as the oblong tube : corolla green ish-white, % in. long : pod 

 compressed, oblique (semiobovate), acuminate at both ends, 1}^ in. long, 

 on a stipe little exceeding the ca lyx. — Dry hills of the Mt. Diablo Eange, 

 at Arroyo del Puerto, Brever, and in San Luis Obispo Co., Lenimon. 



13. A. curtipes, Gray, 1. c. Suffrutescent, the branches erect, 1 ft. 

 high or more, cinereous-pubescent : leaflets 13 — 33, narrowly oblong, 

 obtuse or refuse, ig — '^4 io- long : peduncles long, raceme short : calyx- 

 teeth setaceous-subulate, little longer than the eampanulate tube : pod 

 not compressed, semiovate, acute, \K^ in. long, pendulous on a short rigid 

 stipe. —From San Luis Obispo southward, on dry hills. 



14. A. leucophyllus, T. & G. Fl. i. 336 (1838). Erect, tall, growing 

 parts silvery-canescent, when older glabrate : leaflets 27 — 37, broadly 

 linear, acutish, ^4 in. long : peduncles long, racemes short : calyx-teeth 

 subulate, half as long as the oblong tube ; corolla yellowish : pod 

 obliquely oval, l^^ in. long, on a filiform pubescent stipe nearly as 

 long. — Low hills skirting the interior valley from Sacramento southward 

 to Monterey ; very common between Livermore and Niles, and probably 

 throughout the Mt. Diablo range southward. 



15. A. leucopsis, Torr. Bot. Mex. Bound. 56. t. 16 (18-59) ; T. & G. Fl. 



i. 694 (184U) under Phaca. Size, habit, foliage, inflorescence, etc., as in 

 the last, but calyx-teeth of more than half the length of the tube, which 

 is eampanulate : pod tapering at base, the stipe glabrous and only I3 

 in. long. — The common Rattle- Weed in San Diego Co. It is credited to 

 Santa Barbara Co. and is very likely to be found somewhat farther 

 northward. 



16. A. tricliopodus, Gray, Proc. Am. Acad. vi. 218 (1864) ; Nutt. in 

 T. & G. Fl. i. 344 (1838), under Phaca. Slender, 1—3 feet high, young 

 parts hoary, the older strigose-pul:)ertilent : leaflets very many, oblong to 

 linear, 1,2 in. long : racemes short, on peduncles exceeding the leaves : 

 calyx -teeth much shorter than the campaniilate tube : fl. yellowish : pod 

 oval, obtuse at both ends, ^o in. long, on a short filiform stipe. — Also of 

 southern California, but perhaps in San Luis Obispo Co. 



