Astragalus. LEGUMIN0S2E. 14 9 



16. A. leucopsis, Tnrr. & Gray. Tomentulose-canescent, a foot high : leaflets 

 in many pairs, from broadly oblong to almost linear, half an inch or mure in length: 

 spike-like raceme mostly short (an inch or two long, rarely longer): calyx-teeth 

 more than half the length of the campanulate tube : flower otherwise nearly as 

 in the foregoing : the pod similar, but somewhat tapering at base into a nearly 

 glabrous stipe of half an inch or less in length and only twice or thrice the length 

 of the calyx-tube. — But. Mex. Bound. 56, t. 16. Pliaca canescens, Xutt. P. leu- 

 copsis, Torr. & Gray, Fl. i. 694. 



Dry liills, Santa Barbara to San Diego Co. 



17. A. trichopodus, Gray. Strigulose-puberulent or at first hoary, in age 



almost glabrous : stem slender, a foot to a yard high : leaflets in many pairs, from 

 narrowly oblong to nearly linear, about half an inch long : raceme short : flowers 4 

 or 5 lines long : calyx-teeth very much shorter than the campanulate tube : corolla 

 yellowish white : pod oval, obtuse at both ends, over half an inch in length, but 

 very much smaller and less bladdery than any other of this subdivision ; its stipe 

 only a quarter of an inch long. — Phaca triclwpoda, Xutt. 



Dry hills, common in and near Santa Barbara Co. 



A. amiti.lakii's, AVatson, the only remaining known species of this subdivision, is dwarf, 

 short-peduncled, with rather lew leaflets, violet-purple flowers, extremely short calyx-teeth, and 

 pod ovate with a truncate or abrupt base, on a stipe of its own length. It inhabits S. Utah, but 

 may approach tile borders oi" California. 



+■ +■ Pud sessile in the calyx (not at all stipitate), 



++ Large and very bladdery, over an inch and sometimes two inches long, many- 

 seeded : /"/jiffs mostly in muiiy pairs : spike or raceme many-jiozvered. 



= Stipules (at least the upper ones) herbaceous and rigidly deflexed: corolla appar- 

 ently pale yellow or cream-color, short and broad, incurved : stems 3 to 6 feet 

 Ion,/, straggling or decumbent and bran eh in./. 



18. A. oocarpus, 1 !ray. Glabrous, or young parts minutely pubescent : stems 

 Qexuous and with spreading branches: leaflets from oblong to broadly linear, obtuse 

 (from half to an inch long), bright green and of thickish firm texture : pedum les 



sometimes exc ling the leaves: flowers loose in the raceme, 1 or •"> lines long: 



calyx campanulate ami with very short triangular-subulate teeth : corolla compai 1 

 tively short, with keel much incurved and standard turned hack : pod ovate or 

 <>\al and short pointed, an inch t" an inch and a half long, of paTchnient-like tex- 

 ture : the seed bearing suture somewhat projecting into the cell. — Proc. Am. Acad. 

 vi. 213. .1. Crotalariee, Torr. Bot. Mex. Bound. 56, t. 17. excl. syn. 



Common through the mountains east of San Dii 0, P C ; . Palmer. A strongly 



marked x| les, varying however in the size and shape ol the pod, which in the smaller form is 



ovate, but in the larger is elongated-oval and the walls mere membranaceous. 



= = Stipules scarious or nearly so : leaflets usually crowded in very many pairs: 



peduncles elongated and bearing numerous SOOn deflexed flowers, Ufhtch art usually 



crowded in the raceme: corolla straightish and narrow, fully half an inch long, 

 yellowish-white or white, or some/inns tht tips dusky-purplish. 



19. A. Crotalariee, < iray, 1. c. Glabrous or slightly pubescent, ot the young 

 parts sometimes villous: stems erect or nearly so, 2 or ■"■ feel high, usually stout : 

 leaflets from oblong-linear to obovate-oyal or slightly obcordate, thickish (from a 

 quarter to a full inch long): stipules triangular and distinct: calyx-teeth subulate, 

 about half the length of the short-cam panulate tube: corolla white: pod of rather 

 parchment like texture, but much inflated, ovoid, an inch to an inch and a half in 

 length. Phaca Crotalariee, Benth, I'I. Hartw.l P. densifolia, partly, of authors. 



Var. virgatus, Gray, stipules more subulate: race - virgate and loose, I t.i 



Hi inches long : calj \ teeth subulate si tai eons and Ion 



