292 leguminosjE. 



leaflets 21 to 31, narrowly oblong or linear, 6 to 10 lines long; raceme 

 densely flowered and long-peduncled; flowers 6 to 8 lines long; 

 calyx-teeth subulate, about J the length of the oblong tube; corolla 

 yellowish white; pod obliquely oval, thin, IJ- to IJ in. long, on a 

 filiform pubescent stipe of almost equal length. 



Low dry hills: western side of the Lower Sacramento Valley; Mt. 

 Diablo Range from Livermore Pass westward to Niles Canon. 



6. A. oxyphysus Gray. Habit of the preceding; growing parts 

 canescent, becoming green but not glabrous; leaflets 9 to 21, oblong, 

 IJ in. long or less, the lower as much as 5 lines wide; penduncle 

 much exceeding the leaves, bearing an elongated densely flowered 

 raceme; corolla greenish white, 8 lines long; pod IJ in. long, olavate- 

 obovate, oblique, acuminate at apex, strongly contracted at base into 

 the recurved stipe which exceeds the calyx. 



Dry hills of the Mt. Diablo Range; first collected near Arroyo del 

 Puerto, western Stanislaus Co., by Brewer, no. 1259. 



7. A. Crotalariae (Benth.) Gray. Glabrous, except the pubes- 

 cent growing parts; stems stout, decumbent; leaflets 21 to 35, linear- 

 oblong to broadly obovate, retuse or obtuse, thickish, 5 to 12 lines 

 long; stipules triangular-subulate, distinct; racemes 4 to 10 in. long; 

 calyx-teeth broadly subulate, one-half bs long as the short-campanulate 

 tube; corolla white, 6 lines long; pod almost papery, much inflated, 

 ovoid, 1 to IJ in. in length. 



San Francisco to Southern California. May. 



8. A. Menziesii Gray. Plant stout, erect, 2 to 4 ft. high; young 

 herbage whitish pubescent, soon green, but hirsute-pubescent; leaflets 

 21 to 43, commonly crowded on the rachis, broadly oblong, less 

 frequently cuneate-obovate or narrowly ovate, usually retuse at apex, 

 5 to 8 lines long; stipules broad, not pointed, all but the uppermost 

 continued around the stem and nearly meeting or even united on the 

 side opposite the leaf; corolla 4 to 6 lines long, yellowish white or 

 greenish, the keel purple-tipped; raceme short and dense (IJ in. long), 

 or longer and loose; peduncles 3 to 6 in. long; pod thin-walled, 1 to 

 2 in. long, otherwise similar to the preceding. 



Sandy soils near the coast: San Francisco and Alameda to Monterey 

 and southward. June-Aug. 



9. A. Douglasii (T. & G.) Gray. Herbage cinereous when 

 young, almost glabrous in age; stems ascending, 1 ft. high; leaflets 

 numerous, linear to oblong, 4 to 9 lines long; stipules mostly subu- 

 late; peduncle shorter than the leaves, bearing a dense 10 to 20- 

 flowered raceme; calyx-teeth subulate, shorter than the campanulate 

 tube; corolla scarcely twice the length of the calyx, 4 lines long, 

 yellow or creamish; pod thin-walled, obliquely ovoid, IJ to 2 in. long. 



Gravelly 'stream-beds: San Benito River and southward in the 

 Coast Ranges. 



10. A. pycnostachys Gray. Herbage more or less villous-hoary; 

 stems stoutish, 1 or 2 ft. high; leaflets numerous (about 18 or 19 pairs), 

 linear to oblong; flowers numerous in a dense oblong or cylindrical 



