14 LEGUMINOS^. 



acuminate to lanceolate, persistent : spikes merely oblong, 1 to IVg in. 

 long, on peduncles of 1 in.: pod bur-like. — Common in orchards and 

 fields about Vacaville, Jepson, where it is a troublesome weed; also at 

 Stockton, Sail ford, and southward in the Mt. Diablo Range to Corral 

 Hollow, Bremer. The species varies greatly in the degree of its hairiness 

 and viscosity, but it is never lepidote. The absence of all scurfiness, the 

 always short and short-stalked spikes, and above all, the thoroughly per- 

 sistent stipules which, upon the lowest parts of the plant are even partly 

 adnate to the petiole, render it impossible to merge the species in (j. 

 lepidota as a variety. 



6. AMORPHA, Liimivus. Shrubs with unequally pinnate leaves 

 which, with the young twigs and inflorescence, are pellucid-glandular 

 and heavy-scented, the glands in age dark brown and opaque. Leaflets 

 many ; stipules and stipels caducous. Flowers very small, dark purple, 

 in long and narrow terminal spikes. Calyx obconic-campanulate, 5- 

 toothed, persistent. Banner (the only petal present) erect, concave, nn- 

 guiculate. Stamens monadelphous at the very base. Pod short, limulate, 

 glandular, scarcely dehiscent, 1- or 2-seeded. 



1. A. Califoriiica, Nutt. in T. & G. Fl. i. 306 (1838). Three to eight 

 ft. high, the nascent parts villous-canescent : leaflets 11 — 15, elliptic 

 oblong, obtuse, an inch long : calyx-teeth acute, but broadly triangular 

 and very short (broader than long). — Santa Barbara, N'n'tall, and doubt- 

 less farther northward, though perhaps not within our limits. 



2. A. hispidula. Two to four ft. high, pubescent or glabrous, the 

 glandular dots supplemented on the twigs, stalklets and leaf-rachis by 

 aciite ijrickle-like glands with tips more or less recurved : leaflets 17 to 25, 

 oval to linear-oblong, an inch long, refuse or emarginate : calyx-teeth 

 triangular-lanceolate, more than half the length of the tube : petal red- 

 purple : pod half obcordate, very glandular, twice the length of the 

 calyx. — Frequent from Monterey Co., Hickman, to Marin and Napa. 

 Confused with A. Californica, by Brewer & Watson, though entirely 

 distinct. The prickle-like glands, interspersed among the depressed and 

 sessile ones, are very characteristic ; nor are the elongated calyx-teeth 

 less so. 



7. ROBINIA, Linnieus (Locust-Tree). Trees or shrubs with odd- 

 pinnate leaves and stout prickles in place of stipules ; the leaflets 

 prickly-stipellate. Flowers showy, in pendulous racemes. Calyx slightly 

 bilabiate, 5-toothed. Banner large, roundish, reflexed, little longer than 

 the wings and keel. Stamens diadelphous. Pod linear, flat, several- 

 seeded, margined along the upper suture, readily dehiscent. 



1. R. PsEUBACACiA, Liuu. Sp. PI. ii. 722 (1753). Tree with large loose 



