LEGUMINOSiE. 17 



and variable in size, habit, pubescence, etc. Flowering, in some localities 

 from May nntil December, i. e., throughout the dry season; in this 

 regard, as well as in general aspect, very unlike the other annual species. 

 * * Siipnles gland-like ; leaflets 4 — 10, unequally distributed on opposite 

 niargina of a dilated rachis ; pods readily dehiscent. — 

 Genus Anisolotus, Bernh. 



■i-Annnals ; floirers solilary, slwrt-pedicelUd, not bracted ; claws of petals 

 approximate ; heel pointed. 



2. L. Wraiigrelianns, F. & M. Index Sem. Petrop. 16 (1835). Hosackia 

 Wrangeliana and si(hpinnata, T. & G. Fl. i. 326 (1838), but not Lotus stib- 

 pinriatus. Lag. (1816). Less than a foot high, ascendingj much branched, 

 densely leafy, sparsely or canescently villous : leaflets about 4, cuneate- 

 obovate to oval or oblong, 3 — 6 lines long ; calyx-teeth broadly subulate, 

 equalling the tube : corolla 3 lines long, bright yellow, the broadly 

 obovate banner erect ; wings meeting above the keel, not enfolding it : 

 pod pubescent, straight, 7 — 10 lines long, 5 — 7-seeded. — Common through- 

 out middle California, especially toward the seaboard ; latterly regarded 

 as identical with the South American L. subpinnatus ; but that is a 

 smaller jilant with narrow leaflets, relatively long calyx-teeth, the petals 

 all narrower, with shorter claws, etc. Apr. May. 



3. L. humistratus, Greene, Pittonia, ii. 139 (1890) ; L. brachycarpus, 

 Wats. Index, 225 (1878), not of Hochst. (1842). Hosackia brachycarpa, 

 Benth. PI. Hartw. 306 (1849). Low and diffuse, the branches 5—8 

 in. long, herbage soft-villous : fl. nearly sessile, yellow ; calyx-teeth 

 linear, much longer than the tube : pod oblong, I3 in. long, pilose, 2 — 3- 

 seeded. — Clayey banks and hill-sides ; as widely dispersed as the pre- 

 ceding, but less common. May, June. 



4. L. deiiticulatus, Greene, 1. c. ; Drew, Bull. Torr. Club. xvi. 151, 

 under Hosackia (1889). Erect, 1 — 2^4 ^- liigt, fastigiately branching, 

 pale green and glaucous, sparingly pilose : calyx-teeth longer than the 

 tube and, with the margins of the upper leaves, somewhat denticulate : 

 corolla 2 lines long, pale yellow or salmon-color, changing to red : pod 

 pubescent, short, 3-seeded. — A most distinct species, long confounded 

 with L. Wrangelianus, but of different habitat, i. e., from Butte and 

 Humboldt counties northward to British Columbia. It is a very common 

 weed in grain fields of the upper Sacramento, and rank enough in its 

 growth to be troublesome. It combines the characteristics of this group 

 and of the next in its inflorescence ; the upper axils bearing two 

 peduncles, one short and bractless, the other elongated, bracted and 

 sometimes 2-flowered. Apr.— June. 



■i- ■)— Floirers 1 or many, on an elongated, usually bracted peduncle ; claw 



of the banner commonly remote from the others, keel mostly obtuse. 



++ Annuals ; feir-flowered. 



