PEA FAMILY. 



317 



Near the coast from Marin Co. (Sausalito, Point Bonita, and 

 Tennessee Bay) northward; also in the interior at higher altitudes 

 (Howell Mountain, Mt. Shasta). 



10. L. affinis Agardh. Stout and very succulent; stems fistulous, 

 14 to 20 in. high, branching mostly from the middle; glabrous except 

 a short and sparse pubescence on the lower surface of the leaves; 

 leaflets 6 or mostly 7 or 8, oblong-oblanceolate or broadly cuneate- 

 obovate, obtuse or retuse, 1 to 2 in. long; petioles 1£ to 4 in. long; 

 racemes 4 to 8, on short peduncles; flowers fi to 7 lines long; bractlets 

 short; upper calyx-lip with 2 divergent teeth, the lower lip entire; 

 petals 5 to 6 lines long, deep bluish-purple, the keel glabrous; ovary 

 densely villous-pubescent. 



Vacaville; Napa Valley; Martinez; Oakland Hills; San Francisco 

 Peninsula and southward to Southern California. Very common in 

 late Feb. and in Mar. Especially characteristic of depressions in 

 hills caused by recent or old landslides. Also common along the 

 banks of winter water-courses in the hills and in low heavy soil 

 generally. The var. carnosulus (L. carnosulus Greene) is usually 

 simple with the keel villous in the middle. 



11. L. nanus Dougl. Slender, not succulent, 6 to 15 in. high, 

 often branching from the base, villous or finely pubescent: leaflets 

 linear to oblanceolate, £ to 1 in. long, usually acute, the petioles 1 to 

 3 times longer; racemes loose, short-peduncled, 3 to 7 in. long, of 

 several distinct or somewhat indistinct whorls of large fragrant 

 flowers; bracts exceeding the calyx; pedicels slender, about 3 lines 

 long; upper calyx-lip deeply cleft; lower calyx-lip 3-dentate, the 

 middle tooth sometimes obscure or wanting; corolla 8 lines long; 

 banner orbicular, retuse, with the sides reflexed, the white middle 

 part purple-spotted and turning rose-red; wings lightly joined, form- 

 ing an obliquely ovate inflated sac; keel falcate, ciliate above the 

 middle. 



Common everywhere in the Coast Range region and rather variable. 

 Flowering mostly in Apr. 



12. L. micranthus Dougl. Slender, simple or more frequently 

 branched from the base, erect or ascending, 5 to 18 in. high, pilose- 

 pubescent, not at all succulent; leaflets 5 to 7, linear to linear- 

 spatulate, £ to 1.} in. long, the petioles twice as long; racemes 

 peduncled, whorls 3 to 6, distinct or indistinct; pedicels \% lines 

 long, elongating more or less in fruit; upper calyx-lip with divergent 

 triangular acute lobes, the lower long, entire; corolla 2 to 2.^ lines 

 long, blue; banner with a white spot changing to light blue or 

 purple; wings narrow, appressed; keel falcate, densely pilose-ciliate 

 above the middle to near the apex; pod 5 to 7-seeded. 



Exceedingly variable species, common everywhere in May in the 

 hill country and on the plains; Coast Eanges; Sacramento and San 

 Joaquin Valleys; Sierra Foothills. There are apparent transitions to 

 the next species. 



Var. bicolor (L. bicolor Lindl.). Lower calyx-lip twice as long 



