318 



LEQUMINOSAE 



Mts., w. Yolo Co., C. F. Baker 2903 ; Vaca Mts., Jcpson 13,808; Monte Rio, Sonoma Co., Charlotte 

 Eoak: Mt. Tamalpaia, T. Brandcgce ; Carmol Valley, Brewer 675; Arroyo Seco, Monterey Co., 

 Brewer 677; Paao Robles, Barber. Coastal S. Cal.: Sycamore Cafion, Santa Inez Mts., Jepson 

 9141; Santa Monica Cafion, Barber 107; Lukens Peak, San Gabriel Mts., Ottlcy 683; near Cajon 

 Pass on the desert side, ilary Bcal; Glen Martin, San Bernardino Mts., R. J. Smith 12; Straw- 

 berry Valley, Mt. San Jacinto, Jepson 1286; Witch Creek, San Diego Co., Alderson; Descanso, 

 San Diego Co., T. Brandegee ; Cuyamaca. T. Brandcgce. 



Refs.— Lotus orandiflorus Greene, Pitt. 2:145 (1890); Jepson, Fl. W. Mid. Cal. 301 

 (1901), ed. 2, 230 (1911), Man. 550, fig. 541 (1925). Ilosaekia grandiflora Benth. Trans. Linn. 

 Soc. 17:360 (1837), type from Cal., Douglas. Anisolotus grandiflorus Hel. Muhl. 8:20 (1912). 

 Ilosaekia luaerantha Greene, Bull. Cal. Acad. 1:81 (1885), type loc. Sweetwater Creek, Eldorado 

 Co., Curran (more robust than the prevailing form). L. macranthus Greene, Pitt. 2:146 (1890). 

 Anisolotus macranthus Hel. I.e. 48. L. grandiflorus 

 var. mutabilis Ottley, Univ. Cal. Publ. Bot. 10:208 

 (1923) ; Jepson, Man. I.e. Hosaekia grandiflora var.? 

 anthylloides Gray, Proc. Acad. Phila. 15:350 (1863), 

 type loc. Santa Lucia Mts., Brexver. JI. anthylloides 

 Millsp. Field Mus. Publ. Bot. 5:150 (1923). L. leu- 

 cophacus Greene, Pitt. 2:145 (1890) ; Jepson, Fl. W. 

 Mid. Cal. 301 (1901), ed. 2, 230 (1911). Anisolotus 

 leucophaeus Hel. Muhl. 8:48 (1912). L. confinis 

 Greene, Erythea 1:258 (1893), type loc. "mountains 

 of San Diego Co., near the U. S. and Mexican boun- 

 dary", E. D. Alderson, definitely at Witch Creek ace. 

 to herb, label. 



Fig. 202. Lotus rigidus Greene, a, fl. 

 branch, X % ; 6, fl., X 1 ; c, pod, X %. 



9. L. rigidus Greene. Broom Lotus. 

 (Fig. 202.) Low but erect bush, I14 to 3 feet 

 high; stems many from the root-crown, woody 

 at base, coarse, rigid, rush-like; internodes 

 long; herbage canescent to scantily puberu- 

 lent, becoming glabrate; leaves few, short (2 

 to 8 lines long), shortly petioled or sometimes 

 subsessile; leaflets 3 or 5, often palmately 

 crowded, broadly oblong to obovate, obtuse or 

 truncate, II/2 to 7 lines long, markedly vari- 

 able in length; peduncles 1^4 to 3% inches 

 long; umbels 1 to 3-flowered; bracts when 

 present commonly of 1 small leaflet; flowers 

 7 to 8 lines long; calyx-teeth broadly subu- 

 late, 1/4 to y2 as long as the tube (rarely almost equaling it) ; corolla yellow, aging 

 brown-purple; pods linear, glabrous, straw-color, shining as if lacquered, terete, 

 straight, % to 1% inches long, I1/3 to 1% lines wide; seeds globose, granulose. 



Arid slopes or sandy washes, 1100 to 3000 feet : Inyo Co., south through the 

 eastern Mohave Desert to the Colorado Desert. East to Utah and Arizona, south 

 to Lower California. IMar.-June. 



Field note. — The corolla is a clear lemon -yellow ; it ages to brown-purple, the banner chang- 

 ing much later than the keel and wings, which change together. 



Locs. — Pleasant Cafion, Panamint Range, Hall 6944; Argus Mts., Inyo Co., Purpus 5737; 

 Haekberry Mt., near Goffs, e. Mohave Desert, Ferris 7250 ; Cottonwood Spr., Cottonwood Mts., 

 Jepson 12,573; Lookout Mt. (n. of Indio), Jepson 5984; Palm Canon, San Jacinto Mts., Jepson 

 1382 ; Devils Canon, Santa Rosa Mts., Clary 4a; San Felipe Valley, e. San Diego Co., Jepson 8723; 

 Vallecito, e. San Diego Co., Jepson 8586. 



Refs. — Lotus rigidus Greene, Pitt. 2:142 (1890); Jepson, Man. 550 (1925). Eosackia 

 rigida Benth. PI. Hartw. 305 (1848), type loc. near "Monterey, Coulter", but obviously erroneous, 

 undoubtedly collected in the Colorado Desert. Anisolotus rigidus Rvdb. Bull. Torr. Club 33:144 

 (1906). L. argensis Cov. Contrib. U. S. Nat. Herb. 4:83 (1893),'type loc. Shepherd's Canon, 

 Argus Mts., Inyo Co., Coville Sr Funston 736. Anisolotus argensis Hel. Muhl. 9 :67 (1913) . 



10. L. wrightii Greene var. multicaulis Ottley. Scrub Lotus. Stems slen- 

 der, branching from base, decumbent or ascending, 3 to 15 inches long; herbage 



