326 LEGUMINOSAE 



Var. davidsonii Jcpson comb. n. Herbage bluish-green or silvery; peduncles IV^ to 11 lines 

 long; flowers 2iA to 4 lines long; calyx-teeth V^ to % as long as tube. — Pine belt, 5000 to 9100 

 feet: San Gabriel and San Bernardino mountains; mountains of northern Ventura Co. May-Aug. 



Locs. — Mt. "Wilson, Pcirson 96; Jft. Gleason, Barhcr 260; Bluff Lake, San Bernardino Mts., 

 Mum 10,530; Glen Martin, San Bernardino Mts., E. J. Smith; Whitewater Basin, C. M. Wilder 

 1112; Mt. Pinos, Hall 6537. 



Kefs. — Lotus ARGOPnYLi.us Greene, Pitt. 2:149 (1890); Jepson, Man. 554 (1925). Ho- 

 sacl'ia argophi/Ua Gray, Mem. Am. Acad. n. ser. 5:316 (1854), type loc. Santa Isabel, Thurber; 

 Trask, Erythea 7:139'(1S99). Syrmatium argophyllum Greene, Bull. Cal. Acad. 2:147 (1886). 

 Hosachia argentea Kell. Proc. Cal. Acad. 3:38, pi. 8 (1863), type loc. Kern Eiver, Hutchings. 

 Var. DECORUS Ottley, Univ. Cal. Publ. Bot. 10:237 (1923); Jepson, Man. I.e. Hosaclcia argo- 

 phylla var. decora Jtn. Bull. S. Cal. Acad. 17:63 (1918), type loc. Cascade Canon, fork of San 

 Antonio Canon, San Gabriel Mts., Johnston 1278. Var. fremontii Ottley, I.e.; Jepson, Man. I.e. 

 Hosachin argophylla var. fremontii Gray, Proc. Acad. Phila. 15:347 (1863), type loc. "eastern 

 side of the Sierra Nevada". L. fremontii Hel. Cat. N. Am. PI. ed. 2, 7 (1900). Syrmatium fre- 

 montii Hel. Muhl. 9:67 (1913). Var. niveus Ottley, I.e.; Jepson, Man. I.e. Syrmatium niveum 

 Greene, Bull. Cal. Acad. 2:148 (1886), tj'pe loc. Santa Cruz Isl., Greene. L. niveus Greene, Pitt. 

 2:148 (1890). Var. davidsonii Jepson. L. sulphtireus Greene, Pitt. 2:293 (1892), type loc. 

 "Wilson's Peak, Los Angeles Co., Davidson; not Lotus sulphureus Boiss. (1843). L. davidsonii 

 Greene, Erythea 1:207 (1893) ; Jepson, Man. I.e. Syrmatium davidsonii Hel. Muhl. 9:67 (1913). 



24. L. douglasii Greene. Pine Lotus. Stems slender, many from the branched 

 root-ero"wn, decumbent or prostrate, % to 2 feet long; herbage minutely pubescent; 

 leaves 2i/^ to 6 lines long; leaflets 4 or 5, oblanceolate or obovate, mostly acute, 2 to 

 41/4 lines long; umbels 4 to 7-flo"wered, sessile or on peduncles i,^ to 7 lines long; 

 bract of 1 or more leaflets or none; flo"wers 41/4 to 6 lines long; calyx-teeth equaling 

 the tube; corolla yellow, aging red; "wings oblong, noticeably surpassing the keel; 

 pods arcuate, attenuately beaked, mostly clearly keeled, canescent, extending well 

 beyond the calyx-teeth, the body 2 lines long. 



Dry rocky flats or mountain slopes, 2000 to 4000 feet : Sierra Co. to Shasta Co. ; 

 Mendocino Co. to Siskiyou Co, North to Washington and Idaho. May-July. 



Locs. — Sierra Valley, Lemmon; Susanville, T. Brandegee; Big Valley,- Lassen Co., M. S. 

 Bal-er; Goose Valley, Shasta Co., BaTcer ^ Nutting; Yreka, Heller 8000; Travelers Home, e. 

 Mendocino Co., Cronemiller 619. 



Var. nevadensis Ottley. Branches mry; flowers 2 to 3^/^ lines long; calyx-teeth % to % 

 as long as the tube ; wings equaling or exceeding the keel. — Dry sandy ridges and open flats of 

 the mountain forests, 3500 to 7200 feet: Sierra Nevada, north to Siskiyou Co., south to moun- 

 tains of Southern California. East to Nevada, 



Field note. — This variety is a characteristic mat-like herb on the openly wooded ridges or 

 slopes of the Pinus ponderosa belt of the Sierra Nevada, The trailing stems, radiating from the 

 root-crown, tend to be simple. In the northern part of the state the variety is largely replaced 

 by the species into which it insensibly merges. Indeed it is scarcely worth maintaining, since 

 there is every gradation from the species to the variety in length of calyx-teeth, and in other fea- 

 tures there is no constant character, 



Locs. — Siskiyou Co.: Upton, near Mt. Shasta, Jepson 13,797; Yreka, Biitler 392. Sierra 

 Nevada: Bear Valley, Nevada Co., Jepson 13,801; Emerald Bay, Lake Tahoe, Ottley 1188; Mey- 

 ers sta., Eldorado Co., Ottley 959; Kennedy Mdw., Tuolumne Co., A. L. Grant 916; Harden 

 Eanch, Tuolumne Co., Jepson 10,565; Big Mdw., betw. Coulterville and Yosemite, Jepson 13,799; 

 Eoyal Arches, Yosemite, Jepson 10,475 ; Alder Creek trail, Yosemite, Jepson 4322 ; Lake Merced, 

 Merced Eiver, Jepson 3196; Chowchilla School, Mariposa Co., Jepson 12,815; Arnold Mdw., 

 Fresno Co., A. L. Grant 1391 ; McKinley Big Trees, Fresno Co., Jepson 16,008 ; Kings Canon, 

 Jepson 774; betw. Pinehurst and Badger, Fresno Co., Ottley 1407; Kern Lake, Kern Canon, 

 Jepson. S. Cal. : Strawberry Valley, Mt. San Jacinto, Jepson 2287. 



Var. congestus Ottley. Branches shorter than in the species ; more villous ; intemodes short ; 

 umbels dense, leafy-congested at the tips of the branches ; leaflets narrowly rhomboidal or rhom- 

 boidal-obovate, acute at both ends. — Hill country, 1400 to 3600 feet: Lake Co. to Humboldt and 

 Siskiyou Cos. May-July. 



Locs. — Snow Mt., n. Lake Co., T. Brandegee; Asa Bean Eidge, ne. Mendocino Co., Jepson 

 13,800; Pilot Eidge, Humboldt Co., Chesnut ^ Drew; Buck Mt., Humboldt Co., Tracy 2913; 

 Three Creeks to "Willow Creek, n. Humboldt Co., Jepson 1979 ; Orleans Bar to Sommes Bar, Hum- 

 boldt Co., Chandler 1487; Hayfork Mt., Trinity Co., Tracy 6441; "Weaverville (n. of), H. S. 

 Yates 300; Siskiyou Co. (Univ. Cal. Publ. Bot. 10:236). 



Eefs.— Lotus douglasii Greene, Pitt. 2:149 (1890) ; Jepson, Man. 553 (1925). HosacMa 

 decumbens Benth.; Lindl. Bot. Eeg. sub t. 1257 (1829), type from "Northwest coast of America", 

 Douglas; not Lotus decumbens Poiret (1814). L. incanus Dougl.; Hook. Fl. Bor. Am. 1:134 



