264 



LEQUMINOSAE 



oblanceolate, apiculate, glabrous above, % to 1% inches long; peduncles about 2V^ inches long; 

 racemes lax, 4 to 5 inches long; pedicels 2 to 3 lines long; flowers 4% to oVj lines long; calyx not 

 gibbous, upper lip short (about 1 to l^^. lines long), more or less 2-cleft witli broad teeth, lower 

 lip broad, entire, 2 lines long; petals violet; banner broadly oblong, the median sulcus covering 

 over Vi of the upper margin of the wings, reflexed near the apex ; keel broad, not much exposed, 

 the upper margin ciliate, nearly straight; pods 1 to 1% inches long, 3V2 to 4V^ lines wide.- — 

 Siskiyou and Shasta Cos.: Spring Camp, Jones 4" Alexander. In habit it differs markedly from 

 L. onustus, but is little known and much in need of further collection and field study. 



LuPiNUS GRACILENTUS Greene, Proc. Acad. Phila. 44:365 (1893), type loc. Tuolumne Caiion, 

 Chesnut 4- Drew; Jepson, Man. 527 (1925); tall and slender; glabrate; racemes with 4 to 6 

 distinct whorls; acumen of the keel with a few hairs. 



22. L. laxiflorus Dougl. Spur Lupine. (Fig. 184.) Plants 1 to 2 feet high, 

 tlie stems slender, several to many from a woody branched root-crown ; herbage 

 with short appressed hairs; leaflets 6 to 8, narrowly oblanceolate to oblong-oblance- 



olato, mostly bright green, 1 to 2 inches long, 

 the cauline petioles about as long to twice as 

 long ; basal and lower cauline petioles 4 to 7 

 inches long; racemes loose, slender, 3 to 4 

 inches long, the whorls definite or indefinite ; 

 bracts shorter than the calyx, mostly decidu- 

 ous ; pedicels 1 to 2 lines long ; flowers 3 to 4^^ 

 lines long ; calyx shortly spurred or saccate at 

 base on the upper side, its lips i/4 to I/3 as 

 long as petals, the upper one slightly toothed, 

 nearly as long as the entire lower one; petals 

 blue; banner more or less pubescent on back, 

 the center white, changing to buff; keel 

 wooUy-ciliolate ; pods densely hirsute, 10 to 

 12 lines long; ovules 4 to 6. 



Open hillslopes, open pine flats and valley 

 floors, 2000 to 9500 feet : northern Sierra Ne- 

 vada from Llono and Tuolumne Cos. to Modoc 

 and Siskiyou Cos., chiefly east and north of 

 the Sierra Nevada crest, occasional on the 

 west slope. North to Idaho, east to Utah. 

 May-July. 



Locs. — Convict Creek, Mono Co., Almeda Nor- 

 dyTce ; Spur, Alpine Co., Hansen 364; Souora Pass, 

 A. L. Grant 159 ; Deadman Creek, Tuolumne Co., Jep- 

 son 6572; Emerald Bay, Lake Tahoe, Helen Geis; 

 Truckee, Sonne; Cisco, Placer Co.; Summit sta., Ne- 

 vada Co., Jepson 42t, 59t; Mineral, J. Grinnell; War- 

 ner Valley, Plumas Co., Jepson 4062, 12,308; Jess 

 Valley, Warner Mts., L. S. Smith 798 ; Surprise Valley, e. Modoc Co., Jepson 7841 ; Forestdale, 

 8w. Modoc Co., M. S. Baker; Klamath Hills, near Yreka, Butler 705. White Mts.: Silver Canon 

 to Big Prospector Mdw., Jepson 7245. 



Var. calcaratus C. P. Sm. Eobust ; petals yellowish-white, sometimes blue ; calyx spur 1 line 

 long. — East side of the Sierra Nevada from Inyo Co. to Modoc Co. East to Utah, north to eastern 

 Oregon. 



Locs. — Wells ranch ranger sta., Inyo Co., Kennedy ; Long Valley, Inyo Co., K. Brandegee; 

 Sonora Pass, Brewer 1891 ; mts. by Madeline Plains, Lassen Co., Austin 4" Bruce 2144; Bear Mt., 

 Warner Mts., L. S. Smith 1048. 



Var. corymbosus Jepson comb. n. Leaflets glabrous or subglabrous above ; banner glabrous 

 or slightly pubescent on back. — Butte Co. to Siskiyou Co.: Colby, Butte Co., B. M. Austin; Edge- 

 wood, E. Brandegee; Shasta Valley, Butler 1842. North to eastern Oregon. 



Var. inyoensis Jepson comb. n. Pedicels densely pubescent with spreading hairs. — Inyo Co. : 

 Inyo Mts., Purpus 5789; McGee Mdws., near Bishop, K. Brandegee; Bishop Creek, Hall 4" 

 Chandler 7257. 



Fig. 184. LUPINUS LAXIFLORUS 



Dougl. a, base of plant, X % ; h, up- 

 per part of plant, X % ; c, calyx, X 2 ; 

 d, banner, X iy2; e, wing, X 1%; /, 

 keel, X lyo; ^, pod, X %. 



