BUCKWHEAT FAMILY 



427 



60. E. latens Jepson n. sp. Peduncles naked, 8 to 12 inches high from 

 the short leafy branches of a woody caudex; leaves roundish, or somewhat 

 deltoid-ovate, acutish, short pilose, 7 to 12 lines long, abruptly or cuneately 

 narrowed at base to a margined petiole half to as long as the blade ; involucres 

 congested in a terminal head, membranous, campanulate, 3 to 4 lines long, 

 with short broad sparsely hairy lobes; calyx white, its base appressed hairy, 

 the inner segments narrower than the outer; lower third of filaments pubes- 

 cent. (Caulis brevissimus caespitosus ramosus, pedunculo nudo 8-12 polli- 

 cario; folia lin. 7-12 longa approximata orbiculata vel delto-ovata acutiuscula 

 utrinque breve pilosa ad basin in petiolum marginatum abrupte cuneateve 

 angustatum; involucra ad apicem pedunculi capitata membranacea campanu- 

 lata lin. 3-4 longa, lobis brevibus latisque; calyx albus extus basi hirsuto- 

 appressus, segmentis interioribus quam exterioribus angustioribus. ) 



Desert slopes in Inyo Co. : Timosea Peak, Jepson 5082, 6500 ft. alt. 



61. E. ursinum Wats. Peduncles scape-like from a branching woody 

 leafy crown or mat, 4 to 12 inches high, these and the umbels villous- 

 tomentulose; leaves ovate, mostly acute, cordate at base, varying to cuneate, 

 white-tomentose beneath, glabrate and greener above, 4 to 8 lines long, the 

 petiole half to as long; umbel compound, sometimes simple, 3 to 10-rayed 

 or reduced to a head-like cluster; bracts obovate to subfiliform, subtending 

 the umbel and secondary umbels, usually also with a whorl at or near the 

 middle of the rays or secondary rays; involucres campanulate-funnelform, 

 large (3 to 3y 2 lines high), thin, hairy-pubescent outside, shortly and sharply 

 toothed; calyx yellow or white, glabrous, abruptly campanulate above the 

 stipe-like base, 2 to 3 lines long; filaments copiously woolly, the wool filling 

 the base of the calyx. 



High montane, northern Sierra Nevada and North Coast Ranges, 5000 to 

 8000 feet. 



Locs. Near Summit Station, Sonne; Sierra Co., Eva Kennedy; Cisco, Harriet Walker; 

 Indian and American valleys, Lemmon; Mt. Lassen, Jepson 4103; Morgan, Hall $ Babcoclc 

 4405; Snow Mt., Lake Co., Brandegee. 



Eef. ERIOGONUM URSINUM Wats. Proe. Am. Acad. 10: 347 (1875), type loe. Plumas Co. 

 (Long and Bear valleys), Mrs. M. E. P. Ames, Lemmon. 



62. E. incamim T. & G. Peduncles stout, tomentulose, 1 to 3^ inches 

 high, arising from a matted densely leafy crown; leaves white-tomentose, 

 oblong to ovate or obovate, the edges often disposed to be revolute, 3 to 6 

 lines long, mostly short-petioled ; umbels with 4 or 5 rays 2 to 6 lines long 

 or reduced to a small dense head; bracts few, linear; calyx yellow, often 

 red, glabrous, 1 to 2 lines long, narrowed to a short stipe-like base; fila- 

 ments sparingly hairy at base. 



Gravelly slopes and peaks, high Sierra Nevada, 7000 to 12,000 feet. 



Locs. Farewell Gap, Purpus 1572; Mt. Whitney, Jepson 1076; Bullfrog Lake, Jepson 

 844; Mt. Goddard, Hall $ Chandler 696; El Capitan, Jepson 4364, 4365; Clouds Eest, Drew; 

 Mt. Lyell, Hall $ Babcoclc 3594, Jepson 3327, 3328; Macomb Eidge, Jepson 4563, 4564; 

 Tower Peak, Jepson 4547; Mt. Ealston, Hall $ Chandler 4669. 



Eefs. ERIOGONUM INCANUM T. & G. Proc. Am. Aead. 8: 161 (1870), based on Sierra 

 Nevada specimens, Brewer (upper Tuolumne Eiver), Torrey, Bolander. E. rosulatum Small, 

 Bull. Torr. Club, 25: 46 (1898), type loc. Mineral King, Coville $ Funston 1549, "filaments 

 glabrous. ' ' 



63. E. marifolium T. & G. Peduncles scape-like, slender, 3 to 12 inches 

 high, arising from a loosely branched leafy base ; leaves oval or ovate, white- 

 woolly or commonly glabrate above, 3 to 8 lines long, the petioles mostly as 

 long or longer; umbels with 3 to 6 rays % to 2y 2 inches long, the central 

 involucre sessile, or the umbel sometimes reduced to a small head; flowers 

 often more or less dioecious; yellowish (reddish in age), glabrous, 1 to 1% 

 lines long. 



