422 



POLYGONACEAE 



Dry hills, San Carlos Range. Nearly related to E. nudum. 

 Locs. Rancho Cantua, S. C. Lillis, type; San Carlos Creek, Jepson 2722. 



46. Fi. kennedyi Porter. Stems scape-like, wiry, 3 to 8 inches* high, arising 

 from a very dense leafy cushion; leaves obovate or oblong, revolute, white- 

 woolly, 1^ to 5 lines long; involucres tomentulose or glabrate, turbinate- 

 campanulate, nerved and rather strongly angled, deeply triangular-toothed, 

 l!/2 to 2 lines long, clustered in a terminal head; calyx white or pink, glabrous, 

 1 to V/2 lines long, segments oblong-obovate ; ovary scabrous. 



Desert slopes or arid plateaus, north and south of the Mohave Desert. 



Locs. Mt. Pinos, Hall 6445; San Bernardino Mts. (where often very much reduced), 

 Abrams 2890; foothills west of Bishop, Heller 8317. 



Refs. ERIOGONUM KENNEDYI Porter; Wats. Proe. Am. Acad. 12: 263 (1877), Sierra 

 Nevada in Kern Co., W. L. Kennedy. 



E. purpusi Brandegee, Bot. Gaz. 27: 457 (1899), type loc. Argus Mts., Purpus 5484. 

 Leaves obovate, 2 to 3 lines long; peduncles filiform; calyx-segments elliptic, abruptly 

 dilated from the base. The sinuses of the involucre usually split down rather freely in 

 the type. Also collected at Independence by Hall $ Chandler 7297. It seems to be conspecific 

 with E. kennedyi. E. gracilipes Wats. Proc. Am. Acad. 24: 85 (1889), type loc. White Mts., 

 Mono Co., Shockley, with glandular-puberulent peduncles seems to be very similar to E. 

 kennedyi also. 



47. E. ochrocephalum Wats. Stems scape-like, 2 to 6 inches high, erect 

 from a caespitose leafy base; leaves silvery-tomentose, oblanceolate to ovate, 

 % to li/4 inches long, narrowed to a petiole half to as long; involucres in a 

 capitate cluster, turbinate-bellshaped, bladdery in age, l 1 /^ to 2y 2 lines long, 

 the 6 to 8 short lobes erect; calyx yellow, glabrous, 1 to l 1 ^ lines long, the 

 segments elliptic, the inner narrower, all obtuse; filaments obscurely puberu- 

 lous at base. 



Northwestern Nevada and eastern Oregon. 



Var. agnellum Jepson n. var. Dwarfer form, 2 to 4 inches high, the upper 

 portion of peduncles and heads a little glandular; leaves ovate or narrowly 



obovate, 2 to 4 lines 

 long, petioled. (Nani- 

 or, pedunculis uncialis 

 2-4 ad summis capitis- 

 ve subglandulosis, foliis 

 ovatis vel obovatis an- 

 gustatis, lin. 2-4 longis, 

 petiolatis.) -- Northern 

 Sierra Nevada: Placer 

 Co., Sonne, type, to Mo- 

 doc Co. (Willow Creek 

 Valley, E. M. Austin). 

 Ref. ERIOGONUM OCHRO- 

 CEPHALUM Wats. Bot. Cal. 

 2: 480 (1880), type loc. n. 

 w. Nev., Lemmon. 



48. E. ovalifolium 



Nutt. (Fig. 80a.) Sub- 

 alpine dwarf, the scape- 

 like stems slender, to- 

 mentulose, % to 3 

 inches high, rising from 

 a dense leafy cushion; 

 leaves round-ovate to 

 obovate, 1 to 4 lines 

 long, contracted to a usually short petiole ; involucres turbinate, woolly, several 

 crowded together in a very close head with 3 or 4 short bracts; calyx white, 



Fig. 80. a, ERIOGONUM OVALIFOLIUM Nutt. ; flower, x 10. &, var. 

 NIVALE Jones; habit, x 1; c, flower, x 10. 



