416 POLYGONACEAE 



Loes. — Mt. San Jacinto, Hall 816; San Bernardino Mts., Blasdale; Antimony ilt. near San 

 Emigdio, Brandegte ; Mineral King, Brandt gee ; Sequoia Park, Fry; S. Fork San Joaquin 

 Eiver, Hall 4' Clmndler 639; Sentinel Dome, Yosemite, Jepson 5647; Donner Lake, Heller 7165. 



Var. membranaceum Stokes in hb. Petioles dilated at base into a sheath 

 clasping the stem; leaves glabrate above; sheaths soon glabrate, I/2 to 1 line 

 long. — (Petiolata basi ochreata; oehreae glabreseeutae, lin. lo-l longae; folia 

 supra glabra.) — Southern California mountains. 



Locs. — Julian, Dunn; Cuyamaea Peak, Brandegee ; Mt. San Jacinto, Tanderventer. 



Refs. — Eriogonum wrighth Torr.; Benth. in DC. Prodr. 14: 15 (1856), type w. Texas, 

 Wright. E. trarhygomim Torr. in DC. Prodr. 14: 15 (1856), type coll. in California by 

 Wilkes Exped.; Jepson, Fl. W. Mid. Cal. cd. 2, 133 (1911). E. wrigMii var. trachi/gomim 

 Jepson, Fl. W. Mid. Cal. 154 (1901). Var. subswposum Wats. Bot. Cal. 2: 29 (1880). 

 E. cnrvatum Small, Bull. Torr. Club, 25: 50 (1S98), type loc. Long Mdw., Tulare Co., Dr. 

 Palmer 207. E. juneeum Greene, Leaflets, 1: 77 (1904), type loc. Kern Caflon, Culbertson 

 4396, the wire-like peduncles and the involucres soon glabrate but not otherwise different. 



33. E. nodosum Small. Stems several from the base, tri- or di-chotomously 

 branrhing, leafy below, % to II/4 (or "3i^") feet high, white-tomentulose ; 

 involucres turbinate-cylindrie, IX^ lines long, sessile aud unilaterally crowded 

 on the ultimate (I/2 to 1 inch long) branchlets or pedicellate in the forks; 

 calyx glabrous, lyo lines long, parted about half-way, the base coriaceous; 

 outer segments roundish, notched at apex, the inner similar, half as broad; 

 filaments pilose below the middle ; achene minutely scaberulous. 



Desert region : White ]\Its.. Inyo Co. ; Imperial Co. Nevada ; Lower 



California. 



Ref. — Eriogonum nodosum Small, Bull. Torr. Club, 25: 49 (1898), tvpe loc. Dos Cabczas 

 (near Coyote Well, Colorado Desert), Orcutt 1462. 



34. E. heermannii Dur. & Hilg. Stems woody at base, leafy below, soon 

 branching into a panicle, li 4 to 2 feet high ; peduncle of the panicle short, 

 repeatedly 2 or 3-forked and finally ending in somewhat spinescent branch- 

 lets; forks of the panicle rather short but straightish, rigid, somewhat divari- 

 cate, as if fistulous and a little constricted at the joints; plant floceulent or 

 glabrate on lower part, glabrous above ; leaves oblong, 6 to 8 lines long, 

 ]ietiolcd; involucres hemispherical or broadly turbinate, 1 line long, the broad 

 rounded lobes scarious-margined and overlapping at the sinuses; calyx 1 

 to 114 lines long, glabrous, the outer segments orbicular, the inner oblong, 

 much narrower. 



Mohave Desert northward to the southern Sierra Nevada and west to ]Mt. 

 Pinos, Hall 6737. Nevada. 



Ref. — Eriogonum heermannii Dur. & Hilg. Pac. E. Rep. 5^: 14, pi. 17 (1885), type loc. Pose 

 Creek, Kern Co., Heermann. 



E. SULCATUM Wats. Proc. Am. Acad. 14: 296 (1879). Very similar; branches of the panicle 

 angular, minutely scabrous. — Utah; Nev. To be looked for in the Death Valley region. Cf. 

 var. argense .Tones, Contrib. 11: 15 (1903), type loc. Argus Mts. 



35. E. plumatella Dur. & Hilg. Stems woody at base. 1 to 2 feet high, 

 the branches straightish or zig-zag, covered with a dense thin tomentum ; 

 forks (or internodes) of the panicle short, somewhat curved, continuously 

 divaricate so that the inflorescence eventually appears almost contorted ; 

 involucres narrowly eampanulate, glabrous outside, the teeth pubescent in- 

 side, not scarious margined; calyx white or pinkish. % line long; outer seg- 

 ments obovate, truncatish. inner obovate. rounded or subacute, all cuneate at 

 base; filaments a little hairy at base; beak of the ovary 3-angled, roughish. 



Southern Sierra Nevada (Walker Pass ace. Coville) and south into the 

 Mohave Desert (Lanfair, Maye L. Tennent). Flowers in rather small and com- 

 pact clusters towards the ends of the rather long panicle branches. 



Refs. — Eriogonum plumatella Dur. & Hilg. Pac. R. Rep. 5^: 14, pi. 16 (1855), type loc. 

 Pose Creek, Kern Co., Heermann; Cov. Contril). U. S. Nat. Herb. 4: 187 (1893). E. palmeri 

 Wats. Proc. Am. Acad. 12: 267 (1877), type spms. from Julian and San Felipe in San Diego 

 Co. and s. Utah, Palmer. 



