566 OXAORACEAE 



leaves iniiuitely iiultiTulcnt; It^ivcs cmwdcd or approximate, tlie blades ovate, evi- 

 dently denticulate, ."? to 5 lines lonjf. sessile or very shortly petiolate; racemes very 

 short! 1 to 4-llowered, borne in the axils of the scarcely reduced upper leaves ; calyx- 

 tube 1' -J to 2' 2 J'»<*^ '<>»?. 1 ^*' - 'i"*'^ wide, the lobes 2 to 5 lines lon<r; i)etals brip:ht 

 rose-purple, roundish-obovate. obcordately 2-lobed, (4 or) 6 to 10 lines lonpr; an- 

 thers yellow, on purplish filaments; style purplish; ovary 4 to 8 lines long, linear 

 or only slightly bulging; capsules 10 to 20 lines long, comparatively few-seeded. 



Alpine or subalpine slopes. 0800 to nOOO feet: Sierra Nevada from Tulare 

 Co. to Modoc Co. July-Sept. 



Locs.— Sierra Nev.nd.i : Farewell Gap, Tulare Co., Jcpson 1021; Mt. Whitney, Burton 4- 

 Ryerson 45; Lyell Fork, Merced River, Blasdalc ; Mt. Leavitt, Tuolumne Co., J. L. Grant 436; 

 Carson Pass, Jepson 8119; Caatle Peak (Mt. Stanford), Nevada Co., Sonne; Brokeoff Mt., Te- 

 hama Co., J. GrinncU; Mt. Bidwell, Modoc Co., JepAon 7877; Mt. Shasta (N. Am. Fauna 10:155). 



Var. laxa Dempster comb. n. Leaf -blades larger (4 to 13 lines long), acute both at base and 

 apex; calvxtubc usually shorter for its width than in the species. — Siskiyou and Trinity Cos.; 

 Placer Co. The leaves' (shape, dentation), ovary, capsules and well-developed calyx-tube ally 

 this varietv to Epilobium obcordatum, rather than to E. rigidum, which it nevertheless approaches. 



Locs.— Woolly Creek, Siskiyou Co., Butler 46; Mt. Eddy, Siskiyou Co., Copeland 3857; Bear 

 Creek (head of)," Trinity Co.,' Alexander 4- Kellogg 312; Tinker's Knob, Placer Co., Sonne; 

 Summit sta. (high nits, s.). Placer Co., Sonne. 



Eefs. — Epnx)BiUM obcordatum Gray, Proc. Am. Acad. 6:532 (1866), type loc. Squaw Valley, 

 Tahoe region. Brewer; Jepson, Man. 669 (1925). E. obcordatum f. compacta Hausskn. Monog. 

 Epilob. 251 (1884), type loc. not given. E. ohcordatum var. puberulum Jepson, Man. 669 (1925), 

 type loc. Silver Pass, Fresno Co., A. L. Grant 1534. Var. laxa Dempster. E. obcordatum f. laxa 

 Hausskn. Monog. Epilob. 251 (1884), type loc. not given. 



4. E. rigidum Hausskn. Creek-fringe. Stems decumbent or ascending, 

 several from the slightly soft-woody base, 4 to 8 (or 10) inches long; herbage pal- 

 lid, glabrous or microscopically puberulent; leaves discrete, the blades elliptic- 

 ovate, acute at both ends, apparently entire, but minutely denticulate, (M2 or) 1 

 to IV2 inches long, drawn down to a short petiole; flowers few, in short (1 to 1% 

 inches) leafy-bracteate racemes; calyx-tube I/2 line long, II/2 lines broad at apex, 

 the lobes 5 to 7 lines long; petals rose-purple, roundish-obcordate, 9 to 10 lines 

 long; ovarj' 3 to 4 lines long, commonly spindle-shaped; capsules 8 to 12 lines long, 

 on pedicels 3 lines long. 



Dry stream-beds, 500 to 1600 feet : northern Del Norte Co. Northeast to Jose- 

 phine Co., Oregon. Aug. 



Locs. — Del Norte Co.: Hurdy Gurdy Creek, near Gasquet, M. S. Baher 289b; 18-Mile Creek 

 (mouth of), Tracy 10,886. Ore.: Siskiyou Mts. (base of), Cusick 2938; Waldo, T. Howell. 



Eefs. — Epilobium rigidum Hausskn. Oesterr. Bot. Zeitschr. 29:51 (1879), "Coast Range, 

 Lat. 42°", that is, near the boundary between Curry Co., Ore., and Del Norte Co., Cal. ; Trel. Rep. 

 Mo. Bot. Card. 2:82, pi. 5 (1891). 



5. E. nivium Bdg. Stems erect, tufted on a shortly branched woody root- 

 crown, 5 to 10 inches high; herbage finely short- villous; leaf -blades elliptic to linear 

 or lanceolate, coriaceous and not at all veiny, entire, a subulate brown gland at 

 apex, 3 to 7 lines long, narrowed to a short petiole ; racemes fcAv-flowered, the sub- 

 tending leaves much reduced; calyx-tube 2y2 to 3^^ lines long; petals violet-purple, 

 notched at the apex, 3 to 5 lines long; stigma 4-notched; capsule stoutish, 5 to 6 

 lines long. 



Shaly slopes, 6000 to 8000 feet : inner North Coast Range from northern Lake 

 Co. to northea-stern Mendocino Co. Sept. 



Locs.- — Snow Mt., n. Lake Co., T. Brandegee ; St. Johns Peak, ne. Lake Co., TV. W. Machie; 

 Castle Peak, ne. Mendocino Co., Jepson 14,469. 



Eefs.— Epilobium nivium Bdg. Zoe 3:242, pi. 24 (1892),>type loc. Snow Mt., Lake Co., T. 

 Brandegee; Jepson, Man. 669 (1925). 



6. E. glaberrimum Barbey. Cliff Cotton weed. Stems slender, erect, un- 

 branched or occasionall}' with a few short strict laterals, (I/2 or) 1 to 3 feet high, 



