EVENING PRIMROSE FAMILY 565 



Stems reddish; leaves mainly opposite; petals 3 to 5 lines long; 



coastal 10. E. watsonii. 



Stems greenish or light-colored; leaves opposite or the upper mostly 



alternate; petals l^/^ to 2^4 lines long; mostly interior 



11. JB. calif ornicum. 

 Eootstocks producing fleshy-scaly globose winter buds; plants simple-stemmed; 



herbage commonly glabrous 12. E. brevistylum. 



Annuals ; stems with shreddy bark ; xerophilous plants. 



Plants 2 inches to 1^2 feet high, more or less pubescent; stem simple or equally branched 



throughout; calyx-tube less than % line long; leaves opposite 13. E. minutum. 



Plants 1% to 5 feet high, glabrous, at least below; stem paniculately branched above; calyx- 

 tube 1 to 2 lines long 14. E. paniculatum. 



1. E. angustifolium L. Purple Fire-weed. Stem erect, mostly simple, 2 to 

 7 feet high, glabrous, or puberulent above; leaf -blades lanceolate, nearly entire, 

 lateral veins confluent in submarginal loops, 4 to 6 inches long, sessile or nearly 

 so, or the lower short-petioled; flowers large, in long racemes with small slender 

 bracts; corolla slightly irregular, lilac-purple; petals 5 to 8 lines long, entire or 

 slightly emarginate; stamens purple, in a single row, with filaments dilated at base; 

 style exceeding the stamens, hairy at base, at first recurved; capsule 2 to 3 inches 

 long. 



Moist or boggy ground, in cleared lands or along creeks, and especially in fire- 

 swept areas: mountains of coastal Southern California, 6500 to 9000 feet; Sierra 

 Nevada from Tulare Co. to Modoc Co., 4700 to 10,000 feet; White Mts.; North 

 Coast Ranges from Sonoma Co. to Del Norte Co., 20 to 3000 feet. Northern North 

 America, Europe, Asia. June- Aug. 



Locs. — S. Cal.: Cuyamaca, T. Brandegee; Tahquitz Valley, San Jacinto Mts., Hall 723; 

 Pine Lake, San Bernardino Mts., R. D. Williams; Prairie Fork, San Gabriel Eiver, Peirson 2506. 

 Sierra Nevada : North Fork Middle Tule River, Jepson 4699 ; Giant Forest, Tulare Co., Newlon 

 22 ; Palisade Creek, Fresno Co., E. Ferguson 509 ; Huntington Lake, Jepson 13,060 ; Kennedy 

 Mdw., Tuolumne Co., A. L. Grant 172; Rock Creek, Mono Co., Almeda NordyTce; Dorrington, 

 Calaveras Co., Jepson 10,197; Big Mdws., Plumas Co., Piatt; Mineral, Tehama Co., J. Grinnell; 

 Martin Sprs., Eagle Lake, Brown 4' Wieslander 37 ; Coyote Creek, Warner Mts., L. S. Smith 1063; 

 Ft. Bidwell, Jepson 7915. White Mts., A. C. Shelton. North Coast Ranges: Russian River sta., 

 Sonoma Co., Alice Bolton; Pt. Arena, Bioletti; Ft. Bragg, Jepson 14,443; Richardson Grove, 

 Garberville, Jepson 10,654 ; Weott, South Fork Eel River, Jepson 12,360 ; Big Lagoon, Humboldt 

 Co., Tracy 7755; Crescent City, Paries 8384. 



Var. pygmaeum Jepson var. n. Dwarf, 6 to 7 inches high; leaf -blades narrow-lanceolate, 

 acuminate, 1 to 1% inches long; petals white, 21/^ to 3 lines long. — (Nanum, unc. 6-7 altum; folia 

 anguste lanceolata, acuminata, unc. 1-1% longa; petala alba, lin. 21^-3 longa.) — Taboose Pass, 

 Inyo Co., 10,500 feet, Peirson 2538 (type). 



Refs. — Epilobium angustifolium L. Sp. PI. 347 (1753), tjTpe from northern Europe; Jep- 

 son, Man. 668, fig. 665 (1925). E. spicatum Lam. Fl. Fr. 3:482 (1778), type from France. 

 Chamaenerion spicatum S. F. Gray, Nat. Arr. Brit. PI. 2:559 (1821). Var. pygmaeum Jepson. 



2. E. latifolium L. Alpine Fireweed. Stems several to many, commonly 

 simple, erect or ascending from the short branches of the root-crown, I/2 to 2 feet 

 high, puberulent above; leaf -blades lanceolate to elliptic-ovate, rather coriaceous, 

 glaucous and veinless on both surfaces, entire, sessile or nearly so, % to 2 inches 

 long ; racemes short, few-flowered, leafy ; petals rose-color, 6 to 10 lines long ; style 

 much shorter than the stamens; stigma-lobes oblong; capsules 2 to 3 inches long. 



Wet ground, subalpine, 8000 to 9000 feet : easterly summits or east side of the 

 Sierra Nevada in Tuolumne and Mono Cos. North to Alaska, east to Colorado 

 and Labrador; Europe, Asia. Sept. 



Locs. — Deadman's Creek, near Sonora Pass, A. L. Grant 387; Lundy, Mono Co., Maud 

 Minthorn. 



Refs. — Epilobium latifoijum L. Sp. PI. 347 (1753), type from Siberia; Jepson, Man. 668 

 (1925). Chamaenerion latifoUum Sweet, Hort. Brit. ed. 2, 198 (1830). 



8. E, obcordatum Gray. Sierra Rock-fringe. Rose Epilobium. Stems 

 simple, decumbent, several from the slightly soft- woody base, 2 to 4 (or 6) inches 

 long; herbage glabrous and frequently glaucous, or the stems and sometimes the 



