586 ONAGRACEAE 



^, ^ . , Petals pink-purple. 16. E. delicatum. 



Plants with stolons or soboles. low, 1-2 (seldom 3) dm. high; leaf-blades oval 



or oblong, indistinctly denticulate. 

 Leaves more or less distinctly petioled. 



Petals white; plant 1-3 dm. high, stoloniferous. 17. E. alpinum. 



Petals pnrple or pink. 



Plant 1-3 dm. high, soboliferous ; flowers 5-7 mm. long. 



18. E. Hornemannii. 

 Plant usually less than 1 dm. high, stoloniferous; flowers less than 



5 nmi, long. 



Flowers nodding in the bud; pods cylindric; seeds smooth. 



19. E. anagallidi folium. 

 Flowers ascending in the bud; pods somewhat clavate; seeds 



papillose. 20. E. clavatum. 



Leaves sessile; plant glabrous up to the hypanthium. 



Stem somewhat angled by the decurrent lines; plant stoloniferous; 

 leaves oblong or linear, less than 1.5 cm. long. 



21. E. oregonense. 

 Stem terete, without decurrent lines; plant more or less glaucous. 



soboliferous. 

 Stem-leaves linear-lanceolate. 22. E, glaherrimum. 



T^^ Stem-leaves ovate or ovate-lanceolate. 23. E. pJatuphyllum. 



i^eaves narrow, linear or linear-oblong, entire or minutely denticulate; capsule 



cinereous. 



Innovations of long subterranean shoots, bearing at their ends ovoid turions; 



petals white. 



Leaves and lower part of the stem glabrous, 24. E. wyomingense. 



i^eaves and stem crisp-pubescent. 25. E. linear e. 



innovations leafy rosettes; petals pale; leaves 5-15 mm. long. 

 Ann,.^» -^.i, , 26. E. daviiricum. 



Jiti^ ^*^ ^8^® °^ ^^^^ shreddy, straw-colored bark; stigma 4-cleft. 

 seeas smooth; stem more or less strigose or crisp-hairy, not viscid; leaves lance- 



euiptic; calyx (with the tube of the hjT)anthium) about 2 mm. long. 

 Q„^j^ ^, . , ^ , , 27. E. Lindleyi. 



»eeas munculate; stem glabrous throughout or glandular above; leaves linear or 



rr.„^^^Pf^y l"^^^^-^?'}^CQola,tG; calyx usually over 2 mm. long. 

 lUDe ot the h5T)anthium funnelform, 1-3 mm. (rarely 4 mm.) long. 



i'etals white, only slightly exceeding the calyx, 2-3 mm. long; capsule 



glabrous; tube of hjrpanthium 1-1.5 mm. long. 

 T> + , . , 28. £;. Tracyi, 



I'etais pink or purple, 3.5-7 mm. long, about twice as long as the calyx. 

 Capsule and pedicels glabrous or sparingly puberulent. 



Leaves and bracts very thick, horny at the apex, the latter very 



short; capsule glabrous; pedicels short. 29. E. subulatum. 

 Leaves and bracts not very thick, not horny at the apex; capsule 

 usually puberulent, at least when young; pedicels slender. 

 „ , 30. E. paniculatum. 



capsule and pedicels glandular-pubescent; pedicels very short. 

 rp„>^^^-^, , , , 31. E. adenocladon. 



lUDe or the hjiianthium 4-8 mm. long, cylindric or nearly so, abruptly widen- 



ing into the calyx, 

 lube of the hypanthium about 4 mm. long; petals 6-7 mm. long, 

 rr. X. - ^, , 32. E, laevicaule. 



luoe or the hypanthium 7-8 mm. long; petals 10-12 mm. long. 



p^ifoi*. ,,^n , , . 33. E. Hammondii> 



Petals yellow; perennials; stigma 4-cleft. 34. E. luteum. 



• ^ ^' }*P"^^"^ Parish. Perennial, with turions (subterranean bulb-like 

 wmter-buds); stem 1-3 dm. high, pilose with long silky hairs; inflorescence 

 mmutely glandular; leaves 2-3 cm. long, ovate or broadly lanceolate, serrate or 

 serrulate, rounded at the base. rpssiIp nilr^c^ +>ir^nn-i.r.ii+. ^o+^i^ xt-v-i'fn nr laven- 



. long, 



Short-beaked, with a white scant coma. Wet meadows: Wash— Ida— -, ^^^- 

 o on. Je- Jl. ■* 



?'^^^?n^'^^TC^ 1^^^^- Perennial by meaiis of turions; stem obtusely 

 angiea, o-iu dm. high, finely puberulent throughout; leaves sessile, ovate, acute, 

 aentate, d-7 em. long, pubescent on both sides, or glabrate below, except the 

 veins; mflorescence crisp-hairy; calyx-lobes linear-lanceolate, about 5 mm. long; 

 petals rose, 7-8 mm. long; pod 4r-6 cm. long, glandular-pilose; seeds 1.5 mm. 

 tong, almost beakless; coma tawny. Moist places: Ida.— Mont. Submont. 



Perennials propagating by turions or occasionally 



Palmeri 



4—6 dm 



3-4 



