590 ONAGRACEAE 



34. E. luteum Pursh. Perennial, with a rootstock and turions; stem 2-8 

 dm. high, terete and glabrous below, pubescent on the decurrent lines above; 

 leaves sessile, glabrous or nearly so, 4-8 cm. long, dentate, ovate or lance-ovate; 

 tube of the hypanthium very short, campanulate; sepals 1 cm. long or more; 

 petals yellow, slightly exceeding the sepals; style exserted; capsule glabrescent, 

 4-6 cm. long; seeds obovoid; coma reddish. Wet places: Alaska — Alta. — Wash. 

 Mont. — Subalp. Jl-Au. 



3. CORDYLOPHORUM (Nutt.) Rydb. 



Suffruticose perennial herbs, branched at the base. Leaves mostly opposite, 

 narrow, entire. Flowers perfect, axillary, irregular. Hypanthium prolonged 

 beyond the ovary into a broadly funnelform tube. Sepals 4. Petals 4, un- 

 equal, pale yellow, notched at the apex. Stamens 8, declined. Style slightly 

 declined, long-exserted ; stigma deeply 4-Iobed. Capsule fusiform, elongate, 

 4-valved. Seeds with a deciduous coma. 



1. C. sufEruticosum (Nutt.) Rydb. Suffruticose perennial; stems many, 

 decumbent or ascending, more or less strigose, terete; leaves sessile, lanceolate, 

 acute, entire, 1-3 cm. long, cinereous-strigose ; tube of hypanthium about 3 mm. 

 long; calyx-lobes about 5 mm. long; petals slightly exceeding the calyx, pale 

 yellow; capsule 1.5-2.5 cm. long; seeds obovoid-oblong, 2.5-3 mm. long; coma 

 tawny. Epilobium suffruticosum Nutt. Stony places: Mont. — Wy. — Wash. 

 Jl-Au. 



4. ZAUSCHNERIA Presl. 



Perennial cespitose herbs, sometimes shrubby at the base. Leaves, except 

 those of the inflorescence, opposite, toothed. Flowers perfect, somewhat ir- 

 regular, racemose, showy. Hypanthium inflated above the ovary, then funnel- 

 form, with 4 erect and 4 reflexed scales in the throat. Sepals and petals 4, the 

 latter scarlet, retuse, obcordate, or deeply cleft. Stamens 8, the alternate ones 

 inserted with the petals lower down. Styles elongate and exserted; stigma pel- 

 tate or capitate, 4-lobed. Capsule elongate-fusiform, obtusely angled, locu- 

 hcidal, 4-valved. Seeds with a coma. 



Leaves ovate; lateral veins strong. 1. Z. Garrettii. 



Leaves oblanceolate; lateral veins faint. 2. Z. crassifolia. 



1. Z. Garrettii A. Nels. Stems erect from a decumbent base, 1.5-3 dm. 

 high, with pale shreddy bark below, softly hirsute above; leaves sessile; elliptic, 

 oval, or ovate, 2-3 cm. long, remotely dentate, sparsely soft-hirsute; tube of 

 hypanthium red, 12-16 mm. long; petals deep-red, obovate-obcordate ; capsule 

 minutely glandular-puberulent on the angles. Dry hills: Utah. Submont. — 

 Mont. Au. 



2. Z. crassifolia Rydb. Stems 2-4 dm. high, pilose; bark in age exfohat- 

 ing; leaves .sessile, oblanceolate or elliptic-oblanceolate, 1.5-3 cm. long, acute at 

 each end, denticulate, pilose or in age glabrate; flowers crimson; hypanthium 

 trumpet-shaped, 2 cm. long; sepals narrowly lanceolate, 8 mm. long; petals 

 about 1 cm. long, oblanceolate; capsule about 2 cm. long, cyhndric. Canons 

 and sandy soil: Ariz. — s Utah. Son. S-N. 



5. GAYOPHYTUM A. Juss. Baby's Breath. 

 Caulescent annuals. Leaves very narrow, Unear, entire. Flowers axillary, 

 minute, perfect. Hypanthium not produced above the ovary. Sepals 4, re- 

 flexed, deciduous. Petals 4, small, obovate or spatulate, white or rose-colored. 

 Stamens 8, those opposite the petals shorter and with sterile anthers. Stigmas 

 capitate or clavate. Capsule clavate or linear, 2-celied, 4-valved. Seeds with- 

 out a coma. 



Seeds canescent. 



Petals ;i-6 mm. long. 1. G. enospermum. 



Petals about 1 mm. long. 



Plant diffusely branched, glabrous throughout, or upper part of the stem and 

 capsules strigillose; capsule distinctly pedicelled. 2. G. lasiospcrmum. 



Plant with strict branches, hirsutulous; pedicel of capsule very short or almost 

 none. 3. G. Helleri. 



