114 
3. EPILOBIUM L. ( WILLOW- HERB. ) 
Mostly perennials, with nearly sessile leaves, violet or purple or white 
flowers, calyx-tube scarcely prolonged beyond the ovary and with a 4 
or 5-lobed deciduous limb, 4 petals, 8 stamens with short anthers, and 
a linear capsule containing numerous seeds with a tuft of long hairs at 
the end. 
1. E. adenocaulon Haussk., var. (7) PERPLEXANS Trelease. Simple or nearly so, 
almost smooth below, mostly canescent with incurved hairs in the intlorescence: 
leaves 2.5 to 5 em. long, divergent, lanceolate, rather obtuse and sparingly undu- 
late-serrulate, more or less tapering into a short petiole: flowers small, with rose- 
colored petals: seeds obovoid, with a tuft of white hairs. (£. coloratum ot Contr. 
Nat. Herb. I., 37)—Sumewhat abundant west of the Pecos. 
4. GANOTHERA L. (EVENING PRIMROSE.) 
Plants of diverse habit, with alternate leaves, yellow or white or rose- 
colored flowers, deciduous ‘alyx-tube prolonged beyond the ovary and 
with 4 reflexed lobes, 4 petals, 8 stamens with mostly linear and versa- 
tile anthers, and a 4-valved capsule containing many naked seeds. 
§ 1. Stigma-lobes linear, elongated (very short in No. 10): calyx tube linear, slightly 
dilated at the throat: petals never lilac or purple : anthers linear. 
* Caulescent: flowers erect before opening, yellow, the calya-tips free: capsules sessile, 
coriaceous, straight or nearly 80: seeds in 2 rows in each cell. 
~ Flowers in a leafy spike: capsules oblong, slightly attenuate above : seed with more or less 
margined angles, nearly smooth. 
1. G.biennis L. Rather stout, erect, 3 to 15 dm. high, usually simple, canescently 
puberulent and more or less hirsute or strigose: leaves lanceolate to oblong, or rarely 
ovate-lanceolate, 5 to 15 cm. long, acute or acuminate, repandly denticulate, the low- 
est petioled: calyx-tube 2.5 to 6.5 cm. long: capsule 18 to 20 mim, long.—Throughout 
Texas. Var. GRANDIFLORA Lindl. has petals equaling the calyx-tube, 
2. Gh. Jamesii Torr, & Gray. Resembling the last, but much stouter and larger- 
flowered, the stem 15 to 30 din. high, becoming thick and woody at base: pubescence 
appressed, canescently puberulent, with scattered substrigose hairs: calyx-tube 7.5 
to 12.5 em. long: capsule 2.5 to Sem, long, —On stream banks, from the Colorado west to 
the mountains beyond the Pecos and New Mexico. 
4 ~ Flowers ina leafy spike: capsules linear : seeds not margined, minutely tuberculate. 
3. CH. heterophylla Spach. Erect, often branched above, 3 to 6 dm. high, pubes- 
cence usually sparse, strigose or hirsute : leaves lanceolate, acute, the lower attenuate 
at base and occasionally sinuate-pinnatifid, the upper repand-denticulate, the upper- 
most oblong to ovate-lanceolate or subcordate: spike rather loose and few-flowered: 
calyx-tube slender, 2.5 to 3.5 cm. long, sparing villous: petals roundish: capsule 18 
to 25 mm. long—Plains of western Texas. 
+ ++ Flowers axillary: capsules linear. 
4, Gi. Drummondii Hook. Stems decumbent or ascending, 3 to 6 dm. long, sim- 
ple or branched : pubescence more or less dense, short, strigose, appressed, longer and 
more spreading on the calyx and ovary: leaves oblong-lanceolate or oblanceolate, 1.5 
to 6.5 em. long, acute, attenuate to the base, entire or sparingly repand-denticulate, 
or subsinuate-toothed at base: tlowers large: capsule 2.5 to 5 cm. long: seeds obscurely 
