226 EPILOBIACE^. 



Calyx-tube prolonged beyond the ovary, deciduous ; the lobes spreading 

 or reflexed. Petals 4, with claws. Stamens 8 ; filaments with or without 

 a scale-like appendage at base ; anthers oval. Ovary 4-celled, with 1 or 

 2 pendulous ovules in each cell ; stigma i-lobed or discoid. Fruit hard 

 and nut-like, dehiscent at apex only, or not at all. Seeds 1 or several. 



* Filameals wilTi a scale-like appendage on the inside helow; stigma 4-lohed, 

 surrounded by a ring or indusium. — Gaura proper. 



1. a, parviflora, Dougl.; Lehm. Pugill. ii. 15 (1830). Annual, erect, 

 1 — 5 ft. high ; pubescence dense, spreading, very soft : leaves ovate to 

 lanceolate, repand-deuticulate : fi. small, in dense strict terminal spikes; 

 petals spatulate-oblong, scarcely unguiculate, shorter than the calyx- 

 lobes, rose-red : anthers oval, versatile : fr. 3 — 4 lines long, obscurely 

 4-angled at summit, 4-nerved, about 2-seeded, indehiscent. — Upper valley 

 of the San Joaquin and southward. 



* * Filaments naked; sligina discoid. — Genus Heterogaura, Kothr. 



2. Gr. heterandra, Torr. Pac. E. Rep. iv. 87 (1857). Heterogaura, 

 Californica, Rothr. Proc. Am. Acad. vi. 854 (1864). Annual, slender, 

 erect, glabrous, except the younger parts, which are slightly puberulent: 

 leaves very thin, ovate-lanceolate, entire or obsoletely sinuate-dentate, 

 petiolate : spikes panicled, loose : the lowest flowers leafy-bracted : 

 petals narrowly spatulate, 2 lines long, purple : anthers round-cordate, 

 basifixed ; those opposite the petals borne on shorter filaments, lanceo- 

 late, acute, sterile : fr. 2 lines long, obovoid, 4-angled. — On shady banks 

 in the woods of the Sierra Nevada from Yuba Co. southward ; also at 

 Fort Tejon. June — Aug. 



9. CIRCJEA, Lobelius (Enchanter's Nightshade). Erect slender 

 perennials, with opposite petiolate thin leaves, and small white flowers 

 in terminal and lateral racemes ; fruit on slender spreading or deflexed 

 pedicels. Calyx-tube little produced above the obovoid ovary, the base 

 nearly filled by a cup-shaped disk ; limb 2-parted, deciduous. Petals 2, 

 obcordate. Stamens 2, alternate with the petals ; anthers small, rounded. 

 Ovary 1- or 2-celled ; ovules 1 in each cell, ascending. Fruit pear- 

 shaped, indehiscent, covered with hooked prickles. 



1. C. Paciflca, Ascherson & Magnus, Bot. Zeit. xxix. 392 (1871); 

 C Luleliana, Boland. Cat. 12, not of Lobel. Glabrous, simple, ^^ — 1 ft. 

 high, from a perennial slender running rootstock : leaves ovate, rounded 

 or cordate at base, acuminate, repand-denticulate, 1 — 2% in. long, on 

 slender jjetioles about as long : racemes bractless : fl. 3^ line long ; 

 calyx white, with very short tube : fr. 1 line long, rather loosely clothed 

 with soft hairs which are merely curved above, scarcely hooked, 1-celled, 

 1-seeded. — Yosemite and northward in the mountains ; inhabiting cool 

 moist shades, by springs and streamlets. 



