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FNA | Family List | FNA Vol. 10 | Onagraceae | Oenothera

1717k.2. Oenothera Linnaeus (sect. Gaura) subsect. Schizocarya (Spach) W. L. Wagner & Hoch, Syst. Bot. Monogr. 83: 168. 2007.

Schizocarya Spach, Ann. Sci. Nat., Bot., sér. 2, 4: 170. 1835; Gaura [unranked] Schizocarya (Spach) Endlicher; Gaura sect. Schizocarya (Spach) P. H. Raven & D. P. Gregory

Herbs annual; from enlarged taproot. Stems usually unbranched, sometimes branched. Inflorescences slender, nodding. Flowers 4-merous, nearly actinomorphic, opening near sunset; floral tube 1.5–5 mm; petals white, slightly unequal; filaments with minute basal scale. Capsules reflexed in age, fusiform, terete, weakly 4-angled in distal 1/3, angles becoming broad and rounded in proximal part, tapering abruptly toward base; sessile. 2n = 14.

Species 1: w, c United States, n, c Mexico; introduced in s South America, Asia (China, Japan), Australia.


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