Herbs moderately to densely strigillose, and/or some­times glandular puberulent or villous; from fibrous or, sometimes, slightly fleshy rootstock or producing rhizomes. Leaves: basal 3–10 × 0.5–2 cm, petiole 1–4 cm, blade oblanceolate to obovate, margins subentire or weakly and remotely denticulate; cauline 2–6(–8) × 0.1–1(–1.7) cm, petiole 0.2–2(–4) cm, blade linear, lanceolate to oblanceolate, narrowly elliptic, or nar­rowly ovate, margins subentire or weakly and remotely denticulate. Flowers: buds with free tips 0.5–1(–6) mm, usually connivent, sometimes spreading; floral tube5–15 mm; sepals 5–20 mm; petals (8–)15–25 mm. Capsules clavate to oblong-clavate, widest distal to middle, angled, rarely narrowly winged, (5–)10–17(–20) × (2–)3–4 mm, stipe 3–10 mm; sessile. 2n = 28, 42.

Phenology: Flowering Apr–Aug(–Sep).
Habitat: Open habitats, meadows, stream margins, edges of woods, open woods, margins of freshwater or saltwater marshes, stabilized sand dunes, roadsides, partially disturbed habitats.
Elevation: 0–500(–1100) m.

Distribution

• Generated Map
• Legacy Map

Ala., Ark., Conn., Del., D.C., Fla., Ga., Ill., Ind., Ky., La., Md., Mass., Miss., Mo., N.Y., N.C., Ohio, Okla., Pa., S.C., Tenn., Va., W.Va.

Discussion

Kneiffia suffruticosa Spach (1835) is an illegitimate substitution for Oenothera fruticosa, as is K. angustifolia Spach (1835) one for O. linearis Michaux, and O. linearis var. allenii Britton (1894) is one based on O. fruticosa var. humifusa.

Selected References

None.

Lower Taxa

None.