Difference between revisions of "Oenothera fruticosa subsp. tetragona"
PhytoKeys 34: 16. 2014.
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Latest revision as of 10:33, 9 May 2022
Herbs mostly glandular puberulent or glabrous, sometimes strigillose or villous on stems; from fibrous rootstock. Leaves in a basal rosette and cauline, basal 3–12 × 0.5–3 cm, petiole 1–3 cm, blade oblanceolate to obovate, margins dentate to remotely denticulate; cauline 2–6(–11) × (0.5–)1–2(–5) cm, sometimes glaucous; petiole 0.1–2(–6) cm; blade narrowly elliptic to broadly ovate, margins dentate to remotely denticulate. Flowers: buds with free tips (3–)4–8(–13) mm, connivent to spreading; floral tube 5–20 mm; sepals 8–22 mm; petals (8–)15–20(–30) mm. Capsules oblong to oblong-ellipsoid, widest at middle, (5–)10–17(–20) × (2–)3–4(–6) mm, 4-winged, sometimes 4-angled, stipe 0.1–3(–7) mm; sessile. 2n = 28.
Phenology: Flowering Apr–Aug(–Sep).
Habitat: Open meadows, stream margins, edges of woods, open woods.
Elevation: (100–)300–1700 m.
Distribution
N.S., Ont., Que., Ala., Conn., Del., D.C., Ga., Ill., Ind., Ky., La., Maine, Md., Mass., Mich., Mo., N.H., N.Y., N.C., Ohio, Pa., R.I., S.C., Tenn., Va., W.Va.
Discussion
Oenothera serotina Sweet (1826) is a homonym, not Lehmann (1826), while Kneiffia floribunda Spach (1835) is an illegitimate substitution based on O. tetragona, and both names pertain here.
Selected References
None.