Hypericum virgatum |
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sharpleaf St. Johnswort |
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Habit | Herbs perennial, erect, unbranched or branching at base and in inflorescence, 4–7.5(–10) dm. |
Stems | internodes 4-lined. |
Leaves | (main stem) ascending to spreading, sessile; blade lanceolate to oblong-elliptic or obovate, 10–30(–50) × 3–8(–12) mm, on main stem, longer than internodes, leathery, margins plane, apex usually acute to acuminate, rarely obtuse, basal veins 1–3+, midrib with 2–3 pairs of inconspicuous branches. |
Inflorescences | broadly cylindric to corymbiform, 25–70-flowered, branching mostly dichasial, subsidiary branches with or without relatively smaller leaves. |
Flowers | 8–13 mm diam.; sepals narrowly ovate to lanceolate, equal, 3–3.5 × 1.5–2.5 mm, margins sometimes ciliate, not setulose-ciliate, apex acute to acuminate; petals orange-yellow, obovate, 6–10 mm; stamens 50–80, irregularly grouped; styles 2–4 mm; stigmas capitate. |
Capsules | ovoid to rostrate-subglobose, 3–5 × 2–3 mm. |
Seeds | (0.5–)0.6–0.8(–0.9) mm; testa reticulate. |
2n | = 24. |
Hypericum virgatum |
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Phenology | Flowering mid–late summer (Jun–Sep). |
Habitat | Dry roadsides, fields, open woods |
Elevation | 0–700 m (0–2300 ft) |
Distribution |
AL; AR; FL; GA; IL; IN; KY; LA; MD; MS; NC; OH; SC; TN; VA; WV |
Source | FNA vol. 6, p. 90. |
Parent taxa | |
Sibling taxa | |
Synonyms | Brathys lanceolata, H. acutifolium, H. denticulatum subsp. acutifolium, H. denticulatum var. acutifolium, H. denticulatum var. recognitum, H. virgatum var. acutifolium |
Name authority | Lamarck: in J. Lamarck et al., Encycl. 4: 158. (1796) |
Web links |