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FNA | Family List | FNA Vol. 6 | Hypericaceae | Hypericum

32. Hypericum virgatum Lamarck in J. Lamarck et al., Encycl. 4: 158. 1796.
[E F]

Brathys lanceolata Spach; Hypericum acutifolium Elliott; H. denticulatum Walter subsp. acutifolium (Elliott) N. Robson; H. denticulatum var. acutifolium (Elliott) S. F. Blake; H. denticulatum var. recognitum Fernald & B. G. Schubert; H. virgatum var. acutifolium (Elliott) J. M. Coulter

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.

Flowering mid–late summer (Jun–Sep). Dry roadsides, fields, open woods; 0–700 m; Ala., Ark., Fla., Ga., Ill., Ind., Ky., La., Md., Miss., N.C., Ohio, S.C., Tenn., Va., W.Va.


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