Hypericum harperi |
Hypericum drummondii |
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Drummond's St. Johnswort, nits and lice |
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Habit | Herbs perennial, semiaquatic or aquatic, erect, branching with long-creeping rhizomes at aerenchymatous base and from mid and distal nodes, 3–10 dm. | Herbs annual, erect, branches strict, in distal 1/2, 1–8 dm, wiry. |
Stems | internodes 4-lined. |
internodes 4-lined. |
Leaves | ascending to deflexed, sessile; blade narrowly oblong-elliptic (proximal) or lanceolate to linear-lanceolate, 10–30 × 3–8 mm, mostly longer than internodes, not or scarcely smaller distally, leathery, margins plane, apex acute, basal or near-basal veins 1–3(–5), midrib with 0–2 pairs of branches. |
erect to suberect, sessile; blade linear or linear-subulate to linear-lanceolate, 5–22 × 0.5–1 mm, subcoriaceous, margins recurved to revolute, apex acute to obtuse, basal vein 1, midrib unbranched. |
Inflorescences | broadly pyramidal to subcorymbiform, 1(–30)-flowered, branching mostly dichasial. |
narrowly to broadly triangular, 1–12-flowered, branching mostly monochasial. |
Flowers | 4–10 mm diam.; sepals lanceolate, usually unequal, 3–5 × 0.8–1 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. |
5–8 mm diam.; sepals narrowly oblong to linear-lanceolate, subequal, 3–7 × 0.7–1.3 mm, apex acute; petals golden yellow to orange-yellow, oblong, 4–7 mm; stamens 10–22, separate or obscurely 3-fascicled; styles (0.5–)0.8–1.5 mm; stigmas broadly capitate. |
Capsules | ellipsoid to rostrate-subglobose, 3–4.5 × 2–2.5 mm. |
narrowly ovoid to ovoid-cylindric, 3.5–7 × 2.5–3 mm, length 1–1.2 times sepals. |
Seeds | 0.5–0.6(–0.7) mm; testa obscurely linear-reticulate to irregularly reticulate. |
0.9–1.1 mm; testa finely scalariform. |
2n | = 24. |
= 24. |
Hypericum harperi |
Hypericum drummondii |
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Phenology | Flowering mid–late summer (Jul–Sep). | Flowering summer–early fall (Jul–Sep). |
Habitat | Open Taxodium swamps, wet pine barrens | Dry, sandy or clay soil in open woods, old fields, waste or rocky places |
Elevation | 0–200 m (0–700 ft) | 0–1100 m (0–3600 ft) |
Distribution |
AL; FL; GA; SC |
AL; AR; FL; GA; IA; IL; IN; KS; KY; LA; MO; MS; NC; OH; OK; SC; TN; TX; VA
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Discussion | Hypericum drummondii is closely related to H. gentianoides. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
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Source | FNA vol. 6, p. 90. | FNA vol. 6, p. 95. |
Parent taxa | ||
Sibling taxa | ||
Synonyms | Sarothra drummondii, Brathys drummondii | |
Name authority | R. Keller: Bot. Jahrb. Syst. 58: 198. (1923) | (Greville & Hooker) Torrey & A. Gray: Fl. N. Amer. 1: 165. (1838) |
Web links |