Hypericum radfordiorum |
Hypericum harperi |
|
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brushy mountain St. Johnswort |
|
|
Habit | Herbs perennial, erect or ± spreading, branching at base and beyond, (3–)4–7(–7.8) dm. | Herbs perennial, semiaquatic or aquatic, erect, branching with long-creeping rhizomes at aerenchymatous base and from mid and distal nodes, 3–10 dm. |
Stems | internodes 4-lined. |
internodes 4-lined. |
Leaves | ascending to widely spreading, sessile; blade narrowly lanceolate (linear-lanceolate on axillary branches), 10–40(–55) × 5–10(–13) mm, longer than internodes, leathery, margins plane, apex acute to acuminate, densely gland-dotted, basal vein 1, midrib with inconspicuous branches. |
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. |
Inflorescences | cylindric, to 40-flowered; branching mostly dichasial, subsidiary branches usually with relatively smaller leaves. |
broadly pyramidal to subcorymbiform, 1(–30)-flowered, branching mostly dichasial. |
Flowers | 8–15+ mm diam.; sepals lanceolate, unequal (outer slightly wider than inner), 3–6(–7.5) × 1.1–1.8(–2.2) mm, margins sometimes ciliate, not setulose-ciliate, apex acute or acuminate; petals orange-yellow, obovate, 5–10 mm; stamens 50–80, filaments basally connate; styles 2–4 mm; stigmas capitate. |
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. |
Capsules | ovoid, 5 × 3–4 mm. |
ellipsoid to rostrate-subglobose, 3–4.5 × 2–2.5 mm. |
Seeds | 0.4–0.8 mm; testa linear-pitted. |
0.5–0.6(–0.7) mm; testa obscurely linear-reticulate to irregularly reticulate. |
2n | = 24. |
= 24. |
Hypericum radfordiorum |
Hypericum harperi |
|
Phenology | Flowering late spring–fall (May–)Jun–Sep(–Oct). | Flowering mid–late summer (Jul–Sep). |
Habitat | Granitic outcrops | Open Taxodium swamps, wet pine barrens |
Elevation | 500–800 m (1600–2600 ft) | 0–200 m (0–700 ft) |
Distribution |
NC |
AL; FL; GA; SC |
Source | FNA vol. 6, p. 90. | FNA vol. 6, p. 90. |
Parent taxa | ||
Sibling taxa | ||
Name authority | Weakley ex J. R. Allison: Castanea 76: 110, fig. 3. (2011) | R. Keller: Bot. Jahrb. Syst. 58: 198. (1923) |
Web links |