Hypericum radfordiorum

Weakley ex J. R. Allison

Castanea 76: 110, fig. 3. 2011.

Treatment appears in FNA Volume 6. Treatment on page 90. Mentioned on page 88.

Herbs perennial, erect or ± spreading, branching at base and beyond, (3–)4–7(–7.8) dm. Stems: 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. Inflorescences cylindric, to 40-flowered; branching mostly dichasial, subsidiary branches usually with relatively smaller leaves. 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. Capsules ovoid, 5 × 3–4 mm. Seeds 0.4–0.8 mm; testa linear-pitted. 2n = 24.


Phenology: Flowering late spring–fall (May–)Jun–Sep(–Oct).
Habitat: Granitic outcrops
Elevation: 500–800 m

Discussion

Selected References

None.

Lower Taxa

None.
... more about "Hypericum radfordiorum"
Norman K. B. Robson +
Weakley ex J. R. Allison +
500–800 m +
Granitic outcrops +
Flowering late spring–fall (May–)Jun–Sep(–Oct). +
Undefined sect. Brathys +, Hypericum sect. Brathys +, H. sect. Spachium +, H. subsect. Spachium +, H. sect. Trigynobrathys +  and Sarothra sect. Trigynobrathys +
Hypericum radfordiorum +
Hypericum sect. Brathys +
species +