Hypericum cumulicola

(Small) W. P. Adams

Rhodora 64: 234. 1962.

Conservation concernEndemic
Basionym: Sanidophyllum cumulicola Small Bull. Torrey Bot. Club 51: 391. 1924
Treatment appears in FNA Volume 6. Treatment on page 91. Mentioned on page 88.

Herbs perennial, erect, branching at or just below ground level and in inflorescence, 2–7.5 dm. Stems: internodes 4-lined. Leaves appressed, sessile; blade linear-subulate, (1–)2.5–4 × 0.2–0.3 mm, subcoriaceous, margins incurved, apex acute, basal vein 1, midrib unbranched. Inflorescences subcorymbiform, to 13-flowered, branching mostly dichasial. Flowers 3–4 mm diam.; sepals ovate to elliptic or narrowly oblong, unequal, 1.5–2 × 0.6–1 mm, margins sometimes ciliate, not setulose-ciliate, apex acute to subacute; petals yellow, obovate-oblong, 3.5–5 mm; stamens 20–25, irregularly arranged; styles 1.5–2 mm; stigmas capitate. Capsules narrowly ovoid-conic, subrostrate, 3.5–6 × 1–1.5 mm. Seeds 0.5–0.6 mm; testa scalariform-reticulate. 2n = 12.

Phenology: Flowering spring–late fall (Mar–Nov).
Habitat: Scrub, on ancient white-sand dunes
Elevation: 50 m


Of conservation concern.

Hypericum cumulicola is confined to Highlands and Polk counties and its habitat is under threat from bulldozers and citrus groves (D. B. Ward 1980); its nearest relative, with the same chromosome number, appears to be H. setosum.

Hypericum cumulicola is in the Center for Plant Conservation’s National Collection of Endangered Plants.

Selected References


Lower Taxa

... more about "Hypericum cumulicola"
Norman K. B. Robson +
(Small) W. P. Adams +
Sanidophyllum cumulicola +
Scrub, on ancient white-sand dunes +
Flowering spring–late fall (Mar–Nov). +
Conservation concern +  and Endemic +
Undefined sect. Brathys +, Hypericum sect. Brathys +, H. sect. Spachium +, H. subsect. Spachium +, H. sect. Trigynobrathys +  and Sarothra sect. Trigynobrathys +
Hypericum cumulicola +
Hypericum sect. Brathys +
species +