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

Distribution

• Generated Map
• Legacy Map

Fla.

Discussion

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

None.

Lower Taxa

None.