Hypericum cumulicola
highlands scrub hypericum, highlands scrub St. Johnswort
internodes 4-lined.
appressed, sessile;
blade linear-subulate, (1–)2.5–4 × 0.2–0.3 mm, subcoriaceous, margins incurved, apex acute, basal vein 1, midrib unbranched.
subcorymbiform, to 13-flowered, branching mostly dichasial.
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.
narrowly ovoid-conic, subrostrate, 3.5–6 × 1–1.5 mm.
0.5–0.6 mm;
testa scalariform-reticulate.
= 12.
Hypericum cumulicola
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.
(Discussion copyrighted by Flora of North America; reprinted with permission.)
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