Hypericum sect. Brathys
Hypericum cumulicola
highlands scrub hypericum, highlands scrub St. Johnswort
internodes 4-lined.
deciduous (base articulated) or persistent (base not articulated).
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.
3–15 mm diam.;
sepals persistent, (4–)5;
petals persistent, (4–)5;
stamens persistent, (5–)10–80, usually in continuous or interrupted ring, sometimes in 5 barely discernable fascicles, each of 1–2 stamens;
ovary (2–)3(–4)-merous;
placentation parietal;
styles ± spreading, bases distinct;
stigmas capitate or clavate.
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.
not carinate.
0.5–0.6 mm;
testa scalariform-reticulate.
= 12.
Hypericum sect. Brathys
Hypericum cumulicola
Species 148 (16 in the flora).
(Discussion copyrighted by Flora of North America; reprinted with permission.)
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.)
1. Herbs annual, wiry; inflorescences: branching mostly monochasial | → 2 |
1. Herbs annual or perennial, not wiry; inflorescences: branching mostly dichasial | → 3 |
2. Leaf blades linear or linear-subulate to linear-lanceolate, 5–22 mm, margins recurved to revolute; sepals 3–7 mm; capsule lengths 1–1.2 times sepals. | H. drummondii |
2. Leaf blades narrowly triangular-subulate to linear-subulate, scalelike, 1–4 mm, margins incurved; sepals 1.5–2.5 mm; capsule lengths 2–2.7 times sepals. | H. gentianoides |
3. Stems and leaves scabrous-tomentose to pilose; sepal margins setulose-ciliate. | H. setosum |
3. Stems and leaves glabrous; sepal margins sometimes ciliate, not setulose-ciliate | → 4 |
4. Leaf blades linear-subulate, 0.2–0.3 mm wide, basal veins 1, midrib unbranched. | H. cumulicola |
4. Leaf blades not linear-subulate, (0.5–)2–18 mm wide, basal veins 1–7, midrib with 0–4 pairs of branches | → 5 |
5. Leaf blades leathery; petals golden yellow or orange-yellow; stamens (35–) 50–80 | → 6 |
5. Leaf blades papery to membranous; petals usually bright, golden, or pale yellow, rarely salmon-orange; stamens 5–25 | → 11 |
6. Leaf blades linear-oblong or linear-lanceolate to linear, 0.5–2 mm wide; petals red tinged; stamens 35–50; styles 2.5–5 mm | H. paucifolium |
6. Leaf blades elliptic, lanceolate, linear-lanceolate, oblong-elliptic, obovate, or ovate, 3–18 mm wide; petals not red tinged; stamens 50–80; styles 2–4 mm | → 7 |
7. Herbs erect or ± spreading, non-aerenchymatous at base; leaves (main stems) longer than internodes | → 8 |
7. Herbs erect to ascending, usually ± aerenchymatous (spongiform-thickened) at base; leaves (main stems) mostly shorter than internodes (usually longer in. 31 H. harperi). | → 9 |
8. Leaf blades (main stem) lanceolate to oblong-elliptic or obovate, 10–30(–50) mm, apex usually acute to acuminate, rarely obtuse; subsidiary inflorescence branches with or without relatively smaller leaves. | H. virgatum |
8. Leaf blades (main stem) narrowly lanceolate, 10–40(–55) mm, apex acute to acuminate; subsidiary inflorescence branches with relatively smaller leaves. | H. radfordiorum |
9. Herbs 2–7 dm; leaf blades (main stem) usually broadly to narrowly ovate, rarely elliptic or lanceolate. | H. denticulatum |
9. Herbs 3–12 dm; leaf blades (main stem) usually lanceolate, sometimes linear-lanceolate or oblong-elliptic, rarely elliptic or ovate | → 10 |
10. Herbs erect to ascending, branching at base and in inflorescence; leaves strongly ascending to appressed, shorter than internodes, smaller distally. | H. erythreae |
10. Herbs erect, branching (from long-creeping rhizomes) at base and from mid and distal nodes; leaves ascending to deflexed, mostly longer than internodes, not or scarcely smaller distally. | H. harperi |
11. Herbs decumbent to ascending, forming loose mats; stigmas scarcely capitate. | H. anagalloides |
11. Herbs usually erect, not forming loose mats; stigmas broadly capitate | → 12 |
12. Leaf blades lanceolate, linear, narrowly elliptic, narrowly oblong-elliptic, oblanceolate, oblanceolate-linear, or obovate; capsules broadest proximal to middle | → 13 |
12. Leaf blades usually elliptic, oblong, broadly oblong-elliptic, ovate, ovate-triangular, round, or suborbiculate, rarely lanceolate; capsules usually broadest at or near middle | → 14 |
13. Leaf blades lanceolate, narrowly oblong-elliptic, or oblanceolate, (2–)6–12 mm wide, basal veins (3–)5–7; inflorescences usually compact. | H. majus |
13. Leaf blades linear to oblanceolate-linear or (proximal) oblanceolate to obovate, 0.5–5.5 mm wide, basal veins 1–3(–5); inflorescences usually diffuse. | H. canadense |
14. Leaf blades (mid and distal) lanceolate-deltate, apex usually subacute; capsules narrowly conic-ellipsoid. | H. gymnanthum |
14. Leaf blades (mid and distal) elliptic, lanceolate, oblanceolate, oblong, round, suborbiculate, or ovate, apex obtuse to rounded; capsules narrowly ovoid to cylindric-ellipsoid | → 15 |
15. Leaf blades bicolor, paler abaxially; inflorescences: bracts linear-subulate. | H. mutilum |
15. Leaf blades concolor; inflorescences: bracts not linear-subulate. | H. boreale |
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