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FOC | Family List | FOC Vol. 13 | Clusiaceae | Hypericum

5. Hypericum cohaerens N. Robson, Bull. Brit. Mus. (Nat. Hist.), Bot. 12: 235. 1985.

连柱金丝桃 lian zhu jin si tao

Shrubs, height unrecorded; branches spreading. Stems 4-lined and ancipitous when young, soon terete; internodes 1.5-2.3 cm, shorter than leaves. Leaves with petiole 1.5-2 mm; blade oblong to elliptic, 2.5-5 × 1.2-2.3 cm, thickly papery, abaxially paler but not glaucous; laminar glands very small, dots; abaxial glands absent; main lateral veins 2- or 3-paired, all or the upper sometimes uniting with midvein branches to form ± crenate intramarginal vein, tertiary reticulation very dense, not very conspicuous; base cuneate to subangustate, apex acute to rounded. Inflorescence 1-7-flowered, from apical node, lax, shallowly round-topped; bracts caducous, linear. Pedicels 8-11 mm. Flowers 3.5-5 cm in diam., stellate; buds ovoid, apex subacuminate. Sepals spreading, narrowly lanceolate to linear, equal, 0.9-1.2 cm × 1.5-3 mm; laminar glands lines, margin entire, apex acute. Petals golden yellow, oblanceolate, 1.6-2.5 × 0.8-1.3 mm, ca. 2 × as long as sepals; margin entire, eglandular; apiculus acute. Stamen fascicles each with ca. 30 stamens, longest 1.6-2 cm or more, 0.8-0.95 × as long as petals. Ovary ovoid to subglobose, 4-5 × 3-4 mm; styles 1-1.2 cm, 2.2-2.5 × as long as ovary, at first up to half coherent but becoming free, straight. Capsule and seeds unknown. Fl. May-Jul.

● Thickets on rocky slopes; 1400-2000 m. NE Guizhou (Fanjing Shan), NE Yunnan (Daguan).

The styles in this species are almost certainly secondarily free; its nearest relatives would seem to be Hypericum monogynum forms (iii) and (iv).


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