41. Hypericum hengshanense W. T. Wang, Bull. Bot. Lab. N. E. Forest. Inst., Harbin. 5: 27. 1979.
衡山金丝桃 heng shan jin si tao
Hypericum hengshanense var. xinlinense Z. Y. Li.
Herbs, perennial, 0.62-1 m tall, erect from creeping and rooting base; stems ?single, short branched above; branches virgate. Stems terete, eglandular. Leaves sessile; blade oblong-lanceolate to narrowly oblong-elliptic, (1.5-)3-6 × (0.3-)0.7-1.6 cm, thickly papery, abaxially paler but not glaucous; laminar gland dots pale, scattered; intramarginal glands black, ± dense; main lateral veins 2(or 3)-paired, tertiary reticulation dense; base slightly oblique-cuneate or (uppermost) rounded, at least upper with black-glandular-fimbriate auricles, margin entire or black-glandular-ciliate, apex obtuse. Inflorescence 5- to ca. 18-flowered, from (1 or)2 or 3 nodes, nearly flat-topped to broadly pyramidal; bracts and bracteoles linear-lanceolate to linear, with margin and auricles black-glandular-fimbriate. Pedicel 0.5-3(-6) mm. Flowers 1.5-2.5 cm in diam., stellate; buds ellipsoid, apex obtuse. Sepals free, erect, equal, oblong-lanceolate to linear-oblong, ca. 7 × 1.5-2 mm, glandular-ciliate; laminar glands pale, lines to streaks; intramarginal glands black, few, distal or absent; marginal glands on cilia; apex acute; veins 3. Petals ?golden yellow, narrowly oblong, 9-15 × 2.5-3 mm, ca. 2 × as long as sepals; laminar glands pale, streaks to dots; marginal glands black, sessile or subsessile; margin entire. Stamens 30-35, apparently 3-fascicled, longest 8-15 mm, 0.6-0.75 × as long as petals. Ovary ovoid; styles 3, 6-18 mm, 3-7 × as long as ovary, divaricate-incurved. Capsule ovoid, 5.5-6(-?9) × 3-3.5(-?4) mm, exceeding sepals. Seeds dark brown, ca. 1 mm; testa densely scalariform-reticulate. Fl. Jul, fr. ? (coll. Dec).
● Slopes, thickets, roadsides; 600-1000 m. Guangdong (Lianshan), Guangxi ("Tong Shan"), Hunan (Heng Shan, Xinning), Jiangxi (Yongxin).
Hypericum hengshanense is closely related to H. seniawinii , differing from it by its longer styles, glandular-ciliate sepals, and glandular-auriculate leaves and bracts. The Guangxi populations have small, relatively narrower leaves and smaller flowers.