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FOC | Family List | FOC Vol. 19 | Rubiaceae | Leptodermis

6. Leptodermis diffusa Batalin, Trudy Imp. S.-Peterburgsk. Bot. Sada. 13: 373. 1894.

文水野丁香 wen shui ye ding xiang

Shrubs, 1-1.5 m tall; branchlets often diffuse, together with peduncles and pedicels puberulent, terete. Petiole to 4 mm; leaf blade silver-gray or grayish yellow adaxially when dry, pale abaxially, ovate-lanceolate to elliptic, 18-40 × 8-15 mm, both surfaces glabrous, base attenuate or cuneate, apex acute or obtuse; midrib prominent below, lateral veins 4 pairs, slightly conspicuous; stipules ovate-triangular, ca. 1.5 mm, with soft hairs. Flowers terminal and in axils of upper leaves, subumbellate, usually many in a terminal, large, much-flowered panicle; pedicels usually 3-5(-8) mm; bracts purplish blue, turning brown on margins, longer than calyces, 3-3.5 mm, glabrous or hairy, membranous, connate to above middle, free portion very shortly bilabiate, labellum short, apiculate. Flowers dimorphic, heterostylous. Calyx lobes orbicular, shortly ciliate. Corolla purplish blue, funnelform, 16-18 mm, puberulent outside, sparsely pubescent inside; lobes more than 3 × shorter than tubes, broadly ovate, ca. 3.5 × 3.2 mm, abruptly acute, spreading. Anthers ca. 2.5 mm, slightly exserted in short-styled flowers; filaments as long as anthers, inserted in upper portion of calyx tube. Style exserted in long-styled flowers, filiform, glabrous; stigmas 5-lobed, linear. Immature capsule broader and longer than bracts. Fl. Aug, fr. Sep-Oct.

● Rocks at streamsides; 600-1300 m. S Gansu (Wenxian), S Sichuan.


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