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

15. Ophiorrhiza ensiformis H. S. Lo, Bull. Bot. Res., Harbin. 10(2): 22. 1990.

剑齿蛇根草 jian chi she gen cao

Herbs, ascending; stems pilosulous at least when young. Leaves in subequal pairs; petiole 1-3 cm, pilose; blade drying submembranous, brown or dark brown, elliptic, ovate, or elliptic-oblong, 5-12 × 2.5-5.5 cm, adaxially sparsely ferruginous pilosulous, abaxially glabrous or subglabrous, base obtuse then narrowed to decurrent, margins entire, apex acute to rather abruptly acuminate; secondary veins 10-12 pairs; stipules generally persistent, broadly triangular then abruptly narrowed, 3-5 mm, glabrescent, ciliate, long acuminate. Inflorescences congested-cymose, several to many flowered, ferruginous pilosulous; peduncle ca. 1.5 cm; axes rather short, helicoid; bracts linear-ensiform to narrowly spatulate, 5-7 mm, glabrescent, pinnately veined, ciliate, acute. Flowers with biology unknown, with short pedicels. Calyx with hypanthium subturbinate, ca. 1.5 × 2.5 mm, 5-ribbed, with dense ferruginous long trichomes mixed with unicellular trichomes; lobes linear-ensiform to spatulate, 5-7.5 mm, pinnately veined, glabrescent except ciliate, acute. Corolla white, tubular-funnelform, outside 5-ribbed or 5-ridged in upper portion, glabrous or sparsely hispidulous along ribs; tube 13-14 mm, inside with white villous ring in throat; lobes triangular, 2-2.5 mm, dorsally narrowly winged, obtuse, rostrate. Capsules rhomboid-pyramidal, ca. 4 × 8 mm, pilosulous. Fl. Jan.

● Streamsides; ca. 2000 m. Yunnan (Longling).


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