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

2. Keenania tonkinensis Drake, Bull. Mus. Hist. Nat. (Paris). 1: 118. 1895.

溪楠 xi nan

Suffrutescent herbs, to 30 cm tall; stems villosulous. Petiole 1-1.5(-4) cm, glabrescent; leaf blade drying thinly papery and abaxially yellowed, elliptic-oblong or elliptic, 4-6(-12) × 2-2.5(-5) cm, adaxially glabrous, abaxially glabrous or often sparsely villosulous, base acuminate or cuneate, apex acute; secondary veins 8-10 pairs; stipules triangular, ca. 8 mm, long acuminate. Peduncle 1-3.5 cm; involucral bracts orbicular, elliptic-oblong, or subovate, 6-7 mm. Calyx with hypanthium portion broadly obconical, ca. 1 mm; lobes 5, triangular, 4-5 × ca. 1.5 mm, veined. Corolla white; tube ca. 6 mm, slightly swollen at base, slightly constricted in throat; lobes 5, ca. 1 mm. Fruit not seen.

Dense forests in valleys. Guangxi (Longzhou) [N Vietnam].

This species name was published twice, first and validly in the place cited above, then later by Drake (in J. Bot. (Morot) 9: 217. 1895); this later work is sometimes incorrectly cited as the place of first publication.


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