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

4. Psychotria densa W. C. Chen, Acta Phytotax. Sin. 30: 270. 1992.

密脉九节 mi mai jiu jie

Shrubs, 1-3 m tall; stems densely dark hirtellous to tomentulose. Petiole 1.5-7.5 cm, densely hirtellous; leaf blade drying papery or thinly leathery, dark brownish gray or greenish gray, elliptic, elliptic-oblong, or oblong-oblanceolate, 10-26 × 4-12.5 cm, glabrous adaxially, hirtellous abaxially with pubescence denser along principal veins, base cuneate to obtuse, margins flat, apex acute or shortly acuminate; secondary veins 12-18 pairs, forming a weak to distinct submarginal vein, without domatia; stipules caducous, broadly triangular to triangular-ovate, interpetiolar, 10-15 mm, densely hirtellous to tomentulose, acute to acuminate or bilobed for 1/10-1/3, lobes ligulate to deltoid, rounded to acute or acuminate. Inflorescences terminal, congested-cymose to thyrsiform, many flowered, densely hirtellous to tomentulose, pedunculate; peduncle 1-3 cm; branched portion pyramidal to rounded, 3-7 × 2.5-7.5 cm; bracts triangular to ovate, 1-4 mm, often glabrescent. Flowers sessile or subsessile. Calyx glabrous; hypanthium portion obconic, ca. 2 mm; limb 0.5-1.2 mm, lobed for ca. 1/2; lobes triangular. Corolla presumably white, tubular, glabrous outside; tube ca. 4 mm, in throat white villous; lobes triangular-oblong, ca. 2 mm. Drupes red, ellipsoid, 8-10 × 5-6 mm; pyrenes 3- or 4-ribbed. Fl. Apr-May, fr. Jun-Jan of following year.

● Forests on mountains; 1200-1700 m. Yunnan (Hekou, Pingbian).

This name was validly published as cited above; the same article was republished later in the same journal in the same year, with this species treated on pp. 484-486. The later treatment is sometimes cited as the place of publication but is superfluous. The protologue described the stipules as "acuminate" and this was illustrated in the figure, but a paratype (X. Q. Liu 100347, MO!) has shortly bilobed stipules.


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