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

1. Myrioneuron effusum (Pitard) Merrill, J. Arnold Arbor. 23: 195. 1942.

大叶密脉木 da ye mi mai mu

Myrioneuron nutans Wallich ex Kurz var. effusum Pitard in Lecomte, Fl. Indo-Chine 3: 192. 1923.

Shrubs, to 2 m tall; branches densely puberulent or often papillose to glabrous. Petiole 0.5-4 cm, densely puberulent; leaf blade in life adaxially dark green, abaxially pale white, drying papery, elliptic-oblong, oblanceolate, or obovate, 13-25 × 5.5-14 cm, adaxially glabrous, abaxially densely puberulent at least on veins, base acute to cuneate, apex acute; secondary veins 15-23 pairs; stipules ovate to lanceolate, 1.5-2.2 cm, densely puberulent, distinctly palmately veined, acute to shortly bilobed. Inflorescences pseudoaxillary and/or infrequently terminal, congested-cymose, subglobose to ovoid, subsessile, 1.5-2 cm; bracts lanceolate or ovate, 8-10 mm, densely puberulent, densely longitudinally veined, acuminate. Flowers subsessile. Calyx puberulent to glabrous; hypanthium portion obconic, 1.5-3 mm; limb lobed to base; lobes lanceolate to narrowly triangular or linear, 6-7 mm. Corolla tubular; tube ca. 10 mm; lobes oblong-ovate, ca. 2.5 mm. Berries subglobose, 3-4 × 4-5 mm, glabrescent. Fl. Jul-Aug, fr. Oct-Nov.

On rocks in ravines; 500-700 m. Guangxi (Longzhou) [N Vietnam].


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