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FOC | Family List | FOC Vol. 13 | Combretaceae | Anogeissus

1. Anogeissus acuminata (Roxburgh ex Candolle) Guillemin et al., Fl. Seneg. Tent. 1: 280. 1832.

榆绿木 yu lü mu

Conocarpus acuminatus Roxburgh ex Candolle, Prodr. 3: 16. 1828 ["acuminata"]; Anogeissus acuminata var. lanceolata Wallich ex C. B. Clarke; A. harmandii Pierre; A. lanceolata (Wallich ex C. B. Clarke) Wallich ex Prain; A. pierrei Gagnepain; A. tonkinensis Gagnepain.

Trees to 20 m tall; trunk to 1 m d.b.h. Branchlets slightly pendent, slender, together with petioles and leaf blades golden villous when young. Petiole cylindric, 2-6 mm; leaf blade lanceolate to narrowly so, 4-8 × 1-3 cm, abaxially gray-green and pilose mostly in axils of lateral veins, adaxially green and glabrous to glabrescent, base narrowed or obtuse, apex acuminate; lateral veins in 5-7 pairs, inconspicuous. Capitula 9-13 mm in diam., numerous flowered; bracts easily deciduous, linear, 4-5 mm. Flowers sessile. Calyx tube ca. 5 mm, abaxially yellow pubescent, densely so on ovary and tubular part, more sparsely so on cupular part. Filaments 3-4 mm. Fruit ca. 6 × 5 mm including beak, ferruginous pubescent distally and on beak. Fl. Feb-Mar (Bangladesh, Thailand).

Rocky limestone areas, one of the dominant species of deciduous forests; near sea level to 700 m. Yunnan [Bangladesh, Cambodia, India, Laos, Myanmar, Thailand, Vietnam].

In FRPS (53(1): 2. 1984), Chinese plants were treated as Anogeissus acuminata var. lanceolata. However, that entity does not seem sufficiently distinct from typical A. acuminata to justify formal taxonomic recognition. Scott (Kew Bull. 33: 563-565. 1979) recognized two varieties within A. acuminata: var. acuminata (including var. lanceolata), occurring from India to Vietnam, and var. phillyreifolia (Van Heurck & Müller Argoviensis) Kurz, apparently restricted to Myanmar. The species was listed as endangered in China by Shun (in Fu & Jin, China Pl. Red Data Book 1: 220-221. 1992).


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