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FOC | Family List | FOC Vol. 11 | Meliaceae

11. Aglaia Loureiro, Fl. Cochinch. 1: 98, 173. 1790.

米仔兰属 mi zi lan shu

Authors: Hua Peng & Caroline M. Pannell

Trees or shrubs, dioecious, young parts usually lepidote or stellately pubescent. Leaves alternate to subopposite, odd-pinnate, 3-foliolate, or rarely simple; leaflet blade margins entire. Flowers in axillary thyrses, small, usually globose. Calyx slightly or deeply 3-5-lobed. Petals 3-5, short, concave, quincuncial or imbricate in bud, distinct or rarely basally connate and adnate to staminal tube. Stamens as many as or more than petals; staminal tube usually subglobose, obovoid, or cup-shaped with apex incurved, apical margin entire, crenate, or shallowly lobed; anthers 5 or 6(-12), included, slightly exserted, or rarely semiexserted. Disk absent. Ovary 1-3(or 4)-locular, with 1 or 2 ovules per locule; style short or absent; stigma ovoid or shortly cylindric. Fruit with fibrous pericarp, indehiscent with 1 or 2 locules or loculicidally dehiscent with 3 locules; locules without seeds or each containing 1 seed; pericarp often containing latex. Seeds usually surrounded by a colloidal and fleshy aril; endosperm absent.

About 120 species: tropical and subtropical Asia, tropical Australia, Pacific islands; eight species in China.

Aglaia is the only source of the group of about 50 known representatives of compounds that bear a unique cyclopenta[b]tetrahydrobenzofuran skeleton. These compounds are more commonly called rocaglate or rocaglamide derivatives, or flavaglines, and have been found to have anticancer and pesticidal properties. Since the first representative in this group was only discovered in 1982, this is one of the few recent examples of a completely new class of plant secondary metabolites of biological promise (see B. G. Wang et al., Biochem. Syst. Ecol. 32: 1223-1226. 2004; L. W. Chaidir et al., J. Nat. Prod. 64: 1216-1220. 2001).

1 Fruit dehiscent; petals 3 or 4 (A. sect. Amoora (Roxburgh) Pannell and A. sect. Neoaglaia Harms)   (2)
+ Fruit indehiscent; petals 5 (A. sect. Aglaia)   (4)
2 (1) Leaflets 11.   1 A. spectabilis
+ Leaflets 3-9   (3)
3 (2) Indumentum lepidote.   2 A. lawii
+ Indumentum stellate.   3 A. teysmanniana
4 (1) Leaflet blades densely lepidote on both surfaces or only abaxially densely lepidote   (5)
+ Leaflet blades glabrous on both surfaces or only abaxially sparsely lepidote along midvein   (6)
5 (4) Leaflets (1 or)3-7; leaflet blades obovate to elliptic, 4-8 cm, abaxially densely yellow squamate, adaxially densely silvery squamate; anthers 5.   4 A. elaeagnoidea
+ Leaflets 7; leaflet blades elliptic to oblong, 8-13 cm, abaxially densely brown squamate, adaxially glabrous; anthers 6.   5 A. rimosa
6 (4) Leaflet blades abaxially sparsely lepidote along midvein   (7)
+ Leaflet blades glabrous on both surfaces   (8)
7 (6) Leaflets (1 or)3-7, opposite to subopposite; leaflet blade midveins adaxially prominent; petiole and rachis brown squamate.   4 A. elaeagnoidea
+ Leaflets 7-9(-11), alternate to subopposite; leaflet blade midveins adaxially conspicuously depressed; petiole and rachis brown squamate when young but glabrescent.   7 A. edulis
8 (6) Petiole and rachis narrowly winged; leaflets opposite; panicles glabrous.   8 A. odorata
+ Petiole and rachis not winged; leaflets alternate to subopposite; panicles lepidote   (9)
9 (8) Leaflets (1 or)3-7, opposite to subopposite; leaflet blades 8-12 cm, secondary veins 5-10 on each side of midvein; panicles covered with scalelike stellate rust-colored trichomes.   4 A. elaeagnoidea
+ Leaflets 9-13, alternate to subopposite; leaflet blades 5-15 cm, secondary veins 12-16 on each side of midvein; panicles grayish lepidote.   6 A. perviridis

Lower Taxa


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