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FOC | Family List | FOC Vol. 19 | Annonaceae

23. Annona Linnaeus, Sp. Pl. 1: 536. 1753.

番荔枝属 fan li zhi shu

Authors: Bingtao Li & Michael G. Gilbert

Guanabanus Miller.

Trees or shrubs, with an indument of simple or stellate hairs. Inflorescences terminal, leaf-opposed, extra-axillary, or sometimes cauliflorous, never axillary, 1-flowered or in few-flowered clusters. Pedicel usually short. Sepals 3, small, valvate. Petals 6, in 2 whorls or inner whorl rudimentary or absent, free or connate at base; outer petals valvate, fleshy but leathery when dry, connivent or somewhat spreading, inside basally concave, margin thick; inner petals imbricate or valvate. Stamens many; filament short; connectives apically convex or apiculate. Carpels many, often connate; ovule 1 per carpel, basal; styles clavate; stigmas muriculate. Fruit syncarpous, surface covered with knobs, bulges, spines, or less often smooth. Seeds many per syncarp, embedded in edible pulp.

About 100 species: mostly in tropical America, a few in tropical Africa; seven species (all introduced) in China.

Annona includes several trees that have become widely grown for their fruit.

1 Inner petals present   (2)
+ Inner petals absent or reduced to minute scales   (4)
2 (1) Carpels glabrous; ripe syncarp smooth.   1 A. glabra
+ Carpels pubescent; ripe syncarp with soft prickles   (3)
3 (2) Leaf blade elliptic, 14-24 cm, secondary veins punctate at base; inner petals glabrous.   2 A. montana
+ Leaf blade obovate-oblong to ovate-elliptic, 5-18 cm, secondary veins not punctate at base; inner petals pubescent.   3 A. muricata
4 (1) Leaf blade abaxially tomentose   (5)
+ Leaf blade abaxially pubescent or puberulent when young, glabrescent   (6)
5 (4) Axillary vegetative buds glabrous; leaf blade adaxially pubescent; leaves associated with flowering branches not auriculate.   4 A. cherimolia
+ Axillary vegetative buds pubescent; leaf blade adaxially glabrous; leaves associated with flowering branches auriculate.   5 A. diversifolia
6 (4) Outer petals outside surface and carpels hairy; ripe syncarp not pruinose, areoles flattened and separated by ± raised ridges; fruit pulp yellowish.   6 A. reticulata
+ Outer petals and carpels glabrous; ripe syncarp slightly pruinose, areoles convex and separated by deep grooves; fruit pulp whitish.   7 A. squamosa

Lower Taxa


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