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Genus Ammi Family Apiaceae

Description: Erect branching annual or perennial herbs with a slender taproot, usually glabrous.

Leaves 1–3-pinnatisect or ternately dissected; petiole sheathing.

Inflorescence terminal and axillary, a compound umbel; bracts numerous, entire or pinnatisect; rays numerous; bracteoles numerous, entire; pedicels spreading. Flowers bisexual, white. Sepals minute or absent. Petals ovate to obcordate, the apex inflexed, 2-lobed. Stylopodium depressed-conical.

Fruit ovoid to ovoid-oblong, laterally compressed, glabrous; carpophore entire or bifid to base; mericarp ribs prominent, filiform, acute.


Distribution and occurrence: World: c. 10 species, southern Europe, western Asia, tropical Africa, Madeira & the Azores. Australia: 2 species (naturalized), Qld, N.S.W, Vic., S.A., W.A.

Text by J. M. Powell, except for genera with authors listed
Taxon concept:

 Key to the species 
1Basal and lower stem leaves with elliptic or obovate segments with toothed margins; umbels usually with 20–40 rays; rays slender and erect to spreading in flower and fruitAmmi majus
All leaves with filiform segments with entire margins; umbels with 40–100 rays; rays slender in the flower becoming thickened and hardened in fruitAmmi visnaga

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