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Genus Apium Family Apiaceae

Description: Annual, biennial or perennial herbs; stems erect or prostrate, glabrous.

Leaves 1-pinnate or ternately divided.

Inflorescence a compound umbel; bracts and bracteoles absent. Flowers bisexual, white. Sepals minute or absent. Petals ± ovate with a small inflexed tip. Stylopodium short-conical or depressed.

Fruit ovoid, laterally compressed; carpophore thick, shortly bifid; mericarps with 5 prominent ribs.


Herbarium
Sheet

Distribution and occurrence: World: c. 20 species, cosmopolitan. Australia: 4 species (1 species naturalized), all States.

Text by S. M. Hastings & J. M. Powell
Taxon concept:

 Key to the species 
1Stems prostrate or sometimes more or less ascending; mature mericarps more or less covered by corky ribs, with the seed wall barely apparent between ribsApium prostratum
Stems erect; mericarps with wide intervals between ribs so that seed wall is visibleApium graveolens

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