Spermatophyta: Dicotyledonae: Archichlamydeae

Amaranthaceae - Amaranth or pigweed family

Townsend, C.C. (1988) Amaranthaceae FZ 9(1)

Description of the family

Annual or perennial herbs, sometimes woody at the base or, rarely, small shrubs (Psilotrichum scleranthum). Stipules 0. Leaves simple, alternate or opposite. Inflorescence various, bracteate; bracts hyaline to membranous, straw-coloured to white, subtending one or more flowers. Flowers bisexual or unisexual, mostly actinomorphic with 2 bracteoles, frequently in ultimate small 3-flowered cymes, the lateral flowers often sterile and modified into scales, spines, hooks or hairs. Tepals often green or white or variously coloured, usually 5, arranged in 1 whorl, membranous to firm, finally hardening and often falling with the ripe fruit. Ovary superior, 1-locular. Fruit a capsule, rarely a berry.

Comment: Amaranthaceae is a family which lacks the usual differentiation into sepals and petals, possessing instead 1 whorl of variously coloured tepals and each flower usually subtended by 1 bract and 2 bracteoles.

Worldwide: 71 genera and 750 species, mostly tropical and warm, few temperate.

Gomphrena celosioides

More sample images from the Amaranthaceae (Click on each image to see a larger version and details of the record)

Celosia trigyna

Celosia trigyna

Kyphocarpa angustifolia

Kyphocarpa angustifolia

Aerva lanata

Aerva lanata

Alternanthera nodiflora

Alternanthera nodiflora

Amaranthus hybridus

Amaranthus hybridus

Links to genera:     View: living plant images - herbarium specimen images - all images for this family

GenusContent
Achyranthes L.Description, Image
Achyropsis (Moq.) Hook. f.Description
Aerva Forssk.Description, Image
Alternanthera Forssk.Description
Amaranthus L.Description
Celosia L.Description, Image
Centema Hook. f.
Centemopsis SchinzDescription
Centrostachys Wall.Description
Cyathula BlumeDescription, Image
Gomphrena L.Description, Image
Guilleminea KunthDescription
Hermbstaedtia Rchb.Description, Image
Kyphocarpa (Fenzl ex Endl.) Lopr.Description
Nothosaerva Wight
Pandiaka (Moq.) Hook. f.
Psilotrichum BlumeDescription, Image
Pupalia A. Juss.Description
Sericorema (Hook. f.) Lopr.Description

Other sources of information about Amaranthaceae:

Flora of Mozambique: cultivated Amaranthaceae page
Flora of Zimbabwe: Amaranthaceae
GRIN (Germplasm Resources Information Network) taxonomy for plants report for Amaranthaceae
Google: Web - Images - Scholar


Copyright: Mark Hyde, Bart Wursten, Petra Ballings and Stefaan Dondeyne 2007-13

Hyde, M.A., Wursten, B.T., Ballings, P. & Dondeyne, S. (2013). Flora of Mozambique: Family page: Amaranthaceae.
http://www.mozambiqueflora.com/speciesdata/family.php?family_id=8, retrieved 18 May 2013

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