Emex australis

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Emex australis
Emexaustralis.jpg
seeds
Scientific classification
Kingdom: Plantae
(unranked): Angiosperms
(unranked): Eudicots
(unranked): Core eudicots
Order: Caryophyllales
Family: Polygonaceae
Genus: Emex
Species: E. australis
Binomial name
Emex australis
Steinh.

Emex australis, commonly known in English as devil's thorn or doublegee (also double gee, from the old Afrikaner name Dubbeltge-Doorn - 'Devil's Thorn'), or three-cornered jack, is a herbaceous plant of the Polygonaceae. It occurs indigenously in South Africa and is also an invasive species in Australia.

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