Rumex hypogaeus

Rumex hypogaeus
	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 southern threecornerjack,^[1] devil's thorn,^{[citation needed]} or double gee^[2] (also doublegee, 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 & Texas in the USA.

References

^ NRCS. "Emex australis". PLANTS Database. United States Department of Agriculture (USDA). Retrieved 18 January 2016.
^ "BSBI List 2007". Botanical Society of Britain and Ireland. Archived from the original (xls) on 2015-02-25. Retrieved 2014-10-17.

External links

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[1] NRCS. "Emex australis". PLANTS Database. United States Department of Agriculture (USDA). Retrieved 18 January 2016.

[BSBI07-2] "BSBI List 2007". Botanical Society of Britain and Ireland. Archived from the original (xls) on 2015-02-25. Retrieved 2014-10-17.

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