Emex
Encyclopedia
Emex is a genus of annual herbaceous plants of the Polygonaceae
family. There are only two species in this genus: Emex australis
, commonly known as doublegee or three-cornered jack, which is a weed in Australia
, and Emex spinosa
or lesser jack.
Polygonaceae
Polygonaceae is a family of flowering plants known informally as the "knotweed family" or "smartweed family"— "buckwheat family" in the United States. The name is based on the genus Polygonum and was first used by Antoine Laurent de Jussieu in 1789 in his book, Genera Plantarum. The name refers...
family. There are only two species in this genus: Emex australis
Emex australis
Emex australis, commonly known as doublegee or three-cornered jack, is a herbaceous plant of the Polygonaceae. It is a weed in South Africa and Australia.-External links:***...
, commonly known as doublegee or three-cornered jack, which is a weed in Australia
Australia
Australia , officially the Commonwealth of Australia, is a country in the Southern Hemisphere comprising the mainland of the Australian continent, the island of Tasmania, and numerous smaller islands in the Indian and Pacific Oceans. It is the world's sixth-largest country by total area...
, and Emex spinosa
Emex spinosa
Emex spinosa, commonly known as lesser jack, is an annual herbaceous plant of the Polygonaceae. It originates in the warmer parts of the old world, but now has spread with man to other places. It is common in disturbed areas, aspecially in sandy soils...
or lesser jack.