Click on images to enlarge
infestation (Photo: Sheldon Navie)
habit (Photo: Sheldon Navie)
habit (Photo: Sheldon Navie)
close-up of once-compound leaf with elongated leaftlets and tendrils (Photo: Sheldon Navie)
small pea-shaped flowers (Photo: Sheldon Navie)
close-up of stem and hairless immature fruit (Photo: Sheldon Navie)
close-up of seeds (Photo: Steve Hurst at USDA PLANTS Database)
Scientific Name
Vicia tetrasperma (L.) Schreb.
Synonyms
Ervum tetraspermum L.
Family
Fabaceae (Queensland, the ACT, Victoria, Tasmania, and the Northern Territory)Fabaceae: sub-family Faboideae (New South Wales)Leguminosae (South Australia)Papilionaceae (Western Australia)
Common Names
four-seed vetch, four-seeded slender vetch, four-seeded vetch, lentil tare, lentil vetch, slender vetch, smooth tare, smooth vetch, sparrow vetch
Origin
Native to northern Africa, the Canary Islands, Europe, the middle-east, western Asia, northern Asia and the Indian Sub-continent.
Naturalised Distribution
Widely naturalised in south-eastern Australia (i.e. in some parts of eastern New South Wales, in Victoria and Tasmania, and in the southern and south-eastern parts of South Australia). Also occasionally naturalised in south-eastern Queensland, near Perth in south-western Western Australia, in the inland parts of southern New South Wales, and on Norfolk Island.
Widely naturalised elsewhere, including in New Zealand and large parts of North America (i.e. Canada and the USA).
Notes
Slender vetch (Vicia tetrasperma) is regarded as an environmental weed in Victoria.