Dioscorea communis

Black Bryony, a reference photo
Photo: CC BY-SA 3.0 (licence)

Dioscorea communis or Tamus communis is a species of flowering plant in the yam family Dioscoreaceae and is commonly known as black bryony, lady's-seal or black bindweed.

From Wikipedia, under CC BY-SA 4.0.

Is it poisonous?

Considered toxic. Public sources list it as such; we have not verified this individually. All components of the plant, including the tubers, are poisonous due to saponin content, therefore it is not typically used internally. However, it has been used as a poultice for bruises and inflamed joints. It has… Never eat, touch or handle a wild plant, mushroom or animal on the strength of an identification; ask someone qualified.

Easily confused with

Classification

Kingdom
Plantae
Phylum
Tracheophyta
Class
Liliopsida
Order
Dioscoreales
Family
Dioscoreaceae
Species
Dioscorea communis

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More species

Black Bryony (Dioscorea communis) · B.inomen