Dioscorea japonica
East Asian Mountain Yam, Japanese Yam
Botanical Data
- Taxonomic Rank: Species
- Botanical Family: Dioscoreaceae
- WCVP Morphological Data: Recorded natively as a climbing tuberous geophyte.
Find Reference Images
Google-powered external web search for Dioscorea japonica
Dioscorea japonica (commonly known as East Asian mountain yam or Japanese yam) is a climbing plant within the Dioscoreaceae family. It is found natively in Temperate Asia and Tropical Asia. Within its native range, this species is most commonly linked to subtropical conditions. There are naturally occurring varieties of this species, which are linked below.
Macro Climate
Subtropical
Plant Type
Climber / Vine
Plant Type
Bulb
Native Range
Continents (WGSRPD)
ASIA-TEMPERATE, ASIA-TROPICAL
Regions (WGSRPD)
China, Eastern Asia, Indian Subcontinent
Botanical Countries (WGSRPD L3)
Assam, China South-Central, China Southeast, Japan, Korea, Taiwan
Introduced Range
An “Introduced” distribution indicates that the plant is recorded outside its native range in that region as a result of deliberate or accidental human introduction. Introduced records may include casual, naturalized or invasive populations, but do not include plants that are only cultivated or planted without self-sustaining populations.
Botanical Countries (Non-Native)
Ogasawara-shoto
Subspecies, Varieties & Forms