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.
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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
Plants flagged as 'Introduced' have been transported outside their native historical range by human activity. While many are common ornamentals, some may become naturalized or invasive in local environments. Local ecological guidelines require verification prior to planting.
Botanical Countries (Non-Native)
Ogasawara-shoto
Subspecies, Varieties & Forms