Dioscorea collettii var. hypoglauca




Family Dioscoreaceae
Scientific name Dioscorea collettii Hooker f. var. hypoglauca (Palibin) C. T. Ting et al.
Synonyms Dioscorea hypoglauca Palibin; Dioscorea izuensis Akahori; Dioscorea kaoi Tang S. Liu & T. C. Huang; Dioscorea morsei Prain & Burkill; Dioscorea undulata R. Knuth
Common name (Japanese common name) izu-dokoro (イズドコロ, 伊豆野老 [meaning: Izu standing tokoro (tokoro = eatable roots)])
(English common name) none
Distribution (Japan) Honshu (Izu Peninsular)
(Other nations) China, Taiown
Habitat forest edge.
Chromosomal number 2n=20
Description Leaves 6-10cm long. Flowers pale yellow, male tepals 1mm long, female tepals 0.8mm long, flowering in July to August. Fruits 13mm long, 16mm wide. Vine. Perennial plants.
Reference Dioscorea collettii var. hypoglauca (Palib.) C.T. Ting, et al.
Dioscorea collettii J. D. Hooker
Chromosome numbers of some Japanese Dioscorea species
Phylogenetic relationship among the section Stenophora in the genus Dioscorea based on the analysis of nucleotide sequence variation in the phosphoglucose isomerase (Pgi) locus
Use of Ginkgo extract (US Patent 7078434/2006)
Preparation of Chinese herbal composite recipe used in horticulture (US Patent 7255885/2007)
Note Rare species.




August 2009
at Tsukuba Botanical Garden
August 2009
at Tsukuba Botanical Garden
August 2009
at Tsukuba Botanical Garden



August 2009
at Tsukuba Botanical Garden