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| August 2009 at Tsukuba Botanical Garden |
August 2009 at Tsukuba Botanical Garden |
August 2009 at Tsukuba Botanical Garden |
| 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. |
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| August 2009 at Tsukuba Botanical Garden |
August 2009 at Tsukuba Botanical Garden |
August 2009 at Tsukuba Botanical Garden |
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| August 2009 at Tsukuba Botanical Garden |
