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| June 2009 at Mt. Tsukuba |
June 2009 at Mt. Tsukuba |
June 2009 at Mt. Tsukuba |
| Family | Dioscoreaceae |
| Scientific name | Dioscorea gracillima Miquel |
| Synonyms | [Dioscorea salicifolia Blume; Dioscorea sarawakensis R. Knuth] |
| Common name | (Japanese common name) tachi-dokoro (タチドコロ, 立野老 [meaning: standing tokoro (tokoro = eatable roots)]) |
| (English common name) none | |
| Distribution | (Japan) Honshu, Shikoku, Kyushu |
| (Other nations) China | |
| Habitat | Mountane forest edge. |
| Chromosomal number | 2n=20, 40 |
| Description | Leaves 8-14cm long. Flowers yellow, male tepals 1.5mm long, female tepals 2.0mm long, flowering in June to July. Fruits 15-16mm long. Vine. Perennial plants. |
| Reference | Dioscorea gracillima Miq. |
| Dioscorea gracillima Miquel | |
| Phylogenetic relationship among the section Stenophora in the genus Dioscorea based on the analysis of nucleotide sequence variation in the phosphoglucose isomerase (Pgi) locus | |
| Chromosome numbers of some Japanese Dioscorea species |
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| June 2009 at Mt. Tsukuba |
June 2009 at Mt. Tsukuba |
June 2009 at Mt. Tsukuba |
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| June 2009 at Mt. Tsukuba |
