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| June 2009 at Karuizawa Botanical Garden |
June 2009 at Karuizawa Botanical Garden |
June 2009 at Karuizawa Botanical Garden |
| Family | Apocynaceae (also placed in Asclepiadaceae) |
| Subfamily | Asclepiadoideae |
| Tribe | Asclepiadeae |
| Subtribe | Tylophorinae |
| Scientific name | Vincetoxicum atratum (Bunge) C. Morren & Decaisne |
| Synonyms | Alexitoxicon atratum (Bunge) Pobedimova; Antitoxicum atratum (Bunge) Pobedimova; Cynanchum atratum Bunge; Vincetoxicum atratum (Bunge) C. Morren & Decaisne forma viridescens H. Hara; Vincetoxicum multinerve Franchet & Savatier |
| Common name | (Japanese common name) funabara-sou (フナバラソウ, 船腹草 [meaning: weed which has belly (of a ship) shaped fruits]) |
| (English common name) none | |
| Distribution | (Japan) Hokkaido, Honshu, Shikoku, Kyushu |
| (Other nations) Russia (Far East), Korea, China | |
| Habitat | Mountane field. |
| Chromosomal number | 2n=22 |
| Description | Plants electing 40-80cm tall. Leaves 6-14cm long, 3-8cm wide. Flowers dark purple or merely green (forma viridescens) corollas ca. 12-14mm across, flowering in June. Fruits 7-8cm long. Perennial plants. |
| Reference | Vincetoxicum atratum (Bunge) C. Morren & Decne. |
| Cynanchum atratum Bunge | |
| Cynanchum atratum Bunge | |
| Tylophorine analogs as antitumor agents (WIPO Patent Application WO/2007/081540) | |
| Note | Relatively rare. |
| Flora of China has described that Vincetoxicum multinerve Franchet & Savatier ex Maximovicz (Syn. Cynanchum multinerve (Franchet & Savatier) Matusmura) is a synonym of Vincetoxicum atratum (Bunge) C. Morren & Decaisne. |
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| June 2009 at Karuizawa Botanical Garden |
June 2009 at Karuizawa Botanical Garden |
June 2009 at Karuizawa Botanical Garden |
