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| May 2008 at Hokkaido University Botanical Garden |
May 2008 at Hokkaido University Botanical Garden |
May 2008 at Hokkaido University Botanical Garden |
| Family | Orchidaceae |
| Subfamily | Cypripedioideae (also placed in Cypripediaceae) |
| Tribe | Cypripedieae |
| Subtribe | Cypripediinae |
| Scientific name | Cypripedium macranthos Swartz |
| Synonyms | Cypripedium atsmori C. Morren; Cypripedium macranthon Swartz; Cypripedium macranthos Swartz forma albiflorum (Makino) Ohwi; Cypripedium macranthos Swartz var. albiflorum Makino; Cypripedium macranthos Swartz var. hotei-atsumorianum Sadovsky; Cypripedium macranthos Swartz var. speciosum (Rolfe) Koidzumi; Cypripedium macranthos Swartz var. speciosum (Rolfe) Koidzumi forma albiflorum (Makino) Ohwi; Cypripedium macranthos Swartz var. taiwanianum F. Maekawa; Cypripedium macranthum Swartz; Cypripedium speciosum Rolfe; Cypripedium speciosum Rolfe var. albiflorum Makino; Cypripedium taiwanianum Masamune; Cypripedium thunbergii Blume; Cypripedium thunbergii Blume forma albiflorum (Makino) Okuyama; Cypripedium thunbergii Blume forma flavidum Hiyama; Sacodon macranthon (Swartz) Rafinesque; Sacodon macranthos (Swartz) Rafinesque; Sacodon macranthum (Swartz) Rafinesque |
| Common name | (Japanese common name) atsumori-sou (アツモリソウ, 敦盛草 [meaning: Atsumori weed (Atsumori = a famous samurai in medieval Japan)]) |
| (English common name) none | |
| Distribution | (Japan) Hokkaido, Honshu, Shikoku |
| (Other nations) Russia, Korea, China, Eastern Europe | |
| Habitat | Subalpine mountane field. |
| Chromosomal number | 2n=22 |
| Description | Plants electing 25-40cm tall. Leaves 8-20cm long, 5-8cm wide. Flowers purple, pale purple or merely white (forma albiflorum) 3.5-5cm, flowering in May to July. Terrestrial. Perennial plants. |
| Reference | Cypripedium macranthum Sw. |
| Cypripedium macranthum Sw. | |
| Cypripedium macranthos | |
| Fertilizer for long term supply of plants with chelated micronutrients (US Patent 3980462/1976) | |
| Ion exchanger fertilizers (US Patent 4396412/1981) | |
| Genetic transformation of orchids (US Patent 6020538/1998) | |
| Bioadhesive compositions and methods for topical administration of active agents (US Patent 6562363/1998) | |
| Fast dissolving composition with prolonged sweet taste (US Patent 7122198/2000) | |
| Pharmaceutical compositions containing compounds with activity for the enhancement of absorption of active ingredients (US Patent 7026360/2000) | |
| Pharmaceutical with predetermined activity profile (US Patent 6458384/2001) | |
| Plant trichome gland specific promoter sequence (US Patent 6730826/2001) | |
| Compositions and methods to effect the release profile in the transdermal administration of active agents (US Patent 6638528/2002) | |
| Note | Rare species. |
| Many Japanese authors have distinguished Cypripedium macranthon Swartz var. macranthon (syn. Cypripedium macranthos Swartz var. hotei-atsumorianum Sadovsky) with Cypripedium macranthos Swartz var. speciosum (Rolfe) Koidzumi (syn. Cypripedium speciosum Rolfe). | |
| Photos of forma albiflorum below are those of an orchid which was cultivated by Mr. Shunji Mitsuhashi and displayed at the 40th Anniversary Exibision 2009 of Tokyo Wild Plants Society (Orchid and Lily Group) in Ikebukuro Seibu. |
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|---|---|---|
| May 2008 at Hokkaido University Botanical Garden |
May 2008 at Hokkaido University Botanical Garden |
May 2008 at Hokkaido University Botanical Garden |
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| forma albiflorum | forma albiflorum |
| May 2009 at Seibu Ikebukuro |
May 2009 at Seibu Ikebukuro |
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| var. hotei-atsumorianum | var. hotei-atsumorianum |
| (freak form) | (normal & freak form) |
| May 2010 at a wild plants nursery |
May 2010 at a wild plants nursery |
