| Family | Orchidaceae |
| Subfamily | Epidendroideae |
| Tribe | Podochilaeae |
| Subtribe | Eriinae |
| Scientific name | Conchidium japonicum (Maximowicz) S. C. Chen & J. J. Wood |
| Synonyms | Aeridostachya reptans (Kuntze) Rauschert; Callista reptans Kuntze; Dendrobium reptans Franchet & Savatier, not Swartz; Eria arisanensis Hayata; Eria hosokawae A. D. Hawkes & A. H. Heller; Eria japonica Maximowicz; Eria matsudae Hayata; Eria reptans (Kuntze) Makino; Eria reptans (Kuntze) Makino var. matsudae (Hayata) S. S. Ying |
| Common name | (Japanese common name) osa-ran (オサラン, 筬蘭 [meaning: reed orchid]) |
| (English common name) none | |
| Distribution | (Japan) Honshu (west of Central region), Shikoku, Kyushu, Okinawa |
| (Other nations) China, Taiwan | |
| Hanitat | Evergreen forest |
| Chromosomal number | 2n=38 |
| Description | Leaves 4-8cm long, 1-2cm wide. Flowers white ca. 1.5-2cm, flowering in July to August. Epiphyte on old trees or rocks. Decisuous in winter season. Perennial plants. |
| Reference | Conchidium japonicum (Maxim.) S.C. Chen & J.J. Wood |
| Conchidium japonicum (Maximowicz) S. C. Chen & J. J. Wood | |
| Conchidium japonicum (Maxim.) S. C. Chen & J. J. Wood |
| June 2010 at my home |
June 2010 at my home |
June 2010 at my home |
| (alba form) | (alba form) |
| July 2011 at Shintomi Kumin-kan |
July 2011 at Shintomi Kumin-kan |