| Family | Orchidaceae |
| Subfamily | Epidendroideae |
| Tribe | Dendrobieae (also placed in Podochilaeae) |
| Subtribe | Bulbophyllinae |
| Scientific name | Bulbophyllum drymoglossum Maximovicz ex M. Okubo |
| Synonyms | Bulbophyllum drymoglossum Maximovicz ex M. Ôkubo forma atrosanguiflorum Masamune & Satomi; Bulbophyllum somai Hayata |
| Common name | (Japanese common name) mamedzuta-ran (マメヅタラン, 豆蔦蘭 [meaning: mamedzuta orchid (mamedzuta = Lemmaphyllum microphyllum)]) |
| (English common name) none | |
| Distribution | (Japan) Honshu (west of Kanto region), Shikoku, Kyushu, Okinawa |
| (Other nations) Korea, China | |
| Habitat | Mountane forest |
| Chromosomal number | 2n=40 |
| Description | Leaves 7-13mm long, 5-10mm wide. Flowers pale yellow or merely red (forma atrosanguiflorum) sepals 7-8mm long, side petals 3-4mm long, flowering in May to June. Epiphyte on trunk of old trees or lithophyte on rocks. Perennial plants. |
| Reference | Bulbophyllum drymoglossum Maxim. 1887 |
| Bulbophyllum drymoglossum Maxim. ex M. Okubo |
| May 2009 at my home |
May 2009 at my home |