| Family | Orchidaceae |
| Subfamily | Epidendroideae |
| Tribe | Podochilaeae |
| Subtribe | Eriinae |
| Scientific name | Pinalia ovata (Lindley) W. Suarez & Cootes |
| Synonyms | Eria bidentata Nakai; Eria luchuensis Yatabe; Eria nudicaulis Hayata; Eria ovata Lindley; Eria ovata Lindley var. retroflexa (Lindley) Garay & H. R. Sweet; Eria retroflexa Lindley; Pinalia retroflexa (Lindley) Kuntze |
| Common name | (Japanese common name) ryukyu-sekkoku (リュウキュウセッコク, 琉球石斛 [meaning: Okinawa sekkoku (sekkoku = Dendrobium moniliforme)]), fusinashi-osaran (フシナシオサラン, 節無筬蘭 [meaning joint-less osa-ran (osa-ran = Eria japonica)]) |
| (Chinese common name) da jiao tong (大脚筒) | |
| (English common name) none | |
| Distribution | (Japan) Okinawa (Ishigaki Island, Iriomote Island) |
| (Other nations) China, Taiwan | |
| Hanitat | Evergreen forest |
| Chromosomal number | 2n=36, 38, 40, 44 |
| Description | Bulbs 10-20cm long. Leaves 12-17cm long, ca. 3-4cm wide. Flowers pale yellow ca. 2-2.5cm across, inflorescences 10-25cm long, flowering in June to July. Epiphyte on old trees or rocks. Perennial plants. |
| Reference | Pinalia ovata (Lindl.) W. Suarez & Cootes |
| Pinalia ovata (Lindley) W. Suarez & Cootes | |
| Pinalia ovata (Lindl.) W. Suarez & Cootes | |
| Note | Rare species. |
| July 2009 at Koishiwaka Botanical Garden |
July 2009 at Koishiwaka Botanical Garden |
July 2009 at Koishiwaka Botanical Garden |
| July 2009 at Koishiwaka Botanical Garden |