| Family | Orchidaceae | 
| Subfamily | Epidendroideae | 
| Tribe | Cymbidieae | 
| Subtribe | Cymbidiinae | 
| Scientific name | Cymbidium dayanum Reichenbach f. | 
| Synonyms | Cymbidium acutum Ridley; Cymbidium alborubens Makino; Cymbidium angustifolium Ames & C. Schweinfurth; Cymbidium dayanum Reichenbach f. subsp. leachianum (Rchb. f.) S. S. Ying; Cymbidium dayanum Reichenbach f. var. albiflorum S. S. Ying; Cymbidium dayanum Reichenbach f. var. austrojaponicum Tuyama; Cymbidium dayanum Reichenbach f. var. leachianum (Reichenbach f.) S. S. Ying; Cymbidium eburneum Lindley var. austrojaponicum (Tuyama) M. Hiroe; Cymbidium eburneum Lindley var. dayanum Hooker f.; Cymbidium leachianum Reichenbach f.; Cymbidium poilanei Gagnepain; Cymbidium pulcherrimum Sander; Cymbidium simonsianum King & Pantling; Cymbidium sutepense Rolfe ex Downie | 
| Common name | (Japanese common name) hetsuka-ran (ヘツカラン, 辺塚蘭 [meaning: Hetsuka orchid (Hetsuka = a local area name in Kagoshima prefecture)]) | 
| (English common name) Day's Cymbidium | |
| Distribution | (Japan) Kyushu (Kagoshima prefecture), Okinawa | 
| (Other nations) Southern China, Taiwan, Philippines, Vietnam, Malaysia, Indonesia (Sumatra and the Celebes), India | |
| Chromosomal number | unknown | 
| Description | Leaves 30-50cm long, 10-13mm wide. Flowers sepals 3-3.2cm long, flowering in October to November. Epiphytic. Perennial plants. | 
| Reference | Cymbidium dayanum Rchb.f. 1869 | 
| Cymbidium dayanum Rchb. f. | |
| Note | Photos at lower line are those of an orchid which was cultivated by Madame Akemi Hashimoto and displayed in the Orchid Show 2006 at Tsukuba Botanical Garden. | 
| October 2006 at Tsukuba Botanical Garden  | 
      December 2005 at Koishikawa Botanical Garden  | 
      October 2006 at Tsukuba Botanical Garden  | 
    
| October 2006 at Tsukuba Botanical Garden  | 
      October 2006 at Tsukuba Botanical Garden  |