| Tribe | Epidendreae |
| Subtribe | Laeliinae |
| Scientific name | Cattleya walkeriana Gardner var. semialba |
| Synonyms | Cattleya bulbosa Lindley; Cattleya gardneriana Reichenbach f.; Cattleya princeps Barbosa-Rodrigues; Cattleya schroederiana Reichenbach f.; Cattleya walkeriana Gardner var. bulbosa (Lindley) Fowlie; Cattleya walkeriana Gardner var. princeps L. C. Menezes; Epidendrum walkerianum (Gardner) Reichenbach f. |
| Distribution | Brazil |
| Reference | Cattleya walkeriana Gardner 1843 |
| Cattleya walkeriana SemiAlba |
| December 2006 at Tsukuba Botanical Garden |