Cattleya warscewiczii (The "Warscewicz's Cattley's orchid"), a labiate Cattleya, is a species of orchid.
It was first collected by Józef Warszewicz in Colombia in 1848-49 and formally described by Heinrich Gustav Reichenbach in 1855. C. warscewiczii exhibits a typical Cattleya sympodial habit. Pseudobulbs are 8-16" (20-40 cm) long, unifoliate, cylindrical or cigar-shaped, grooved. Flowers are 7-11" (17.5-27.5 cm) across, largest in the genus, showy, fragrant. In culture the flowering is in summer on that year`s spring growth. Strong light and good air movement are required.
C. warscewiczii hybridizes naturally with C. aurea / dowiana[nb 1], producing C. x hardyana. C. warscewiczii has also been used extensively in Cattleya hybridization, to produce large-flowered hybrid Cattleyas.
- C. aurea has now been established to be a separate species from C. dowiana, but has occasionally been considered a subspecies in the past. C. aurea is a Colombian species, like C. warscewivzii, while C. dowiana is found in Costa Rica and Panama.
- The Showy Cattleya, Queen of the Orchids (Beginners` Handbook - XV) American Orchid Society Bulletin Vol.25, No.2 p.159 (1956) 
- I. F. La Croix. The New Encyclopedia of Orchids: 1500 Species in Cultivation (Timber Press, 2008), p.92
- page 251 of L. P. Felix and M. Guerra: "Variation in chromosome number and the basic number of subfamily Epidendroideae (Orchidaceae)" Botanical Journal of the Linnean Society 163(2010)234—278. The Linnean Society of London. Downloaded October 2010 from http://onlinelibrary.wiley.com/doi/10.1111/j.1095-8339.2010.01059.x/abstract
- Van den Berg, Cassio. "Reaching a compromise between conflicting nuclear and plastid phylogenetic trees: a new classification for the genus Cattleya (Epidendreae; Epidendroideae; Orchidaceae)." Phytotaxa 186.2 (2014): 75-86. 
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