× ''Cattlianthe'', abbreviated ''Ctt.'' in the horticultural trade, is the Orchidaceae, orchid nothogenus for intergeneric hybrid grex (horticulture), greges containing at least one ancestor species from each of the two ancestral genera ''Cattleya'' and ''Guarianthe'', and from no other genera.
Since orchids in ''Guarianthe'' were placed in ''Cattleya'' before 2003, many orchids in × ''Cattlianthe'' were previously placed directly in ''Cattleya''.
Notable hybrids
Notable hybrids, known as Grex (horticulture), greges, include the following:
* ''Ctt.'' Jewel Box (formerly ''Slc''. Jewel Box), a Hybrid (biology), hybrid cross of ''Guarianthe aurantiaca'' and ''Cattleya'' Anzac. Its bifoliate pseudobulbs are about 4" tall and grow along a horizontal rhizome. A terminal inflorescence is produced from a sheath at the tip of newly matured pseudobulbs. ''Ctt''. Jewel Box averages 4.8 flowers per inflorescence and 9.2 cm (3.6 inches) natural spread. Flowers are slightly cupped, and vary from magenta to deep red, depending on growth conditions (light/temp) during bud development.
Gallery
File:Ctt_Portia_Gloriosa.png, ''Ctt.'' Portia 'Gloriosa'
(= ''Guarianthe bowringiana, Gur. bowringiana'' × Cattleya labiata, ''C. labiata'') (Formerly ''C. ''Portia)
File:Ctt_Chocolate_Drop_VQ_flowers.jpg, ''Ctt.'' Chocolate Drop 'Volcano Queen'
(= ''Cattleya guttata, C. guttata'' × ''Guarianthe aurantiaca, Gur. aurantiaca'')
(= ''Guarianthe aurantiaca, Gur. aurantiaca'' × ''Cattleya, C.'' Anzac 'Orchidhurst')
Formerly ''Slc.'' Jewel Box, ''Ctt.'' Jewel Box is one parent of ''Ctt.'' Hazel Boyd.
File:Ctt porcia Cannizzaro.jpg, Cattlinathe Porcis 'Cannizzaro '
A group of several Ctt. Porcia plants flowering.
References
{{DEFAULTSORT:Cattlianthe
Laeliinae
Orchid nothogenera