Caularthron bicornutum (Hook.) Raf.

Family: Orchidaceae

Genus: Caularthron

Category: Houseplant


Winter bloomer, to spring. Blossoms in succession on erect spike, light fragrance. Linear leaves.

Warm temperatures, bright light to full, regular watering but allow to dry out in between.

From Orchid Album Epidendrum bicornutum is an evergreen species, with stem-like pseudobulbs about eight inches in height, furnished with light green foliage. The flower spikes grow about eighteen inches high, proceeding from the top of the stem when the growth is completed; they are upright, and produce twelve or more flowers, which are about two inches across, of good form, pure white, slightly spotted with lilac-purple towards the centre. It blooms during April and May, each flower lasting fresh for two or three weeks, and the spike continuing to open its buds in succession until the last has been developed.


Published in Fl. Tellur. 2: 41 in 1837.

Basionym Epidendrum bicornutum Hook. pictured in Orchid Album 4: 157 in 1885.

Synonym Diacrium bicornutum Benth.

Native to Trinidad and Tobago, northern South America and Colombia.

Hybridizing Characteristics: 

Blocks the expression of pigments producing pastel colored hybrids. Tend to bloom over a long period. (Hereditary Influences of the Cattleya Alliance -

Sources of Information

© 2010-12 Lisa J. Miner