Accepted name: Dendrochilum exalatum J.J.Sm., Recueil Trav. Bot. Néerl. 1: 77 (1904)

Subgenus – Platyclinis. Section – Platyclinis.





Origin in the Wild


Sumatra and Java


Elevation in the Wild


1300 – 2000 metres on Java

Elevation not known on Sumatra


Habitat in the Wild


The Sumatran habitat is not known. On Java this Dendrochilum is found in the wet forests of the west.


The Plants Description


The pseudobulbs are shaped almost terete and measure 1.25-2cm long. The leaves are petiolate; the petiole measures 1.8cm long. The leaf blades are shaped linear and have obtuse to apiculate apices. The leaf blades measure 9-14cm long and 0.4-1.0cm wide.


Herbarium Specimens


I could not locate any herbarium specimens




I could find no record


Flowering Season


This species flowers in the wild in the rainy season from October to December.


The Inflorescence


The inflorescence is synanthous and appears when the pseudobulb is very young. The peduncle measures 9cm long and the rachis measures 7cm long.


The Flowers


Approximately 20 flowers grow on an inflorescence (Comber 1990 and 2001). The flowers are generally white but can be pale yellow or green. The sepals are shaped lanceolate and have acute or acuminate apices. The sepals measure 5.0-6.0mm long and 1.7mm wide. Their margins are entire. The petals are shorter and have erose margins on the apical half. The labellum is 3-lobed and measures 4mm long and 2.75mm wide. The side lobes are shaped ovate and have obtuse apices. The side lobe margins are dentate. The mid-lobe measures 2.7mm long, is shaped triangular-ovate and has erose margins. There are 2 ridges between the side lobes at the base of the labellum. The column is somewhat curved. The apical hood is emarginate. There are either no stelidia or minute basal teeth protruding from the column.




I do not think this species is in cultivation


Similar Species


Dendrochilum kingii


Other Information


Jim Comber wrote that this species is similar to Dendrochilum kingii but differs by its smaller flowers.




COMBER, J.B. Orchids of Java, 1990, Royal Botanic Gardens Kew, UK


COMBER, J.B. Orchids of Sumatra, 2001, Royal Botanic Gardens Kew


World Checklist of Selected Plant Families. 12 November 2008. The Board of Trustees of the Royal Botanic Gardens, Kew. Published on the Internet; accessed 12 November 2008.