Accepted name: Dendrochilum megalanthum Schltr., Repert. Spec. Nov. Regni Veg. 11: 141 (1912)

Subgenus – Platyclinis. Section – Platyclinis.


 
 The text is below the pictures
 
This photo was taken by Peter O'Byrne and is reproduced courtesy of Swiss Orchid Foundation at the Herbarium, Jany Renz. http://orchid.unibas.ch
This photo was taken by Peter O'Byrne and is reproduced courtesy of Swiss Orchid Foundation at the Herbarium, Jany Renz. http://orchid.unibas.ch
This drawing was by Schlechter
This photo was taken by Thilo Nordhausen and is reproduced courtesy of Swiss Orchid Foundation at the Herbarium, Jany Renz. http://orchid.unibas.ch
This photo was taken by Thilo Nordhausen and is reproduced courtesy of Swiss Orchid Foundation at the Herbarium, Jany Renz. http://orchid.unibas.ch
 

Synonyms

 

None

 

Origin in the Wild

 

Sumatra

 

Elevation in the Wild

 

750 - 1800 metres

 

Habitat in the Wild

 

This species has been collected from many locations on Sumatra including, Bukit Gombak, Laras Talang and Bandar Baru on the Medan to Berastagi road.

 

This species is found on tree trunks, branches and even on fallen trees. It is commonly seen along exposed ridge tops and on stunted trees.

 

The Plants Description

 

This species can grow to a height of 30cm. The pseudobulbs cluster on a short rhizome. The pseudobulbs are shaped cylindrical-conical and measure up to 4cm long and 0.7cm in diameter. The leaves are petiolate; the petiole measures 3cm long. The leaf blades are shaped lanceolate-elliptic.

 

The Inflorescence

 

The inflorescence is synanthous and grows at the same as the leaves. The peduncle is erect and measures 10cm long. The rachis is nodding to pendent and measures approximately 20cm long.

 

The Flowers

 

Between 15 and 25 flowers are recorded as growing on an inflorescence. The flowers are yellowish-white with brown markings on the labellum. The dorsal sepal is shaped lanceolate and has an acute apex. The dorsal sepal measures 1.25cm long. The lateral sepals are shaped oblique and have acute apices. The lateral sepals measure 1.25cm long. The petals are shaped narrowly lanceolate, oblique and have acute apices. The labellum is 3-lobed.  The side lobes are small, shaped narrowly lanceolate and have acute apices.  The mid-lobe is shaped broadly oval and has an apiculate apex. The side lobes have finely erose margins; the inner margins of the side lobes are denticulate. The hypochile has erose to serrated margins. There are 2 keels that run from the base of the hypochile and run nearly the whole length of the labellum. The column is curved and measures 6mm long. The stelidia grow from just above the middle of the column and just reach the column apex. The stelidia are shaped lanceolate and have acute apices.

 

Herbarium Specimens

 

Holotype

 

I could not locate the specimen

 

 

Other herbarium specimens

 

National Herbarium Netherlands (L)

 

Specimen L0322641

 

AMES

 

Specimen 98783 (drawing of the type)

 

 

Scent

 

I could find no record

 

Flowering Season

 

Flowering plants have been collected in the wild during November. This species particularly flowers during July and October (O'Byrne 2001).

 

Culture

 

I do not think this species is in cultivation

 

Similar Species

 

Dendrochilum gracile

Dendrochilum krauseanum

Dendrochilum flos-susanne (see this page for the differences)

 

Other Information

 

Jim Comber wrote that this species flower structure is similar to Dendrochilum krauseanum and Dendrochilum gracile.

 

Reference -

 

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

 

O'BYRNE, Peter. 2001, An A to Z of South East Asian Orchids, The Orchid Review Vol 109 n 1241 Sept-Oct p280-285

 

World Checklist of Selected Plant Families. 25 November 2008. The Board of Trustees of the Royal Botanic Gardens, Kew. Published on the Internet; http://www.kew.org/wcsp/ accessed 25 November 2008.