Accepted name: Dendrochilum bandaharaense J.J.Wood & J.B.Comber, Lindleyana 10: 57 (1995)

Subgenus – Platyclinis. Section – Platyclinis.

 

 

 

Synonyms

 

None

 

Origin in the Wild

 

Sumatra

 

Elevation in the Wild

 

2600 – 2700 metres

 

Habitat in the Wild

 

This species has been recorded as growing in Aceh Province in the Mount Leuser Nature Reserve at camp 6 on Mount Bandahara. De Wilde’s field notes state that it was an epiphyte on a mossy tree stump.

 

The Plants Description

 

The rhizomes branch and have a creeping habit. The pseudobulbs are spaced c1.2cm apart. The pseudobulbs are shaped ovate-fusiform. The pseudobulbs measure 1.5-2.2cm long and 0.6cm in diameter. The cataphylls that surround the immature pseudobulbs disintegrate into persistent fibres as the pseudobulbs mature. The leaves are petiolate, the petiole measures 0.6cm long. The leaf blades are shaped lanceolate and have acute to acuminate apices. The leaf blades measure 8-11.5cm long and 1.8cm wide.

 

The Inflorescence

 

The inflorescence is synanthous and grows with the new growth. The peduncle is shorter than the rachis, the peduncle only measures c6cm long compared to an overall inflorescence length of 22cm. The flowers are spaced c4mm apart.

 

The Flowers

 

Approximately 40 flowers are recorded growing on an inflorescence. The flower colour is pale creamy salmon. The dorsal sepal is shaped lanceolate and has an acuminate to acute apex. The dorsal sepal measures 7.85mm long and 2mm wide. The lateral sepals are shaped narrowly triangular and have acute apices. The lateral sepals measure 8.57mm long and 1.86mm wide. The petals are shaped sublinear and have acute apices. The petals measure 6.3mm long and 1.28mm wide. The labellum is entire although there is a distinct difference between the epichile and hypochile. The labellum is shaped lanceolate and has an acute apex. The labellum measures 3.92mm long and 1.67mm wide. There are 3 keels that grow from the base of the hypochile, the 2 lateral keels are shorter and slightly curve. The column is 2.7mm long; the column has a very short column foot. The apical hood has a truncate apex and irregular dentate margins. The stelidia grow from the middle of the column and just reach the apical hood. The stelidia are shaped linear and are unequally bilobed at their apices.

 

Herbarium Specimens

 

Holotype

 

National Herbarium Netherlands, Leiden (L)

 

Specimen L0058457

 

Isotype

 

Kew Botanical Gardens (K)

 

Specimen K000078890

 

Scent

 

I could find no record

 

Flowering Season

 

Flowering plants have been collected in the wild during June

 

Culture

 

I do not think this species is in cultivation

 

Similar Species

 

Dendrochilum duplicibracium

 

Other Information

 

Jim Comber wrote that this species is similar to Dendrochilum duplicibracium but differs by its larger ovate-fusiform shaped pseudobulbs, narrower leaves with short petioles and a labellum with an acute apex.

 

Reference

 

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

 

World Checklist of Selected Plant Families. 18 November 2008. The Board of Trustees of the Royal Botanic Gardens, Kew. Published on the Internet; http://www.kew.org/wcsp/ accessed 18 November 2008.