Accepted name: Dendrochilum sulfureum Schltr., Bot. Jahrb. Syst. 45(104): 8 (1911)

Subgenus – Dendrochilum


 
 

Synonyms

 

None

 

Origin in the Wild

 

Sumatra

 

Elevation in the Wild

 

1,200-1,250 metres

 

Habitat in the Wild

 

This species has been collected from Mount Merapi in Western Sumatra.

 

The Plants Description

 

The rhizome is pendent and branching. The pseudobulbs are shaped cylindrical and measure 2.3-2.5cm long and are yellow.  The pseudobulbs are spaced 2.5-4cm apart along the rhizome. The leaf blades are shaped lanceolate and have acute apices, although they can be bidentate. The leaves measure 8-14cm long and 0.8-1.8cm wide.

 

The Inflorescence

 

The peduncle is virtually non-existent; the flowers are borne almost to the base of the inflorescence. The inflorescence measures 10-15cm long.

 

The Flowers

 

The flower colour is sulphur-yellow and opens widely. The sepals are strap-shaped somewhat obtuse and measure 6mm long. The petals are shaped linear-falcate, almost spatulate; the petals are slightly shorter that the sepals. The labellum is strap-shaped and obtuse. The labellum is broadened basally and narrowed in its centre and again at its apex. There are two longitudinal keels from the base to the middle of the labellum. The column measures 2mm long and has a triangular shaped apical hood. The stelidia grow from just above the middle of the column and do not reach the apical hood.

 

Herbarium Specimens

 

Holotype

 

I could not locate the specimen

 

Other herbarium specimens

 

National Herbarium Netherlands (L)

 

Specimen L0322760

Specimen L0322761 

Specimen L0322762

Specimen L0322763

 

Ames

 

Specimen 98808 (drawing from type)

 

Scent

 

I could find no record.

 

Flowering Season

 

Flowering plants have been collected in the wild during January and September.

 

Culture

 

I do not think this species is in cultivation.

 

Similar species

 

Dendrochilum wichersii (see this page for the differences)

 

Additional Comments

 

Schlechter considered this species to be distinct from its small labellum in relation to the rest of the flower. Schlechter placed this species in section Dendrochilum.

 

Reference -

 

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

 

SCHLECHTER, R. 1911, Beiträge zur Kenntis der Orchideen Flora von Sumatra, Botanishe Jahrbücher fur Systematik Pflanzengeshicte und Pflanzengeograhie, number 104 page 1-61

 

World Checklist of Selected Plant Families. 24 August 2008. The Board of Trustees of the Royal Botanic Gardens, Kew. Published on the Internet; http://www.kew.org/wcsp/ accessed 24 August 2008.