Accepted name: Dendrochilum ophiopogonoides J.J.Sm., Bull. Jard. Bot. Buitenzorg, III, 5: 45 (1922)

Dendrochilum ophiopogonoides var. merapiense J.J.Sm., Bull. Jard. Bot. Buitenzorg, III, 5: 46 (1922).

 

Dendrochilum ophiopogonoides var. korintjiense J.J.Sm., Bull. Jard. Bot. Buitenzorg, III, 12: 110 (1932).


Subgenus – Platyclinis. Section – Eurybrachium.


 
 

Synonyms

 

None

 

Origin in the Wild

 

Sumatra

 

Elevation in the Wild

 

1800 – 2450 metres

 

Habitat in the Wild

 

Jim Comber wrote that this species has been found on Mount Talang growing in brushwood.

 

Dendrochilum ophiopogonoides var. korintjiense has been collected on Mount Kerinci at 1800 metres.

 

Dendrochilum ophiopogonoides var. merapiense has been collected on Mount Merapi.

 

The Plants Description

 

The rhizomes branch freely. The pseudobulbs measure 3-4cm long. The leaves are petiolate, the petiole measures 1.5cm long. The leaf blades are shaped linear and have apiculate apices. The leaf blades measure 13.5-16cm long and 6-7.3mm wide.

 

The Inflorescence

 

The inflorescence is synanthous and grows from the new growths at the same time that the leaves start developing. The peduncle measures 16cm long. The rachis measures 8-11.5cm long. The flowers are spaced 3mm apart.

 

The Flowers

 

The flowers spread widely and measure 8.5mm across. The flowers are white to light green. The sepals are concave, shaped lanceolate and have acute apices. The sepals measure 5mm long and 1.5mm wide. The petals are shaped obliquely lanceolate and have acute apices.  The petals measure 4.6mm long and 1mm wide. The upper margins of the petals are erose. The labellum is 3-lobed. The side lobes are shaped oblong and have almost truncate apices, their outer margins are erose. The mid-lobe is a rhomboid shape and is narrower at its base, its apex is recurved and apiculate, and the apical margin is erose. There are 2 keels that are joined in a transverse ridge at the base of the labellum. The column measures 1.5mm long. The apical hood is quadrangular and has a truncate apex. The stelidia emerge from the middle of the column and reach the column apex. The stelidia are shaped obliquely oblong and have acute apices.

 

Herbarium Specimens

 

Holotype

 

I could not locate the type

 

 

Isotype

 

National Herbarium Netherlands (L)

 

Specimen L0058680

Specimen L0058681 (Dendrochilum ophiopogonoides var. korintjiense)

Specimen L0058682 (Dendrochilum ophiopogonoides var. merapiense)

 

Syntype

 

National Herbarium Netherlands (L)

 

Specimen L0058674 (Dendrochilum ophiopogonoides var. korintjiense)

 

Unknown type material

 

Royal Botanic Gardens, Kew (K)

 

Specimen K000078886 (photo) (Dendrochilum ophiopogonoides var. korintjiense)

 

 

Other herbarium specimens

 

National Herbarium Netherlands (L)

 

Specimen L0269676 (Dendrochilum ophiopogonoides var. korintjiense)

 

Scent

 

I could find no record

 

Flowering Season

 

Flowering plants have been collected in the wild during November.

 

Flowering plants of Dendrochilum ophiopogonoides var. korintjiense have been collected in the wild during April.

 

Flowering plants of Dendrochilum ophiopogonoides var. merapiense have been collected in the wild during September.

 

Culture

 

I do not think this species is in cultivation

 

Similar Species

 

Dendrochilum cornutum

Dendrochilum fuscescens

Dendrochilum dentiferum

Dendrochilum rigidulum

Dendrochilum fimbrilobum

Dendrochilum ramosissimum

 

Other Information

 

J.J. Smith mentioned that this species is an ally to Dendrochilum cornutum but has well developed side lobes.

 

The variety var. merapiense differs by its different shaped labellum. The labellum is shaped ovate with the side lobes touching it. The stelidia are shorter.

 

The variety var. korintjiense differs by its different shaped labellum. The mid lobe is almost quadrangular.

 

Reference

 

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

 

World Checklist of Selected Plant Families. 08 November 2008. The Board of Trustees of the Royal Botanic Gardens, Kew. Published on the Internet; http://www.kew.org/wcsp/ accessed 08 November 2008.