Accepted name: Dendrochilum integrilabium Carr, Gard. Bull. Straits Settlem. 8: 85 (1935)

Subgenus – Platyclinis. Section – Platyclinis.


 
 
 

Synonyms

 

None

 

Origin in the Wild

 

Kalimantan, Sabah and Sarawak

 

Elevation in the Wild

 

300-1350 metres

(800 metres within Sarawak)

 

Habitat in the Wild

 

Jeffrey Wood wrote that this species has been collected in low open kerangas forest that is 5-10 meters high and on white sand over sandstone. This plant has also been collected from hill dipterocarp forest on wet and sandy soil. This plant has also been found on the trunks of isolated trees growing along hill ridges and hill tops. There has been a record of this plant growing in moss on a roadside cutting. The Kew isotype was found on a tree trunk two metres above ground in sandy forest.

 

This plant has been collected from Kalimantan Barat at Sungai Uut Labang.

 

In Sarawak this species has been found in the Belaga District along the Jelini River close to the junction of the Nawai River and on Mount Dulit. This species has also been found on Mount Temabok in the Tama Abu Range and the Upper Baram valley in the Marudi District.

 

In Sabah this plant has been found in the Crocker Range on the Kimanis road. The remaining collections in Sabah have occurred in the Sipitang District including, the trail from Long Pa Sia to Long Samado, 2km from the Sarawak boarder and also near the Malabid River. A further collection was made near the Pa Sia River, north west of Long Pa Sia.

 

The Plants Description

 

This species is mostly an epiphyte but has been found growing as a terrestrial. The rhizome branches and can grow to 10cm long. The pseudobulbs grow at an acute angle to the rhizome and are shaped fusiform or narrowly oblong. The pseudobulbs measure 0.5-1.5cm long and 0.4-0.5cm in diameter. The pseudobulbs are covered by 5-6 cataphylls while they are growing. The cataphylls disintegrate into persistent fibres as the pseudobulbs mature. The leaves are petiolate; the petiole measures 0.3-0.6cm long. The blades are shaped narrowly linear with obtuse apices minutely apiculate in their centre. The blades measure 3-8cm long and 0.28-0.4cm wide. The leaves are thin-textured and have 5 distinct nerves.

 

The Inflorescence

 

The inflorescence is synanthous. The peduncle is erect and measures 3-6cm long. The rachis is erect to slightly curving and measures 5-7.5cm long. The rachis is quadrangular in cross-section. The flowers alternate distichously and are spaced 1mm apart. There are 1-2 non-floriferous bracts at the base of the rachis.

 

The Flowers

 

The flowers have translucent pale green, pale yellowish green, pale greenish cream, cream sepals and petals. The labellum is pale green or pale yellow. The column is pale green, orange or salmon pink and the stelidia are white. The dorsal sepal is shaped oblong-elliptic with an acute apex. The dorsal sepal measures 2.3-3mm long and 0.7-0.9mm wide. The dorsal sepal has entire margins and is 1-veined. The lateral sepals are shaped slightly oblique ovate-elliptic with acute, sometimes somewhat falcate apices. The lateral sepals measure 2.3-2.8mm long and 0.8-0.9mm wide. The laterals have entire margins and are 1-veined with 2 lateral shorter veins. The petals are shaped linear and have acute apices. The petals measure 2-2.2mm long and 0.3-0.6mm wide. The petals have entire margins and are 1 veined. The labellum is entire, shortly clawed measuring 1.2-1.3mm long and 0.4-0.8m wide. The labellum is shaped oblong-elliptic with an obtuse apex that is recurved below its middle. There are 2 low keels that run ¾ of the labellum’s length. The keels join by a transverse ridge at the base of the labellum. The column is curved and measures 1.2-1.5mm long. The column foot is obscure. The apical hood is rounded-triangular and has an entire margin. The stelidia grow upwards from the base of the column and exceed the anther cap but not the column apex. The stelidia are shaped linear with subacute apices. The stelidia measure 1.1-1.4mm long.

 

Herbarium Specimens

 

Holotype

 

SING

 

 

Isotype

 

Royal Botanic Gardens Kew (K)

 

Specimen K000079115 (photo)

 

National Herbarium Netherlands (L)

 

Specimen L0003776 (photo)

 

AMES

 

Specimen 98768 (photo)

 

 

Other herbarium specimens

 

E

 

Royal Botanic Gardens Kew (K)

 

Specimen 49575.000

 

National Herbarium Netherlands (L)

 

Specimen L0269618

Specimen L0269619

Specimen L0269620

 

SAR

 

SING

 

AAU

 

KEP

 

SAN

 

BO

 

Scent

 

I could find no record

 

Flowering Season

 

Flowering plants have been collected in the wild from August to November.

 

Culture

 

I do not think this species is in cultivation

 

Similar Species

 

NA

 

Other Information

 

The epithet refers to the entire and simple shaped labellum.

 

Reference

 

BEAMAN, Teofila, WOOD, Jeffrey, BEAMAN, Reed, BEAMAN, John. 2001, Orchids of Sarawak, Natural History Publications Borneo, Kota Kinabalu, Malaysia.

 

WOOD, Jeffrey. Dendrochilum of Borneo, 2001. Natural History Publications (Borneo), Malaysia.

 

World Checklist of Selected Plant Families. 26 April 2009. The Board of Trustees of the Royal Botanic Gardens, Kew. Published on the Internet; http://www.kew.org/wcsp/ accessed 26 April 2009.