Accepted name: Dendrochilum teleense J.J.Wood & J.B.Comber, Lindleyana 10: 65 (1995)

Subgenus – Platyclinis. Section – Eurybrachium.


 
 

Synonyms

 

None

 

Origin in the Wild

 

Sumatra

 

Elevation in the Wild

 

1650 metres

 

Habitat in the Wild

 

This species was collected from Tele in Tapanuli Utara in North Sumatra.

 

The notes on the Isotype state “Primary forest c. 20m high, with much undergrowth of small palms and pole tree. Soil deep whitish clay with c. 40cm raw humus. Plateau slightly undulating. Epiphyte on big tree branch”

 

The Plants Description

 

The rhizome is long and branching. The pseudobulbs are spaced 3.75cm apart. The young pseudobulbs are covered with 3 imbricate cataphylls. The pseudobulbs are shaped cylindrical, terete and are an orange colour. The pseudobulbs measure 2.5cm long and 3.75mm in diameter. The pseudobulbs are held at an acute angle to the rhizome. The leaves are petiolate, the petiole measures 1cm long. The leaf blades are shaped lanceolate and have acute apices. The leaf blades measure 13cm long and 1.3cm wide.

 

The Inflorescence

 

The inflorescence is synanthous. The peduncle is filiform and measures 7.5cm long. The rachis measures 17cm long. The flowers are spaced 3mm apart.

 

The Flowers

 

Up to 55 flowers have been noted growing on an inflorescence. The flowers open widely and are a translucent white colour; the labellum is citron-yellow to brownish-yellow. The keels and front the labellum lobes are brownish. The dorsal sepal is shaped narrowly triangular and has an acute apex that is recurved. The dorsal sepal measures 6.2mm long and 1.4mm wide. The lateral sepals are similar but measure 1.6mm wide. The petals are shaped almost linear and have acute apices. The petals measure 5.8mm long and 1.2mm wide. The labellum is entire but the hypochile and epichile are distinct. The hypochile is shaped quadrangular and measures 1.3mm long and 1.8mm wide. The epichile is shaped lanceolate and has an acuminate or acute apex. The epichile measures 4mm long and 1.9mm wide. There are two raised keels which are transversely joined together at the base of the labellum. There are two oval discs between the keels. The column is short and measures 1.36mm long. The apical hood is tridentate; its middle dentate (tooth) is shorter. The stelidia grow from the middle of the column and are equal to the apical hood.

 

Herbarium Specimens

 

Holotype

 

I could not locate the specimen

 

Isotype

 

Royal Botanic Gardens, Kew (K)

 

Specimen K000078235 (photo)

 

Scent

 

I could find no record.

 

Flowering Season

 

The Isotype was collected in the wild during December.

 

Culture

 

I do not think this species is in cultivation

 

Similar Species

 

Dendrochilum incurvibrachium

Dendrochilum vaginatum

 

Other Information

 

This species is similar to Dendrochilum incurvibrachium but differs by its acute not obtuse apex on the dorsal sepal, petals that are narrowed basally; tridentate not irregularly toothed apical hood and stelidia that grow from the middle of the column not the base.

 

Reference

 

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

 

World Checklist of Selected Plant Families. 16 October 2008. The Board of Trustees of the Royal Botanic Gardens, Kew. Published on the Internet; http://www.kew.org/wcsp/ accessed 16 October 2008.