Accepted name: Dendrochilum incurvibrachium J.J.Sm., Bull. Jard. Bot. Buitenzorg, II, 25: 8 (1917)

Subgenus – Platyclinis. Section – Eurybrachium.


 

 

Synonyms

 

None

 

Origin in the Wild

 

Sumatra

 

Elevation in the Wild

 

I could find no record

 

Habitat in the Wild

 

This plant has been collected from Mount Dempo in Bengkulu Province.

 

The Plants Description

 

The rhizome grows up to 30cm long and branches with internodes of 3.8cm. The pseudobulbs are spaced 9cm apart along the rhizome, shaped cylindrical and measure 4.75cm long. The leaves are petiolate, the petioles measure 1.4cm long. The leaf blade is shaped oblong or lanceolate with a narrowed apex, the base is broader. The leaf blade measures 13.75cm long and 3.9cm wide, the leaves growing on the side branches are smaller.

 

The Inflorescence

 

The inflorescence is synanthous. The peduncle measures 6.5cm long. The rachis measures 20cm long. The flowers are spaced 2.25mm apart. The bracts are arranged in 2 rows and clasp the ovaries, concave, 3mm long and 1.6mm wide.

 

The Flowers

 

The flowers are small and open widely. The tepals are green; the labellum is striped yellow. The dorsal sepal is shaped lanceolate and has an obtuse apex. The dorsal sepal measures 3.5mm long and 1mm wide. The lateral sepals are shaped obliquely lanceolate and are keeled on the back. The lateral sepals measure 3.25mm long and 1mm wide. The petals are shaped obliquely oblong and have apiculate apices. The petals measure 3mm long and 1mm wide. The labellum is almost entire and measures 2.5mm long and 1.5mm wide. The labellum is shaped ovate is narrowed basally and wider apically. The labellum has two keels and is three veined. The column is short, broad and curved and measures 0.75mm long. The apical hood is shaped almost quadrangular and has a truncate apex with a dentate margin. The stelidia grow from the base of the column and equal the column apex. The stelidia are shaped lanceolate and falcate and have acute apices.

 

Herbarium Specimens

 

Holotype

 

I could not locate the specimen

 

Isotype

 

National Herbarium Netherlands, Leiden (L)

 

Specimen L0058436 (photo)

 

Scent

 

I could find no record.

 

Flowering Season

 

I could find no record.

 

Culture

 

I do not think this species is in cultivation

 

Similar Species

 

Dendrochilum teleense (see this page for the differences)

Dendrochilum vaginatum

Dendrochilum adpressibulbum (see this page for the differences)

 

Other Information

 

J.J Smith wrote that this species is related to Dendrochilum vaginatum but differs by its smaller labellum that is almost without side lobes and the longer stelidia with acute apices.

 

Reference

 

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

 

World Checklist of Selected Plant Families. 22 September 2008. The Board of Trustees of the Royal Botanic Gardens, Kew. Published on the Internet; http://www.kew.org/wcsp/ accessed 22 September 2008.