Accepted name: Dendrochilum papillitepalum J.J.Wood, Orchid Rev. 103: 8 (1995 publ. 1994)



Subgenus – Platyclinis. Section – Platyclinis.


 
 

Synonyms

 

None

 

Origin in the Wild

 

Sarawak

 

Elevation in the Wild

 

530 metres

 

Habitat in the Wild

 

This species is only known from the type which was collected along the upper Sipayan River on Mount Pagon.

 

The plant was found amongst riparian forest and growing one metre above the ground (Wood 2001).

 

The Plants Description

 

The pseudobulbs cluster along a rhizome that can reach a length of 6cm. The pseudobulbs are shaped fusiform and measure 2.0-3.0cm long and 0.6-0.7 cm in diameter. The pseudobulbs are covered by c3 cataphylls while they are growing. The cataphylls disintegrate into persistent fibres as the pseudobulbs mature. The leaves are petiolate; the petiole measures 3.0-5.5cm long. The leaf blades are shaped narrowly elliptic-ligulate and have acute apices. The leaf blades measure 18.0-25.0cm long and 1.3-1.6cm wide. The leaves have 4-5 distinct nerves.

 

The Inflorescence

 

The peduncle is arching and measures 18.0-21.0cm long. The rachis is pendent and measures 34.0-42.0cm long. The flowers alternate distichously and are spaced 2.0-2.5mm apart. There are 4-7 appressed non-floriferous bracts at the base of the rachis.

 

The Flowers

 

The flowers are a pale green flushed with red. The column is reddish. The sepals and petals have scattered papillae on them. The dorsal sepal is shaped oblong-elliptic and has an acute apex. The dorsal sepal measures 4.0-4.1mm long and 1.1mm wide. The dorsal sepal is three veined and has an entire margin. The lateral sepals are shaped narrowly elliptic and have acute apices. The lateral sepals measure 4.0-4.1mm long and 1.1mm wide. The lateral sepals are three veined and have entire margins. The petals are shaped linear-elliptic and have acute apices. The petals measure 3.3mm long and 0.8-0.9mm wide. The petals are one veined and have entire margins. The labellum is stipitate to the column foot by a narrow claw, porrect, three veined and 3-lobed. The labellum measures 2.5-2.6mm long and 1.5mm wide. The labellum has serrate to lacerate margins on the side lobes and has a minutely erose margin on the mid-lobe. The side lobes are rounded, auriculate; the apical portion is shaped narrowly triangular-acuminate and has acute apices. The side lobes are distinctly shorter than the mid-lobe. The mid lobe is shaped oblong-ovate to ovate-elliptic and has an acute to shortly acuminate apex. There are two swollen basal flanges with a linear depression between them; the depression extends to the base of the mid-lobe. The column is straight and measures 1.6mm long. The column foot is obscure. The apical hood is prolonged into a truncate, obtuse and entire margin. The stelidia grow outwards from the just above the base of the column and are distinctly shorter than the column apex. The stelidia are spathulate, shaped auriculate and have rounded to truncate apices.

 

Herbarium Specimens

 

Holotype

 

Royal Botanic Gardens, Kew (K)

 

Specimen K000079131 (photo)

Specimen 60418.000

 

 

Isotype

 

KEP

 

SAR

 

Scent

 

I could find no record.

 

Flowering Season

 

The type specimen was collected during August.

 

Culture

 

I do not think this species is in cultivation

 

Similar Species

 

There are no similar species

 

Other Information

 

This species differs from all other Dendrochilum on Borneo by its auriculate stelidia and papillose sepals and petals. This species is closely related to Dendrochilum gracile.

 

The epithet refers to the papillae on the tepals.

 

Reference -

 

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

 

WOOD, Jeffrey. 1997, Orchids of Borneo volume 3. The Sabah Society, Kota Kinabalu, Malaysia.

 

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

 

World Checklist of Selected Plant Families. 24 July 2009. The Board of Trustees of the Royal Botanic Gardens, Kew. Published on the Internet; http://www.kew.org/wcsp/ accessed 24 July 2009.