Accepted name: Dendrochilum amesianum H.A.Pedersen, Nordic J. Bot. 15: 381 (1995 publ. 1996)



Subgenus – Platyclinis. Section – Platyclinis.

 

 

 

Synonyms

 

None

 

Origin in the Wild

 

Mindanao

 

Elevation in the Wild

 

25-250 metres

 

Habitat in the Wild

 

This species has been collected on Aras-Asan in Surigao del Sur Province on Mindanao. The holotype was collected in a logging area.

 

The Plants Description

 

The pseudobulbs cluster on a short rhizome and are shaped fusiform. The pseudobulbs measure 4.0-5.8cm long and 0.4-0.9cm in diameter. The pseudobulbs are covered with 3-4 cataphylls when they are growing; the cataphylls disintegrate into persistent fibres as the pseudobulbs mature. The leaves are petiolate; the petiole measures 2.1-6.3cm long. The leaf blades are shaped linear-lanceolate with obtuse to rounded apices. The blades measure 12.1-22.4cm long and 1.7-3.2cm wide. The blades are thin textured and have 7-9 distinct nerves.

 

The Inflorescence

 

The inflorescence is synanthous. The peduncle is curved and measures 34.0-36.0cm long. The rachis is pendent and measures 13.3-13.5cm long. The flowers alternate distichously and are spaced 2.0-3.0mm apart. There are c4 appressed non floriferous bracts at the base of the rachis. The flowers open from the proximal section of the rachis.

 

The Flowers

 

The sepals and petals spread widely. The dorsal sepal is shaped elliptic and has an obtuse apex. The dorsal sepal measures 5.7-5.9mm long and 2.3-2.5mm wide. The dorsal sepal is three veined and has entire margins. The lateral sepals are shaped oblong-elliptic and have obtuse apices. The laterals measure 5.7-5.8mm long and 2.5-2.8mm wide. The lateral sepals are three veined and have entire margins. The petals are shaped elliptic and have obtuse apices. The petals measure 5.3-5.6mm long and 2.8-3.1mm wide. The petals are three veined and have finely erose margins. The labellum is easily versatile, pendent and 3-lobed. There is a small cup like sac at the base of the hypochile. The labellum measures 3.6-3.7mm long and 2.6-2.7mm wide. The labellum is three veined and has erose margins around the apices of the side lobes, the rest of the labellum has entire margins. The side lobes are shaped obliquely triangular and have acute apices. The side lobes are porrect but gradually recurve, the side lobes are shorter than the mid-lobe. The mid-lobe is shaped broadly obovate with a rounded apex. There are two keels that run from the front of the sac and terminate just past the base of the mid-lobe. The column is erect to slightly incurved and measures 2.4-2.7mm long. The apical wing is prolonged into a rounded-truncate apex with erose-dentate margins. The apical wing distinctly exceeds the anther cap and is as long as the rest of the column. The column foot is short. The stelidia grow upwards from the base of the column, are slightly incurved, and are distinctly shorter than the column apex, the stelidia reach the anther cap. The stelidia are shaped linear-triangular and have acute apices.

 

Herbarium Specimens

 

Holotype

 

National Herbarium Netherlands, Leiden (L)

 

Specimen L0058468

 

Isotype

 

Other herbarium specimens

 

Scent

 

I could find no record.

 

Flowering Season

 

Flowering plants have been collected in the wild during May.

 

Culture

 

I do not think this species is in cultivation

 

Similar Species

 

Dendrochilum cobbianum

Dendrochilum uncatum var uncatum

Dendrochilum uncatum var longispicatum

Dendrochilum parvipapillatum

Dendrochilum pangasinanense

 

Other Information

 

This species is only known from the holotype.

 

Reference -

 

PEDERSEN, Henrik. 1997, The Genus Dendrochilum (Orchidaceae) in the Philippines - A Taxonomic Revision. Opera Botanica, Denmark

 

World Checklist of Selected Plant Families. 27 July 2009. The Board of Trustees of the Royal Botanic Gardens, Kew. Published on the Internet; http://www.kew.org/wcsp/ accessed 27 July 2009.