Accepted name: Dendrochilum pseudowenzelii

Subgenus – Acoridium. Section – Acoridium.


 
This photo was taken by Trey Sanders of a plant in exhibition
 
 

Synonyms

 

None

 

Origin in the Wild

 

Unknown, Henrik Pedersen assumed that this species was from the Philippines (Pedersen 2011).

 

Elevation in the Wild

 

Unknown

 

Habitat in the Wild

 

Unknown

 

The Plants Description

 

The pseudobulbs cluster along a sort rhizome and are shaped terete-fusiform. The pseudobulbs measure 1.8-4.7cm long and 0.3-0.5cm in diameter. The pseudobulbs are covered by 3-4 cataphylls while they are growing. The cataphylls disintegrate into persistent fibres as the pseudobulbs mature. The leaves are petiolate although not distinctly. The leaf blades are shaped narrowly linear and have acute apices. The leaves measure 9.0-34.0cm long and 0.3-0.5cm wide. The leaves have one distinct nerve.

 

The Inflorescence

 

The peduncle is enclosed for 1/3-3/4 of its length by the subtending leaf. The peduncle is suberect and measures 7.2-9.2cm long. The peduncle is subquadrate in cross-section, densely and finely setose. The rachis is nodding and measures 3.8-6.7cm long. The flowers alternate distichously and are spaced c2mm apart. There are two appressed non-floriferous bracts at the base of the rachis. The flowers open from the proximal and sometimes central section of the rachis.

 

The Flowers

 

The flowers are pale orange or yellow. The sepals and petals spread widely and recurve from their base. The dorsal sepal is shaped linear-oblong to linear lanceolate and has an acute apex. The dorsal sepal measures 4.8-5.5mm long and 1.4-1.6mm wide. The dorsal sepal is keeled at its apex; three veined and has an entire margin. The lateral sepals are shaped obliquely lanceolate and have acute apices. The lateral sepals measure 4.6-5.5mm long and 1.8-1.9mm wide. The lateral sepals are keeled at their apices; three veined and have entire margins. The petals are shaped linear and have acuminate apices. The petals measure 3.7-4.2mm long and 0.9-1.0mm wide. The petals are three veined and have quite entire to slightly irregular margins. The labellum is porrect, saccate and is 3-lobed. The labellum measures 1.0-1.0mm long and 1.9-2.1mm wide. The labellum is obscurely three veined from the base, glabrous and has quite entire to slightly irregular margins. The side lobes are suberect, shaped semicircular and have rounded apices; the side lobes are shorter than or are subequal to the mid-lobe. The mid-lobe is very small, not indented along the midline, shaped subtriangular and has an acuminate apex. There are two calli located at the base of each side lobe that are shaped pyramidal, there is no median callus. The column is straight, suberect and measures 1.0-1.1mm long. The column is hooded at its apex. Stelidia and column foot are absent.

 

Herbarium Specimens

 

Holotype

 

University of Copenhagen (C)

 

The specimen has not been added to the on-line database

 

Scent

 

Unknown

 

Flowering Season

 

Unknown

 

Culture

 

This species is in cultivation in the United Kingdom.

 

Similar Species

 

Dendrochilum wenzelii

Dendrochilum banksii

Dendrochilum javierii

 

Other Information

 

This species differs from Dendrochilum wenzelii by the longer leaves, shorter inflorescences, recurved tepals, differently shaped petals that are longer. The sepals are keeled at their apices and the labellum is not indented along its mid line.

 

The epithet refers to its similarity with Dendrochilum wenzelii. This species was described from cultivated material in the collection of Richard Warren.

 

This species differs from Dendrochilum banksii by the large rounded side lobes, recurved sepals and petals, and larger sepals and petals.

 

Reference -

 

 

PEDERSEN, Henrik. 2011. Three new species of Dendrochilum, with notes on the practice of formally describing cultivated species of unknown provenance, The Malesian Orchid Journal, Vol 7 p117-124