Accepted name: Dendrochilum longilabre (Ames) Pfitzer in H.G.A.Engler (ed.), Pflanzenr., IV, 50 II B 7: 99 (1907)

Subgenus – Platyclinis. Section – Mindanaorchis.




Acoridium longilabre Ames, Proc. Biol. Soc. Wash. 19: 152 (1906).


Origin in the Wild




Elevation in the Wild


1700 metres


Habitat in the Wild


Specimens have been collected from Mount Apo and Mount McKinley in Davao del Sur Province and from the Katanglad Mountains in Bukidnon Province.


E.B. Copeland recorded this species as growing solitary or on mossy trees on Mount Apo. Elmer's field notes described the plant as growing in dense clumps on moss covered tree trunks 10 feet above the humus covered moist soil of dense woods.


The Plants Description


The pseudobulbs cluster on a short rhizome. The pseudobulbs are shaped fusiform to pyriform. The pseudobulbs measure 1.5-3.1cm long and 0.4-1.0cm in diameter. The pseudobulbs are covered by c3 cataphylls while they are growing. The cataphylls soon disintegrate into persistent fibres as the pseudobulbs mature. The leaves are petiolate; the petiole measures 3.8-14.8cm long. The leaf blades are shaped narrowly lanceolate and have obtuse, often minutely mucronate apices. The leaf blades measure 12.5-32.3cm long and 1.1-3.2cm wide. The leaves are thin textured and have 7-9 distinct nerves.


The Inflorescence


The inflorescence is synanthous. The peduncle is finely setose, suberect and measures 14.5-37.6cm long. The rachis is finely setose, suberect to nodding and measures 2.5-8.3cm long. The flowers alternate distichously and are spaced c1.5mm apart; the rachis twists to form a cylindrical spiral. There are 3-5 appressed non-floriferous bracts at the base of the rachis.


The Flowers


Henrik Pedersen wrote (1997) that the flower colour is orange to brick red. The sepals and petals spread widely. The dorsal sepal is shaped linear and has an obtuse to rounded apex. The dorsal sepal measures 5.4-8.2mm long and 1.6-1.9mm wide. The dorsal sepal is three veined and has an entire margin. The lateral sepals are shaped linear and have obtuse apices. The lateral sepals measure 5.8-8.5mm long and 1.5-2.2mm wide. The lateral sepals are three veined and have entire margins. The petals are shaped linear and have obtuse to rounded apices. The petals measure 6.0-7.3mm long and 1.1-1.9mm wide. The petals are three veined and have entire margins. The labellum is pendent and entire. The labellum is shaped linear and has an obtuse to rounded apex. The labellum measures 5.4-8.9mm long and 1.8-2.2mm wide. The labellum is three veined and has an entire margin; the lateral margins incurve at the apex. There are two short keels located along the lateral veins. The column is erect, straight and measures 1.7-2.3mm long. The apical hood is prolonged into a truncate, finely dentate to somewhat bilobed apex which distinctly exceeds the anther cap. The column foot is short. The stelidia grow upwards from the middle of the column and are equal to or slightly exceed the column apex. The stelidia are shaped linear-triangular and have obtuse to subacute apices.


Herbarium Specimens




Philippine National Herbarium (PNH)


Specimen - destroyed







Specimen 18874 (photo)


Royal Botanic Gardens, Kew (K)


I could not locate the specimen



Other herbarium specimens


National Herbarium Netherlands (L)


Specimen L0322618




Yes, a sour scent.


Flowering Season


Flowering plants have been collected in the wild during March, April and May and August.




I do not think this species is in cultivation


Similar Species


Superficially from a distance it looks like Dendrochilum coccineum


Other Information




Reference -


AMES, Oakes. 1908, Illustrations and studies of the Family Orchidaceae Facsimile 2, Ames Botanical Laboratory, North Easton, Massachusetts, Boston.


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


World Checklist of Selected Plant Families. 17 January 2009. The Board of Trustees of the Royal Botanic Gardens, Kew. Published on the Internet; accessed 17 January 2009.