Accepted name: Dendrochilum convallariaeforme var. minor (Ames) H.A.Pedersen, Opera Bot. 130: 34 (1997)

Subgenus – Platyclinis. Section – Eurybrachium.




Dendrochilum bicallosum var. minor Ames, Orchidaceae 2: 118 (1908).

Dendrochilum confusum Ames, Philipp. J. Sci., C 6: 41 (1911).

Acoridium confusum (Ames) Ames, Orchidaceae 7: 80 (1922).


Origin in the Wild


Luzon, Mindoro and Leyte


Elevation in the Wild


700-830 metres


Habitat in the Wild


On Luzon this species has been collected in Laguna Province on Mount Maquiling and in Sorsogon on the Bulusan Volcano. On Leyte this species has been collected at Masaganap near Jaro.


Ames described this plant as growing on a ledge in ridge forest on Mount Halcon, Mindoro (Ames 1907).


The Plants Description


The pseudobulbs cluster on a short to slightly elongate rhizome. The pseudobulbs are shaped fusiform to somewhat obpyriform. The pseudobulbs measure 1.7-2.6cm long and 0.3-0.6cm in diameter. The pseudobulbs are covered by 3-4 cataphylls while they are growing. The cataphylls soon disintegrate into persistent fibres as the pseudobulbs mature. The leaves are petiolate; the petiole measures 0.7-3.7cm long. The leaf blades are shaped lanceolate to narrowly elliptic and have obtuse to somewhat acuminate apices. The leaf blades measure 7.1-11.2cm long and 1.9-3.3cm wide. The leaves are thin textured and have 3-7 distinct nerves.


The Inflorescence


The inflorescence is synanthous. The peduncle is suberect and measures 3.6-12.6cm long. The rachis is pendent and measures 4.3-8.2cm long. The flowers alternate distichously and are spaced 1.0-2.0mm apart; the rachis twists to form a cylindrical spiral. There is one appressed non-floriferous bract at the base of the rachis. The flowers open from the proximal section of the rachis.


The Flowers


The flower colour is salmon pink. The sepals and petals spread widely. The dorsal sepal is shaped oblong and has an obtuse to subacute apex. The dorsal sepal measures 3.0-3.8mm long and 1.3-1.7mm wide. The dorsal sepal is three veined and has entire margins. The lateral sepals are shaped slightly oblique, oblong and have obtuse to acuminate apices. The laterals measure 3.3-3.5mm long and 1.3-1.8mm wide. The lateral sepals are three veined and have entire margins. The petals are shaped elliptic and have obtuse apices. The petals measure 2.6-3.8mm long and 1.3-1.5mm wide. The petals are three veined and have entire margins. The labellum is pendent and entire. The labellum is shaped obovate to obtuse to an abruptly acuminate apex. The labellum measures 2.6-2.8mm long and 1.7-1.9mm wide. The labellum is three veined and has entire margins. The labellum can have a few scattered ocelli that if present are found around the margin. The column is suberect or straight and measures 1.8-2.0mm long. The apical hood is prolonged into a rounded apex with an irregular to finely erose margin. The stelidia grow upwards from the top of the column and are almost equal to the apical hood. The stelidia are shaped linear-triangular, often slightly falcate with acute apices.


Herbarium Specimens




Philippine National Herbarium, (PNH)


Specimen - destroyed




Specimen 18862 (photo) (Dendrochilum confusum)


Other herbarium specimens


Kew Botanical Gardens (K)


Specimen 71184.000

Specimen 70871.000


National Herbarium Netherlands, Leiden (L)


Specimen L0269525




Ames wrote that the plant was odourless (Ames 1907) and I have not detected a scent on my plant.


Flowering Season


Flowering plants have been collected in the wild during February, May and November.




This species is common in cultivation worldwide. It can be grown slightly warmer than many other species.


Similar Species


Dendrochilum copelandii

Dendrochilum ecallosum (see this page for differences)

Dendrochilum propinquum (see this page for differences)

Dendrochilum convallariaeforme var convallariaeforme


Other Information


Ames wrote of Dendrochilum confusum “This is the small flowered plant which I described in Orchidaceae II as Dendrochilum bicallosum var minor. More material has come to hand which necessitates a revision of my former views. Having compared the type location and other sparse material of Dendrochilum confusum to Dendrochilum convallariaeforme, however I reached the contrasting result that only the size of the flowers seems to represent a consistent difference between the two taxa. Due to the inclusion of Dendrochilum bicallosum as a synonym under Dendrochilum convallariaeforme, it thus become necessary to publish the new combination D. convallariaeforme var. minor”.


This species differs from var convallariaeforme by a different shaped, smaller labellum and dense rachis.




AMES, Oakes. 1907, Orchidaceae Halconenses: An Enumeration of the Orchids Collected on and Near Mount Halcon, Mindoro, Chiefly By E.D. Merrill, Bureau of Printing, Manila.


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


World Checklist of Selected Plant Families. 24 July 2009. The Board of Trustees of the Royal Botanic Gardens, Kew. Published on the Internet; accessed 24 July 2009.