Prev Taxon: Genus Dendrobium section Fugacia
Current Genus: Genus Dendrobium Section Grastidium
Next Taxon: Genus Dendrobium section Herpetophytum
Dendrobium triangulum
Dendrobium triangulum J.J.Sm., Bull. Jard. Bot. Buitenzorg, sér. 2, 13 (1914) 65; Nova Guinea 12, 4 (1916) 314, t. 113, fig. 207.
Type: Janowsky 107 (holo BO).
Synonyms:
- Grastidium triangulum (J.J.Sm.) Rauschert, Feddes Repert. 94 (1983) 453.
Stems elongated, rooting and branching, in upper part flexuose, laterally compressed, ancipitous, 25 cm by 2.3 mm, internodes 0.7-0.9 cm long. Leaf sheaths 0.28-0.33 cm wide, much longer than the internodes, minutely transversely rugulose. Leaves erect-patent, twisted at the base so as to lie in one plane, obtuse, 1.45-2.2 by 5.5-7.7 cm, carnose-coriaceous, apex slightly unequally rounded-bilobulate, apiculate. Inflorescences laterally from the stems, very short, 2-flowered. Pedicel and ovary 0.45 cm long. Flowers c. 1 cm across. Dorsal sepal 0.73 cm by 3.8 mm. Lateral sepals 0.7 cm by 0.6 mm, mentum c. 0.4 cm long. Petals 0.63 cm by 2 mm. Lip 3-lobed, when flattened 0.59 by 0.87 cm; midlobe very short, 3-lobulate. Column 0.2 cm long; column-foot 0.4 cm long.
(after Smith, 1916).
Flower yellow.
Epiphyte in lowland rainforest.
New Guinea (endemic).
Papua (Nabire Regency)
Warm growing epiphyte.
July.
- Family Orchidaceae
- Subfamily Epidendroideae
- Tribe Dendrobieae
- Subtribe Dendrobiinae
- Genus Dendrobium
- Section Grastidium
- Species Dendrobium triangulum
Dendrobium triangulum J.J.Sm. belongs to a group of species that includes Dendrobium erubescens Schltr.,
Dendrobium ingratum J.J. Sm., Dendrobium scorpionis Ormerod, and Dendrobium setosum Schltr. Most of these resemble sect. Biloba in habit, while clearly belonging in sect. Grastidium.
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Dendrobium triangulum
Dendrobium triangulum J.J.Sm., drawing J.J. Smith, based on Janowsky 107
Dendrobium triangulum
Dendrobium triangulum J.J.Sm., holotype specimen: Janowsky 107 (BO)