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Dendrobium trigonopus

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Dendrobium trigonopus

Dendrobium trigonopus

Scientific Classification
Kingdom: Plantae
Division: Magnoliophyta
Class: Liliopsida
Order: Asparagales
Family:Orchidaceae
Subfamily: Epidendroideae
Tribe: Dendrobieae
SubTribe: Dendrobiinae
Genus: Dendrobium
Species: Den. trigonopus
Alliance:
Binomial name
Dendrobium trigonopus
Rchb. f. 1887


Dendrobium trigonopus is a species of genus Dendrobium

DescriptionEdit

Herbs, epiphytic; stems clustered, golden yellow when dry, fusiform or sometimes clavate, 5-11 cm, 12-15 mm in diam. at middle, thick and fleshy, unbranched, with 3-5 nodes, internodes ca. 2 cm. Leaves 3 or 4, subterminal, oblong, 8-9.5 × 1.5-2.5(or more) cm, thickly leathery, abaxially sparsely black hairy on midvein, midvein concave adaxially, with short clasping sheaths, apex acute. Inflorescences 1 or 2, distal on latest or older mature leafy pseudobulbs, arcuate, 2- or 3-flowered; peduncle 1-4 cm; floral bracts ovate-triangular, ca. 5 mm, fleshy, apex acute. Pedicel and ovary yellowish green, 3-4 cm; ovary triquetrous. Flowers nodding, thick; sepals and petals waxy yellow, lip yellow, disk tinged with pale green. Dorsal and lateral sepals subsimilar, narrowly lanceolate, ca. 30 × 10 mm, strongly keeled, both margins ascending above middle, midvein on abaxial surface slightly raised and wing-shaped, apex acute; lateral sepals with base only partly adnate to column foot; mentum subglobose, ca. 4 mm. Petals ovate-oblong, ca. 25 × 11 mm, 8-veined, apex acute; lip erect, nearly parallel to column, ca. 25 mm, base shortly clawed, apex 3-lobed; lateral lobes embracing column, subobovate, upper margin denticulate, apex rounded; mid-lobe orbicular, smaller than width between 2 lateral lobe apices; disk densely papillose. Column ca. 6 mm, upper margin of teeth with several shallow indentations; anther cap conic, ca. 5 mm, glabrous.

Plant blooms from late winter to early spring with 1 to 4 flower. Flowers are fragrant and 4 to 5 cm wide.

DistributionEdit

Plant is found growing in the forest of Burma, Thailand, SW China, Laos and Vietnam at elevations of 300 to 1500 meters.

CultureEdit

Plant grows in cold to warm temperatures with medium amounts of light. Keep plant moist and fertilize during growth season. Reduce watering as winter approaches. During winter with hold watering until new shoots appear. Grow in a well drain mix of sphagnum moss or medium fir bark.

VaritiesEdit

ImageNameDescription
Den trigonopus Dendrobium trigonopus Sepals and petals are yellow, Lip is yellow

NamingEdit

Common Names:Edit

  1. Kam Pak Gai
  2. Golden Chicken's Beak Orchid
  3. Triangular Column Foot Dendrobium

SynonymEdit

  1. Callista trigonopus (Rchb. f.) Kuntze 1891
  2. Dendrobium velutinum Rolfe 1895

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