Dendrobium sibilense
Dendrobium sibilense Ormerod, Malesian Orchid J. 4 (2009) 53; fig. 3.
Type: Kalkman & Nicolas 4546 (holo A).
Synonyms:
Terrestrial herb. Stems to 35 by 0.08—0.2 cm; internodes 0.7—2.85 cm long. Leaves at base terete, further slightly compressed, linear, 1.9—5.7 by 0.4 cm; sheaths tubular, striate, 0.7—2.85 cm long; apex unequally bilobed. Inflorescence 1-flowered; peduncle very short. Flowers not resupinate. Pedicel and ovary curved, subcylindric-clavate, 0.3—0.3.5 cm long, forming an obtuse angle with the mentum. Median sepal ovate-elliptic, 0.65 by 0.35 cm; apex acute; 7-nerved. Lateral sepals obliquely ovate-elliptic, 0.7 by 0.6 cm; apex obtuse; 7-nerved; mentum obtuse-angled, 0.5 cm long. Petals oblong-ligulate, 0.69 by 0.195 cm; apex obtuse; 3- nerved. Lip fleshy, 3-lobed, 0.6 by 0.3 cm; 5-nerved; hypochile cuneate, 0.37 by 0.3 cm, with narrow, obtuse lateral lobes, at the base with an oblongoid callus; epichile ovate, 0.23 by c. 0.15 cm, with subacute, verruculose apex. Column 0.2 cm long; column foot c. 0.5 cm long
(after Ormerod 2009)
Sepals and petals light yellow; lip purple in lower half, lighter in upper half; column light purple.
Lower montane forest. Altitude 1200—1300 m.
Malesia (New Guinea)
Indonesia (Papua Province, Boven Digoel Regency)
Intermediate growing eepiphyte.
August.
- Family Orchidaceae
- Subfamily Epidendroideae
- Tribe Dendrobieae
- Subtribe Dendrobiinae
- Genus Dendrobium
- Section Biloba
- Species Dendrobium sibilense
Dendrobium sibilense differs from Dendrobium corticicola Schltr. in the 4 mm wide leaves (versus 6—8 mm), flowers with pale yellow tepals, a basally purple and apically pale yellow lip (versus entirely sulphur yellow flowers) and a curved, not straight pedicel and ovary that forms an obtuse angle with the mentum (versusa a right angle).
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Dendrobium sibilense
Dendrobium sibilense Ormerod. Drawing by Paul Ormerod, Malesian Orchid J. 4 (2009) 53; fig. 3, based on the type, Kalkman & Nicolas 4546.