Current Genus: Genus Dendrobium section Calyptrochilus
Next Taxon: Genus Dendrobium section Conostalix
Dendrobium shramii
Dendrobium shramii Ormerod, Checkl. Papuasian Orch. (2017) 255, 488 (fig.).
Type: Brass 10917 (holo AMES).
Synonyms:
Roots terete, 0.03-0.06 cm thick. Rhizome not seen. Stem much branched, weakly to moderately flexuous, 4-angular,13.5 cm long; branches 1.3-3.5 cm long, 5-12 leaved; internodes up to 0.5 by 0.08-0.15 cm. Leaves ovate-lanceolate to lanceolate, 0.5-0.75 by 0.2-0.25 cm; margins scarious, dentate; apex acute. Inflorescences 5-7-flowered, 0,5 cm long; peduncle 0.1 cm long; rachis 0.4 cm long; floral bracts ovate-lanceolate, to 0.3 by 0.16-0.18 cm, with acute apex. Pedicel and ovary narrowly club-shaped, to 0.8 cm long. Median sepal oblong-elliptic, 0.4 by 0.19 cm; apex subacute; 3-nerved. Lateral sepals obliquely oblong, connate for c. 0.2 cm, along upper margin c. 0.45 cm long, along lower margin c.1.02 cm long, free part 0.3 cm wide; upper third ovate; apex acute, shortly keeled near the apex; 5-nerved; mentum oblong, obtuse, c. 0.53 cm long. Petals narrowly rhombic-ligulate, 0.41 by 0.11 cm; upper half with minutely erose-papillose margins; apex subacute; 1-nerved. Lip ligulate-oblanceolate, 5-nerved, 0.1 by 0.28 cm, halfway with a transverse, lunate lamella; hypochile oblong, 0.5 by 0.18-0.22 cm; epichile ovate-oblong, 0.5 by 0.28 cm, upper third with a minutely erose margin, with subacute apex. Column semiterete, 0.18 cm long; column foot c. 0.53 cm long.
(after Ormerod, 2017).
Flower colour not known (possibly purple with an orange lip).
Not recorded. Altitude 2600 m.
Distribution: Malesia, Indonesia, New Guinea, endemic.
Indonesia (Papua Prov., Jayawijaya Regency).
Cool growing epiphyte.
October.
- Family Orchidaceae
- Subfamily Epidendroideae
- Tribe Dendrobieae
- Subtribe Dendrobiinae
- Genus Dendrobium
- Section Calyptrochilus
- Species Dendrobium Dendrobium shramii
Dendrobium shramii is most similar to D. limpidum but differs in the much narrower leaves (0.2-0.25 cm versus 0.7-1 cm), 4-angular stems (versus elliptic to rhombic in section), flowers with rhombic-ligulate, erose-papillose petals (versus broadly oblanceolate, erose) and lip divided in the middle by the septum (hypochile and epichile each 0.5 cm long versus hypochile 0.45 cm and epichile 0.55 cm long).
Dendrobium shramii differs from D. dichaeoides in the articulate leaves (versus non-articulate leaves).
The name commemorates A.K.M. Marsh or" Shram", friend of the author.
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Dendrobium shramii
Dendrobium shramii Ormerod, drawing by Paul Ormerod, in Checkl. Papuasian Orch. (2017) 255, 488 (fig.).