Current Genus: Genus Dendrobium section Calyptrochilus
Next Taxon: Genus Dendrobium section Conostalix
Dendrobium amiengense
Dendrobium amiengense Ormerod, Checkl. Papuasian Orch. (2017) 167, 467 (fig.)
Type: Native collector for Clemens 12284 (holo MICH).
Synonyms:
Epiphytes. Rhizome and roots not seen. Stems terete, flexuous, branching, rather laxly leafy throughout, more than 39 by 0.4 cm when dry; branches simple, 15-17 by 0.1-0.3 cm. Leaves oblong, oblong-lanceolate, rarely elliptic, patent, average 1 cm apart, 2.2-6.3 by 0.8-1.8 cm; leaf sheaths tubular, slightly expanded obliquely opposite the leaf blade, verruculose; apex acute. lnflorescences axillary, on both leafy and leafless stems, short. Flowers dense, 6-10. Pedicel and ovary club-shaped, c. 2.2 cm long. Median sepal oblong-elliptic, 0.8 by 0.4 cm; apex obtuse; 5-nerved. Lateral sepals connate for c. 0.4 cm, obliquely ovate with an elongate basal extension, 0.8 (along upper margin) or 15.5 (along lower margin) by 0.67 cm; midnerve keeled in the upper third; apex subacute; 5-nerved; mentum subcylindric, obtuse, c. 1.2 cm long. Petals oblanceolate, 0.77 by 0.31 cm; near the apex minutely dentate; apex obtuse; 3-nerved. Lip joined to the column foot for c. 0.8 cm, c. 15 by 0.9 cm when spread; apical margin erose to laciniate; apex truncate, cucullate. Column stout, c. 0.23 cm long; column foot c. 1.2 cm long.
(After Ormerod 2017).
Flowers flame yellow; mentum pinkish-purple.
Epiphytes in steep montane shrubbery above river. Altitude 1525-1830 m.
New Guinea (endemic).
Papua New Guinea (Morobe Province).
Cool growing epiphyte, keep in shade.
May, June.
- Family Orchidaceae
- Subfamily Epidendroideae
- Tribe Dendrobieae
- Subtribe Dendrobiinae
- Genus Dendrobium
- Section Calyptrochilus
- Species Dendrobium amiengense
Dendrobium amiengense Ormerod is similar to D. wentianum J.J.Sm. in leaf shape and floral morphology, but differs in the patent leaves (versus deflexed), verruculose leaf sheaths (versus glabrous to weakly verruculose at the apex), flame yellow flowers with pinkish-purple on the mentum (versus entirely orange to red), and a narrower lip (in profile) that is longer adnate to the column foot.
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Dendrobium amiengense
Dendrobium amiengense Ormerod, drawing Paul Ormerod in Checkl. Papuasian Orch. (2017) 167, 467 (fig.)