Current Genus: Genus Dendrobium section Calyptrochilus
Next Taxon: Genus Dendrobium section Conostalix
Dendrobium hartleyi
Dendrobium hartleyi Ormerod, Checkl. Papuasian Orch. (2017) 207, 479 (fig.).
Type: Hartley 12154 (holo A; iso CANB).
Synonyms:
Roots slender, terete, c.0.06 cm thick. Stems slender, very narrowly club-shaped, thickest toward apex, 11-40 by 0.4-0.5 cm when dry. Leaves articulated to sheath, elliptic, 1.2-1.7 by 0.55-0.95 cm; apex obtuse to subacute; margin scarious, minutely dentate. lnflorescences on both leafy and leafless stems, 0.8 cm long; peduncle 0.3 cm long ; rachis densely 7-8 flowered, 0.5 cm long ; floral bracts lanceolate, to 0.5 cm long, with acute apex, 3-nerved. Pedicel and ovary narrowly club-shaped, 1.15 cm long. Median sepal oblong to broadly oblonglanceolate; apex subacute; 3-nerved, 0.5-0.6 by 0.2-0.22 cm. Lateral sepals connate for 0.3 cm, oblong, free part oblong-lanceolate, 1.1-1.38 by 0.28-0.3 cm (along upper margin of free part 0.48 cm long); midnerve low keeled near the apex; apex acute to subacute; 4-nerved; mentum oblong, 0.55-0.7 cm long, with obtuse apex. Petals ligulate to ligulate-lanceolate, 0.45-0.58 by 0.14-0.15 cm; upper margin minutely scattered dentate to papillose; apex obtuse; 1-nerved. Lip narrowly oblong, subpandurate, 1.07-1.28 by 0.3 cm; apex subacute; hypochile broadly oblongved, 0.41-0.5 by 0.22-0.25 cm, 5-ner; epichile broadly oblong-lanceolate, 0.67-0.78 by 0.29-0.3 cm, upper margin minutely erose, apex subacute, 5-nerved. Column semiterete, c. 0.25 cm long; column foot c. 0.65-0.7 cm long.
(after Ormerod, 2017)).
Flowers lavender.
Epiphyte in Beech forest. Altitude 1830 m.
Malesia (New Guinea, endemic).
Papua New Guinea (Eastern Highlands Prov.). See map
Intermediate growing epiphyte.
August.
- Family Orchidaceae
- Subfamily Epidendroideae
- Tribe Dendrobieae
- Subtribe Dendrobiinae
- Genus Dendrobium
- Section Calyptrochilus
- Species Dendrobium hartleyi
Dendrobium hartleyi is similar to D. limpidum in the elliptic, sessile, articulated leaves but differs in the ligulate to ligulate-lanceolate, scattered dentate to papillose petals (versus broadly oblanceolate, erose), and the larger epichile (0.67-0.78 versus 0.55 cm). The flowers are slightly immature (the lesser floral measurements in the description).
Hartley 13699, mentioned in the protologue of D. limpidum by Schuiteman and de Vogel (2001) as a possible new taxon, with stems rooting along their length and with narrow, unfringed petals is possibly D. hartleyi (from the same area) in which the stems occasionally have roots throughout (in the type).
Dendrobium hartleyi is named alter Tom Hartley (1931-2016 ), who made many fine collections in New Guinea.
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Dendrobium hartleyi
Dendrobium hartleyi Ormerod, drawing Paul Ormerod in Checkl. Papuasian Orch. (2017) 207, 479 (fig.).
Dendrobium hartleyi
Dendrobium hartleyi Ormerod, drawing Paul Ormerod in Checkl. Papuasian Orch. (2017) 207, 479 (fig.).