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Dendrobium mamberamense

Dendrobium mamberamense

Dendrobium mamberamense J.J.Sm., Nova Guinea 14 (1929) 400, pl. 59, 54.

Type: Bogor cult. (Feuilletau de Bruyn, Ajoeb) 3 (syn L 5x); Thomsen 829 (syn BO).

Synonyms:

  • Diplocaulobium mamberamense (J.J.Sm.) A.D.Hawkes, Lloydia 20 (1957) 129.

Rhizome short. Pseudobulbs 0-0.4 cm apart, 1-leaved, at base ovoid, 0.85-1.2 by 0.5-0.6 cm, upper part very slender, 2-8.5 cm by 0.8-1.2 mm. Leaves linear, 6-8.5 by 0.4 cm, coriaceous, apex equally bidentate. Inflorescences 1-flowered, spathe narrowly linear, 1.2-1.5 cm long; peduncle 0.85 cm long. Pedicel 3.5 cm long; ovary 0.3 cm long. Flower c. 4 cm across. Dorsal sepal 2.6 cm by 3.4 mm; mentum 0.6 cm long, obtuse. Petals 2.5 cm by 1.3 mm. Lip 3-lobed, 1 by 0.4 cm, with two papillose keels, terminating on the midlobe in two falcate, porrect teeth, the midlobe with a verrucose callus, in front of which a second, smaller hairy callus is present; lateral lobes short; midlobe 0.5 by 0.4 cm. Column 0.25 cm long.
(after Smith, 1929).


Sepals and petals white, apices golden yellow, lip white, lateral lobes with dark purple margins and stripes, the largest callus on the midlobe yellow, the smaller yellowish-white.

Presumably epiphyte in lowland rainforest.

New Guinea (endemic).

Papua (Jayapura Regency: Mamberamo River).

Warm growing epiphyte?.

August.

  • Family Orchidaceae
  • Subfamily Epidendroideae
  • Tribe Dendrobieae
  • Subtribe Dendrobiinae
  • Genus Dendrobium
  • Section Diplocaulobium
  • Subsection Diplocaulobium
  • Species Dendrobium mamberamense

Dendrobium mamberamense J.J.Sm. is closely related to Dendrobium scotiiforme J.J.Sm., from which it differs in the broader leaves.


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Dendrobium mamberamense

Dendrobium mamberamense J.J.Sm., drawing J.J. Smith, based on Bogor cult. (Feuilletau de Bruyn, Ajoeb) 3

Dendrobium mamberamense

Dendrobium mamberamense J.J.Sm., detail of isosyntype specimen: Bogor cult. (Feuilletau de Bruyn, leg. Ajoeb 827) 3 (L)

Dendrobium mamberamense

Dendrobium mamberamense J.J.Sm., isosyntype specimen: Thomsen 827 (L)