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Dendrobium mekynosepalum

Dendrobium mekynosepalum

Dendrobium mekynosepalum Schltr., in K.Schum. & Lauterb., Nachtr. Fl. Deutsch. Schutzgeb. Südsee (1905) 154; Repert. Spec. Nov. Regni Veg. Beih. 21 (1923) t. 159, fig. 597.

Type: Schlechter 14061 (holo B, lost).

Synonyms:

  • Diplocaulobium mekynosepalum (Schltr.) Kraenzl., in Engl.

Rhizome short, roots elongated, filiform, flexuose, glabrous. Pseudobulbs crowded, 1-leaved, slender, gradually widened to the base, 12-20 by 0.8 (at the base) to 0.3-0.4 cm (near the apex). Leaves oblong, 8-10 by 2.5-3 cm, apex obtuse, unequally bilobulate, coriaceous. Inflorescences arising in succession from the apex of the pseudobulb, 1-flowered. Pedicel and ovary 4 cm long, slender, glabrous. Flower resupinated, c. 8 cm across. Dorsal sepal lanceolate, to the apex filiform-elongated, 4 cm long. Lateral sepals obliquely lanceolate, to the apex filiform-elongated, to the base abruptly widened, 4 cm long, mentum conical. Petals linear-lanceolate, to the apex filiform-elongated, 3 cm long. Lip 3-lobed in basal third, 1.7 cm long, cuneate at the base, with two parallel undulate-crenulate keels extending from the base of the lip to the top of the claw of the midlobe; lateral lobes short, obliquely oblong, obtuse; midlobe broadly ovate, 0.6 by 0.5 cm, with a narrowly rectangular claw, this 0.5 by 0.4 cm, apex obtuse, basal margins of the blade undulate. Column short, clinandrium 3-lobulate, the lobules tooth-like, with the median much broader than the laterals; column-foot well-developed. Anther rounded-cucullate, glabrous, in front emarginate.
(after Schlechter, 1905).


Sepals and petals brown-red, lip white, yellow in the centre.

Epiphyte in lower montane forest. Altitude 750 to 1300 m.

New Guinea, Solomon Islands.

Papua New Guinea (Madang, Morobe, and Oro Provinces).

Intermediate growing epiphyte.

January, March, July, October.

  • Schlechter, R. 1912. Repert. Spec. Nov. Regni Veg. Beih. 1: 473.
  • Lewis, B. & P.J. Cribb. 1991. Orchids of the Solomon Islands and Bougainville: 214, fig. 51 l-n, pl. 12B.
  • O'Byrne, P. 1994. Lowland Orchids of Papua New Guinea: 206, fig.

The measurements of the lip given by Schlechter appear to be at odds with his drawings, in which two rather different forms are illustrated.


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Dendrobium mekynosepalum

Dendrobium mekynosepalum Schltr., flower detail, photo P. Jongejan, based on Jongejan 992

Dendrobium mekynosepalum

Dendrobium mekynosepalum Schltr., plant habit, photo Ed de Vogel, Leiden cult. 20081623 (de Vogel & Raka) from Papua New Guinea, East New Britain Prov.

Dendrobium mekynosepalum

Dendrobium mekynosepalum Schltr., flowers, various views, photo Ed de Vogel, Leiden cult. 20081623 (de Vogel & Raka) from Papua New Guinea, East New Britain Prov.

Dendrobium mekynosepalum

Dendrobium mekynosepalum Schltr., flower, oblique front view, photo Ed de Vogel, Leiden cult. 20081623 (de Vogel & Raka) from Papua New Guinea, East New Britain Prov.

Dendrobium mekynosepalum

Dendrobium mekynosepalum Schltr., flower, lateral view, photo Ed de Vogel, Leiden cult. 20081623 (de Vogel & Raka) from Papua New Guinea, East New Britain Prov.

Dendrobium mekynosepalum

Dendrobium mekynosepalum Schltr., flowers, various views, photo Ed de Vogel, Leiden cult. 20081623 (de Vogel & Raka) from Papua New Guinea, East New Britain Prov.

Dendrobium mekynosepalum

Dendrobium mekynosepalum Schltr., centre of flower, oblique front view, photo Ed de Vogel, Leiden cult. 20081623 (de Vogel & Raka) from Papua New Guinea, East New Britain Prov.

Dendrobium mekynosepalum

Dendrobium mekynosepalum Schltr., centre of flower, oblique lateral view, photo Ed de Vogel, Leiden cult. 20081623 (de Vogel & Raka) from Papua New Guinea, East New Britain Prov.

Dendrobium mekynosepalum

Dendrobium mekynosepalum Schltr., centre of flower, lateral view, photo Ed de Vogel, Leiden cult. 20081623 (de Vogel & Raka) from Papua New Guinea, East New Britain Prov.

Dendrobium mekynosepalum

Dendrobium mekynosepalum Schltr., plant habit, photo Ed de Vogel, based on Leiden cult. 20080721 (de Vogel & Raka) from PNG, West New Britain Prov.

Dendrobium mekynosepalum

Dendrobium mekynosepalum Schltr., flowers, front view, photo Ed de Vogel, based on Leiden cult. 20080721 (de Vogel & Raka) from PNG, West New Britain Prov.

Dendrobium mekynosepalum

Dendrobium mekynosepalum Schltr., flowers, oblique front view, photo Ed de Vogel, based on Leiden cult. 20080721 (de Vogel & Raka) from PNG, West New Britain Prov.

Dendrobium mekynosepalum

Dendrobium mekynosepalum Schltr., flowers, lateral view, photo Ed de Vogel, based on Leiden cult. 20080721 (de Vogel & Raka) from PNG, West New Britain Prov.

Dendrobium mekynosepalum

Dendrobium mekynosepalum Schltr., flowers, various views, photo Ed de Vogel, based on Leiden cult. 20080721 (de Vogel & Raka) from PNG, West New Britain Prov.

Dendrobium mekynosepalum

Dendrobium mekynosepalum Schltr., habit, photo B. Kieft, based on Leiden cult. 32079

Dendrobium mekynosepalum

Dendrobium mekynosepalum Schltr., flower, photo B. Kieft, based on Leiden cult. 32079

Dendrobium mekynosepalum

Dendrobium mekynosepalum Schltr., flower detail, photo B. Kieft, based on Leiden cult. 32079

Dendrobium mekynosepalum

Dendrobium mekynosepalum Schltr., flower detail, photo P. Jongejan, based on Jongejan 992

Dendrobium mekynosepalum

Dendrobium mekynosepalum Schltr., flowers, photo J. Meijvogel, based on Leiden cult. 32077

Dendrobium mekynosepalum

Dendrobium mekynosepalum Schltr., flower, photo Roy. Bot. Gard. Edin., based on Woods 2210

Dendrobium mekynosepalum

Dendrobium mekynosepalum Schltr., flower, photo P. O'Byrne, based on O'Byrne D1082

Dendrobium mekynosepalum

Dendrobium mekynosepalum Schltr., drawing R. Schlechter in Repert. Spec. Nov. Regni Veg. Beih. 21 (1923) t. 159, fig. 597