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Dendrobium alticola

Dendrobium alticola

Dendrobium alticola Schltr., Repert. Spec. Nov. Regni Veg. Beih. 1 (1912) 595; 21 (1928) t. 199, fig. 748.

Type: Schlechter 18732 (holo B, lost).

Synonyms:

  • Grastidium alticola (Schltr.) Rauschert, Feddes Repert. 94 (1983) 447.

Rhizome very short, roots elongated, filiform, flexuose, glabrous. Stems crowded, erect to patent, rigid, 40-50 cm by 3-4 mm, many-leaved, unbranched. Leaf sheaths entirely covering the stem. Leaves erect-patent, elliptic, 3-5 by 1.3-2.3 cm, apex obtusely and unequally bilobulate. Inflorescences arising laterally from the stem, peduncle hardly developed, 2-flowered, spathe laterally compressed, very short, obtuse. Ovary 0.8 cm long, subsessile, cylindrical, glabrous. Flowers c. 4 cm across. Sepals outside near the apex sparsely verruculose. Dorsal sepal oblong, 2 cm long, apex obtuse. Lateral sepals obliquely oblong, a little widened at the base, 2 cm long, apex obtuse; mentum short, obtuse. Petals obliquely spathulate-ligulate, a little shorter than the sepals, sparsely verruculose near the apex, apex obtuse. Lip oblong-pandurate, contracted below the middle, 0.9 by 0.45 cm, in basal half with spreading thickened veins, with a tall basal keel extending to near the middle. Column short, clinandrium 3-lobulate, lateral lobules obliquely rhombic, subdentate, the median tooth-like; column-foot incurved, below the apex with a small callus. Anther quadrangular-cucullate, glabrous.
(after Schlechter, 1912).


Flower whitish with red dots, the column foot with a red spot and a red callus.

Epiphyte in montane forest. Altitude 2400 m.

New Guinea (endemic).

Papua New Guinea (Eastern Highlands Province).

Cool growing epiphyte.

November.

  • Family Orchidaceae
  • Subfamily Epidendroideae
  • Tribe Dendrobieae
  • Subtribe Dendrobiinae
  • Genus Dendrobium
  • Section Grastidium
  • Species Dendrobium alticola

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Dendrobium alticola

Dendrobium alticola Schltr., as Grastidium alticola (Schltr.) Rauschert, photo Mark Clementx in Lasianthera 1 (1996) photo 2, based on Clements 7084 from PNG, Madang Prov.

Dendrobium alticola

Dendrobium alticola Schltr., as Grastidium alticola (Schltr.) Rauschert, photo Mark Clementx in Lasianthera 1 (1996) photo 2, based on Clements 7084 from PNG, Madang Prov.

Dendrobium alticola

Dendrobium alticola Schltr., drawing R. Schlechter in Repert. Spec. Nov. Regni Veg. Beih. 21 (1928) t. 199, fig. 748