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Dendrobium loesenerianum

Dendrobium loesenerianum

Dendrobium loesenerianum Schltr., Repert. Spec. Nov. Regni Veg. Beih. 1 (1912) 522; 21 (1923) t. 177, fig. 662.

Type: Schlechter 20280 (holo B, lost; iso AMES, BO, G, L, NSW).

Synonyms:

  • Pedilonum loesenerianum (Schltr.) Rauschert, Feddes Repert. 94 (1983) 461.
  • Chromatotriccum loesenerianum (Schltr.) M.A.Clem. & D.L.Jones, Orchadian 13 (2002) 494

Rhizome very short, roots elongated, filiform, flexuose, glabrous. Stems crowded, patent, slender, up to 60 cm long, many-leaved, not or sparsely branched. Leaf sheaths entirely covering the stem. Leaves erect-patent to subpatent, lanceolate, 5.5-8 by 1.1-1.3 cm, apex obliquely aristate-apiculate, thin-textured. Inflorescences racemose, very short, 3-8-flowered. Floral bracts ovate, much shorter than the pedicel and ovary, apex apiculate. Pedicel and ovary 1.7 cm long, slender, glabrous. Flowers resupinated or not, c. 2 cm across. Dorsal sepal oblong-elliptic, 1.1 cm long, apex obtuse. Lateral sepals obliquely oblong-elliptic, widened at the base, 1.1 cm long, apex obtuse; mentum conical, 0.6 cm long, obtuse. Petals obliquely oblong-subspathulate, c. 1 cm long, apex obtuse. Lip concave, at the base narrowly cuneate, in apical part obovate, 1.9 by 0.7 cm, apical margin undulate, pectinate-denticulate, apex hood-like. Column short, on either side just above the base with a small tooth; clinandrium 3-lobulate, lateral lobules falcate-triangular, subacute, the median longer and tooth-like; column-foot ligulate, 0.6 cm long, in the middle somewhat swollen and thickened. Anther subreniform-quadrate, at the back retuse, in front truncate, glabrous.
(after Schlechter, 1912).


Salmon-coloured with purple-red veins, apex of lip purple-red, anther violet.

Epiphyte in lower montane forest. Altitude 1000 m.

New Guinea (endemic).

Papua New Guinea (Sandaun Province)

Intermediate growing epiphyte.

September.

Related to Dendrobium trichostomum.


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Dendrobium loesenerianum

overview

Dendrobium loesenerianum

Dendrobium loesenerianum Schltr., drawing R. Schlechter in Repert. Spec. Nov. Regni Veg. Beih. 21 (1923) t. 177, fig. 662

Dendrobium loesenerianum

Dendrobium loesenerianum Schltr., isotype specimen: Schlechter 20280 (L)

Dendrobium loesenerianum

Dendrobium loesenerianum Schltr., detail of isotype specimen: Schlechter 20280 (L)