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Dendrobium flagellum

Dendrobium flagellum

Dendrobium flagellum Schltr., Repert. Spec. Nov. Regni Veg. Beih. 1 (1912) 481; 21 (1923) t. 162, fig. 608.

Type: Schlechter 18402 (holo B, lost; iso AMES, BO, G, L).

Synonyms:

  • Dockrillia flagella (Schltr.) Rauschert, Feddes Repert. 94 (1983) 446.

Rhizome to 50 cm long, stem-like, rooting at the base, flexuose, pendulous, covered with closely appressed scales; roots elongated, filiform, flexuose, glabrous. Pseudobulbs 6-10 cm apart, 1-leaved, cylindrical, 0.5 by 0.25 cm. Leaves terete, whip-like, pendulous, 30-37 by 0.25 cm, apex subacute, carnose. Inflorescences racemose, slender, 8-13 cm long, somewhat laxely many-flowered. Floral bracts minute, deltoid, much shorter than the pedicel. Pedicel and ovary 2.5 cm long, pedicel filiform, ovary subclavate, glabrous. Flowers resupinated, c. 2.5 cm wide. Dorsal sepal oblong-lanceolate, 1.4 cm long, apex acute. Lateral sepals obliquely oblong-lanceolate, abruptly widened to the base, 1.4 cm long, apex acute; mentum 3.5 mm long, obtuse. Petals obliquely linear-subspathulate, 1.4 cm long, apex acute. Lip 3-lobed below the middle, 1.3 by 0.45 cm, cuneate at the base, with two keels extending from the base of the lip to a little below the apex of the midlobe, initially subparallel and straight, on the midlobe slightly divergent and undulate, the midlobe with an additional straight median keel extending to the apex; lateral lobes short, obliquely triangular, subacute; midlobe much longer than lateral lobes, lanceolate, margins undulate, apex acuminate. Column short, clinandrium 3-lobulate, the lateral lobules a little shorter than the tooth-like median lobule. Anther rhomboid, helmet-shaped, in front minutely papillose, truncate.
(after Schlechter, 1912).


Flowers snow-white, anther light yellow.

Epiphyte on solitary trees in grassland. Altitude 150 m.

New Guinea (endemic).

Papua New Guinea (Malia River area).

Warm growing epiphyte, prefers light position.

October.

  • Family Orchidaceae
  • Subfamily Epidendroideae
  • Tribe Dendrobieae
  • Subtribe Dendrobiinae
  • Genus Dendrobium
  • Section Rhizobium
  • Dendrobium flagellum

Dendrobium flagellum Schltr. is possibly conspecific with Dendrobium chordiforme.


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Dendrobium flagellum

Dendrobium flagellum Schltr., flower, oblique front view, cult. and photo John Cara, from PNG

Dendrobium flagellum

Dendrobium flagellum Schltr., plant habit, cult. and photo John Cara, from PNG

Dendrobium flagellum

Dendrobium flagellum Schltr., inflorescence, cult. and photo John Cara, from PNG

Dendrobium flagellum

Dendrobium flagellum Schltr., flowers, various views, cult. and photo John Cara, from PNG

Dendrobium flagellum

Dendrobium flagellum Schltr., flower, front view, cult. and photo John Cara, from PNG

Dendrobium flagellum

Dendrobium flagellum Schltr., flower, oblique front view, cult. and photo John Cara, from PNG

Dendrobium flagellum

Dendrobium flagellum Schltr., flower, oblique lateral view, cult. and photo John Cara, from PNG

Dendrobium flagellum

Dendrobium flagellum Schltr., flower, lateral view, cult. and photo John Cara, from PNG

Dendrobium flagellum

Dendrobium flagellum Schltr., drawing R. Schlechter in Repert. Spec. Nov. Regni Veg. Beih. 21 (1923) t. 162, fig. 608

Dendrobium flagellum

Dendrobium flagellum Schltr., isotype specimen: Schlechter 18402 (L)

Dendrobium flagellum

Dendrobium flagellum Schltr., detail of isotype specimen: Schlechter 18402 (L)