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Crepidium verruculosum

Crepidium verruculosum

Crepidium verruculosum (J.J.Sm.) Szlach., Fragm. Florist. Geobot. Suppl. 3 (1995) 133


  • Microstylis verruculosa J.J.Sm., Nova Guinea 18 (1935) 20, pl. 5, fig. 8
    - Type: Docters van Leeuwen 11012 (holo L; iso BO)
  • Malaxis verruculosa (J.J.Sm.) P.F.Hunt, Kew Bull. 24 (1970) 85

Rhizome 4-7.5 cm long. Pseudobulbs closely spaced, probably carnose, 3-5 cm long, 4-5-leaved. Leaves erect-patent, oblique, more or less ovate-elliptic, gradually long acuminate with acute tip, 4.5-12 by 1-2.7 cm, at the base obliquely contracted into the petiole, underneath with c. 5 prominent nerves, when dried membranous; petiole channelled, including the sheath 2-3 cm long. Inflorescence laxly many-flowered, peduncle 9.5-11 cm long, with 1-2 small bract-like scales; rachis narrowly winged, more than 22 cm long. Floral bracts reflexed, subulate, to 0.4-0.5 cm long. Flowers 0.8 cm long, 0.6 cm wide. Median sepal pointing downwards, strongly convex, sometimes with a concave spot near the apex, narrowly oblong, 0.53 by 0.17 cm, obtuse, 3-nerved. Lateral sepals divergent, making an obtuse angle, strongly convex, sometimes with the upper part strongly concave, obliquely oblong, slightly falcate, 0.43 by almost 0.2 cm, obtuse, 3-nerved. Petals decurved above the angular-incurved base, divergent, convex, obliquely linear, almost 0.5 cm long, 0.08 cm wide, obtuse, retuse, 1-nerved. Lip horseshoe-shaped, at the apex 3-lobed with somewhat incurved margins; pit longitudinal, deeply concave, dorsally convex, oblong, surrounded by a horseshoe-shaped, broad, convex, minutely verruculose-papillose, dorsally concave depression, at the base with a transverse, equilaterally trapezium-shaped, retuse lamella that is appressed to the column; when flattened in outline without the mid-lobe quadrangular, including the mid-lobe 5-angled, in total 0.53 cm long, without the auricles 0.35 cm long, 0.43 cm wide; mid-lobe distinctly surpassing the lateral lobes, triangular, 0.08 by 0.13 cm, with slightly incurved margins, slightly thickened, at the apex very minutely bidentate; lateral lobes slightly produced, rounded, very shortly acute, 3-dentate mostly with an additional minute obtuse lobule, making an obtuse angle with the mid-lobe; basal auricles distant, divergent, with parallel outer margins, obliquely triangular, narrowly obtuse. Column making an obtuse angle with the ovary, rather large, dorsally compressed, oblong-quadrangular, at the apex somewhat dilated, the sides concave, 0.17 cm long; wings divergent, oblong, truncate, vertical. Anther flat-cucullate, transversely 6-angular-reniform, at the apex truncate, 0.07 cm wide. Pollinia 4, united into two obliquely obovate, dorsally compressed bodies, 0.05 cm long, with a very indistinct viscidium. Rostellum with short but distinct auricles, triangular-bilobulate. Ovary 0.2 cm long, including the 0.5 cm long pedicel conspicuously 6-ribbed. Fruit erect, in immature state 1.4 cm long with the pedicel 0.7 cm long. (After Smith, 1935)

Flowers green.

Terrestrial in montane forest; 1500 m.

Malesia (New Guinea, endemic).

Papua (Indonesia). See map

distribution in New Guinea

Intermediate growing terrestrial, requires shaded position.


  • Family Orchidaceae
  • Subfamily Epidendroideae
  • Tribe Malaxideae
  • Genus Crepidium
  • Section Crepidium
  • Species Crepidium verruculosum

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Crepidium verruculosum

overview picture

Crepidium verruculosum

Crepidium verruculosum (J.J.Sm.) Szlach. (as Microstylis verruculosa J.J.Sm.), floral analysis, drawing J.J. Smith, based on Docters van Leeuwen 11012

Crepidium verruculosum

Crepidium verruculosum (J.J.Sm.) Szlach. (as Microstylis verruculosa J.J.Sm.), herbarium sheet, Docters van Leeuwen 11012 (isotype specimen BO)

Crepidium verruculosum

Microstylis verruculosa J.J.Sm., herbarium sheet, Docters van Leeuwen 11012 (holotype specimen L)