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Crepidium grandiflorum

Crepidium grandiflorum

Crepidium grandiflorum (J.J.Sm.) Szlach., Fragm. Florist. Geobot. Suppl. 3 (1995) 126

Type: Gibbs 5595; 5652 (syntypes BM)


  • Microstylis grandiflora J.J.Sm. in L.S.Gibbs, Phytogeogr. Fl. Arfak Mts. (1917) 110
  • Malaxis grandiflora (J.J.Sm.) P.F.Hunt, Kew Bull. 24 (1970) 80

Rhizome creeping, elongated, rooting, entirely covered with overlapping sheaths, roots pubescent. Stems distant, erect, 6.5-7 cm long, c. 7-leaved, lower leaves with a hardly developed blade. Leaves erect-patent, obliquely elliptic to lanceolate-elliptic, sometimes subovate, acuminate, acute, minutely undulate, the 3-5 main nerves curved, dorsally prominent, to 7-7.5 cm long, 2.4-2.7 cm wide; petiole broad, including the sheath to 3.4 cm long. Inflorescence erect, laxly many-flowered, peduncle angular, slightly over 10 cm long, with a small bract-like scale, rachis angular, 11-18 cm long. Floral bracts reflexed, lanceolate-triangular, acute, concave, 1-nerved, 0.75 cm long. Flowers large for the genus, turned to all sides, in rehydrated herbarium material 1.5 cm long. Median sepal pointing downwards, oblong, slightly dilated towards the apex, obtuse, convex, 5-nerved or almost so, 0.9 by 0.4 cm. Lateral sepals obliquely reflexed, obliquely elliptic-oblong, in the apical part slightly dilated, strongly convex, with recurved apex, obtuse, 0.77 by 0.43 cm. Petals reflexed, ligulate, obtuse, retuse, convex, 3-nerved, hardly more than 0.8 cm long, 0.25 cm wide. Lip large, erect, convex, below concave except for the convex base, with two auricles, weakly 3-lobed, pit rather large, somewhat raised, margins thickened, U-shaped, the arms decurrent on the convex apical part of the lip, on either side of the pit with a convex rib, mid-rib thickened in the middle, lip in the middle 5-ribbed, 3-nerved, above the base 5-nerved, outer nerves strongly branched, when flattened in outline 5-angled, not including the auricles almost semi-orbicular, 0.8 cm long, in total slightly over 1 cm long, 0.9 cm wide, narrowed into the mid-lobe; lateral lobes rounded, shortly triangular-(towards the base wavy)dentate, on either side with c. 7-8 teeth; mid-lobe somewhat incurved, triangular, obtuse, very shortly obtusely bidentate, 0.24 cm long, 0.3 cm wide; auricles rather short, widely separated, obliquely triangular, acute or obtuse, 0.2 cm long. Column dorsally compressed, apex dilated, in outline oblong-quadrangular, 0.3 cm long, clinandrium concave, making an obtuse angle with the basal part of the column, wings divergent, obtuse, more or less retuse; rostellum as long as the wings, broad, retuse, lobules obtuse; stigma angular. Anther erect, reniform, narrowed towards the apex, obtuse, emarginate, 0.13 cm wide. Ovary pedicellate, , slightly sigmoid, 6-ribbed, 0.7 cm long. Fruit erect. (After Smith, 1917)

Flowers green.

Terrestrial in montane forest.

Malesia (New Guinea, endemic).

Papua (Indonesia). See map

distribution in New Guinea

Cool growing terrestrial, requires shaded position.


  • Smith, J.J., Bull. Jard. Bot. Buitenzorg, Suppl. 2 (1930) t. 24, fig. I, as Microstylis grandiflora J.J.Sm.
  • Family Orchidaceae
  • Subfamily Epidendroideae
  • Tribe Malaxideae
  • Genus Crepidium
  • Section Herpetorhizis
  • Species Crepidium grandiflorum

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Crepidium grandiflorum

overview picture

Crepidium grandiflorum

Crepidium grandiflorum (J.J.Sm.) Szlach. (as Microstylis grandiflora J.J.Sm.), lip, drawing J.J. Smith, based on Gibbs 5595

Crepidium grandiflorum

Crepidium grandiflorum (J.J.Sm.) Szlach. (as Microstylis grandiflora J.J.Sm.), floral analysis, drawing J.J. Smith, based on Gibbs 5595