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Crepidium graminifolium

Crepidium graminifolium

Crepidium graminifolium (Schltr.) Szlach., Fragm. Florist. Geobot. Suppl. 3 (1995) 126

Type: Schlechter 19352 (holo B, lost; iso BO, L)

Synonyms:

  • Microstylis graminifolia Schltr., Repert. Spec. Nov. Regni Veg. Beih. 1 (1911) 121
  • Malaxis graminifolia (Schltr.) P.F.Hunt, Kew Bull. 24 (1970) 80
  • Pseudoliparis graminifolia (Schltr.) Szlach. & Marg., Adansonia 21 (1999) 277

Plant erect or ascending, sometimes loosely clustered. 10—35 cm tall. Rhizome short, stem-like; nodes covered by loose tubular scales. Leafy stem erect, rather delicate, (0.06—) 0.1—0.4(—0.5) by (0.1—) 0.2—0.32 cm, almost covered by leaf bases. Leaves (3—) 4—7; petiole channeled, (0.03—) 0.06—0.1(—0.14) by (0.2—) 0. 3—0.5 (—0.6) cm when spread; leaf sheath very loose, inflated, (0.07—) 0.1—0.13 (—0.15) by (0.14—) 0.26—0.5 (—0.64) cm; leaf blade oblique, narrowly lanceolate, grass-like, (2—) 4—11(—13) by 0.2—0.7(—1) cm; base cuneate; apex distinctly attenuate and acuminate; 1-nerved. Inflorescence erect, at least twice as tall as the top of the leaves, (13—) 15—25(—30) cm long; peduncle (8—) 15—10 cm long; raceme (5—) 10—15 cm tall, densely (40—) 60—100-flowered. Sterile bracts few, reflexed except the lowest narrowly triangular to lanceolate, 0.5—1.5 by 0.12—0.25 cm. Floral bracts amplexicaul, deflexed, narrowly triangular to lanceolate, 0.2—0.6 by 0.05—0.12 cm; apex acute; 1-nerved. Pedicel and ovary sinuate, 2.5—3.8 mm long. Flower 0.5—0.6 cm in diam. Median sepal ovate to ovate-oblong, (0.25—) 0.27—0.35 by ( 0.12—) 0.14—0.17 c; apex obtuse; 3-veined. Lateral sepals oblique, ovate, (0.23—) 0.25— 0.34 by 0.13—0.18 cm; apex obtuse to subacute. Petals slightly oblique, obovate to narrowly obovate, (0.22—) 0.25—0.3 by 0.09—0.12 cm; base slightly cuneate; apex rounded. Lip sagittate in outline, (0.25—) 0.27—0.3 by (0.27—) 0.27—0.35 cm; mid- lobe 0.13—0.16 by 0.11—0.16 cm, with distinctly apiculate apex, separated from the lateral lobes by a shallow indentation; lateral lobes usually slightly divergent falcate, (0.07—) 0.09—0.12 by 0.07—0.1 cm, with obtuse apex; central part with 2 parallel, longitudinal, apically convex and incurved lamellae 0.11—0.16 by 0.01— 0.015 cm, c. 0.01 cm thick, at base fused into a callus; basal callus triangular, 0.02—0.03 by 0.04—0.05 cm. Column erect or only slightly recurved, (0.15—) 0.17—0.2 by (0.05—) 0.07—0.09 cm, minutely papillose; staminodes nearly twice as long as the anther, oblong, 0.05— 0.08 by 0.03—0.04 cm, with usually truncate apex; anther 0.03—0.05 by 0.02—0.03 cm; rostellum triangular, 0.025—0.048 cm long; stigma relatively small. Fruit oblong obovate, 0.2—0.35 by 0.11—0.3 cm.
(after Margonska 2003)


Leaf sheath pale green, yellowish or fawn tinged; blade bright green to green above, paler beneath. Floral bracts green. Pedicel and ovary green, sometimes tinged pinkish. Flower pinkish. Column green, yellowish when old, paler at base ; staminodes darker and intensively coloured; anther yellow. Fruit yellowish to fawn.
(after Margonska 2003)

Terrestrial in shady rain forest on humus, sometimes near tracks. Altitude 200 to 920 m.

Malesia (New Guinea, endemic).

Papua New Guinea (Gulf and Morobe Provinces). See map

distribution in New Guinea

Warm growing terrestrial, requires shaded position.

May to June; fruiting from June to July.

  • Schlechter, R., Repert. Spec. Nov. Regni Veg. Beih. 21 (1923) t. 47, fig. 162, as Microstylis graminifolia Schltr.
  • Family Orchidaceae
  • Subfamily Epidendroideae
  • Tribe Malaxideae
  • Genus Crepidium
  • Section Pseudoliparis
  • Species Crepidium graminifolium

Easily distinguished by the obovate to spathulate petals and linear apical curve of the lip lamellae, and especially by the narrow, grass-like leaves, a feature which is rather rare in the genus.


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Crepidium graminifolium

Crepidium graminifolium (Schltr.) Szlach. (as Pseudoliparis graminifolia (Schltr.) Szlach. & Marg.) Drawing Szlachetko in Adansonia 21 (1999) 277.

Crepidium graminifolium

Crepidium graminifolium (Schltr.) Szlach. (as Pseudoliparis graminifolia (Schltr.) Szlach. & Marg.) Column. Drawing Szlachetko in Adansonia 21 (1999) 277.

Crepidium graminifolium

Crepidium graminifolium (Schltr.) Szlach. (as Microstylis graminifolia Schltr.), drawing R. Schlechter in Repert. Spec. Nov. Regni Veg. Beih. 21 (1923) t. 47, fig. 162

Crepidium graminifolium

Crepidium graminifolium (Schltr.) Szlach. (as Microstylis graminifolia Schltr.), herbarium sheet, Schlechter 19352 (isotype specimen BO)

Crepidium graminifolium

Crepidium graminifolium (Schltr.) Szlach. (as Microstylis graminifolia Schltr.), herbarium sheet, Schlechter 19352 (isotype specimen L)