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Crepidium hydrophilum

Crepidium hydrophilum

Crepidium hydrophilum (J.J.Sm.) Szlach., Fragm. Florist. Geobot. Suppl. 3 (1995) 127

Type: Versteeg 1440 (syn BO; iso L); Bogor cult. (Exp. Lorenz (Djibdja 310)) s.n. (syn BO 2x)

Synonyms:

  • Microstylis hydrophila J.J.Sm., Bull. Dép. Agric. Indes Néerl. 19 (1908) 28
  • Malaxis hydrophila (J.J.Sm.) P.F.Hunt, Kew Bull. 24 (1970) 80

Stem short, rooting at the base, 4-5 cm long, c. 5-7-leaved. Leaves patent, petiolate, obliquely ovate-lanceolate, subfalcate, gradually narrowed, acute or obtuse, apiculate, plicate, undulate, the three larger nerves grooved above, keeled underneath, 3.5-6 cm long, 1.15-1.8 cm wide; petiole channelled, including the tubular sheath 1-1.4 cm long. Inflorescence erect, elongated, laxly many-flowered, peduncle angular, 5-10 cm long, with a few reflexed, subulate, to 0.5 cm long scales, rachis with nodding apex, ribbed, 5-15 cm long. Floral bracts reflexed, lanceolate-triangular, acute, 0.3-0.45 cm long. Flowers very small, 0.3-0.35 cm wide, 0.33-0.4 cm long, with recurved sepals and petals. Median sepal ovate, rounded, strongly convex, 3-nerved, 0.18-0.24 cm long, 0.14-0.16 cm wide. Lateral sepals broadly obliquely ovate, broadly obtuse, strongly convex, 3-nerved, 0.2 cm long, 0.14-0.17 cm wide. Petals oblong or elliptic-oblong, obtuse, convex, 1-nerved, 0.17-0.2 cm long, 0.06-0.1 cm wide. Lip broadly horseshoe-shaped, in total 0.23-0.3 cm long, 0.26-0.34 cm wide, in front on either side with 3-4 equally long, short, triangular, acute teeth, and with one obtuse outer tooth; mid-lobe much surpassing the teeth, in outline broadly ovate, up to the middle divided into two triangular, subobtuse or somewhat acute lobules, blade in the middle concave, inside with a transverse curved thickening, at the base with a transverse, erect, short, truncate lamella which is appressed to the column; auricles distant, divergent, short, broadly triangular, subobtuse or somewhat acute, 0.1 cm long. Column short, dorsally compressed, 0.06-0.1 cm long, auricles conical, much surpassing the anther. Anther transversely elliptic-obreniform; pollinia 4, oblong. Ovary pedicellate, 0.3 cm long. (After Smith, 1909)


Leaves satin-like shiny, dull dark violet. Peduncle dull violet. Floral bracts green-purple. Flowers yellowish green, when older becoming dull purple. Pollinia yellow.

Terrestrial in swampy lowland forest.

Malesia (New Guinea, endemic).

Papua (Indonesia). See map

distribution in New Guinea

Warm growing terrestrial, requires shaded position.

July.

  • Smith, J.J., Nova Guinea 8, 1 (1909) 30, t. 10, fig. 30, as Microstylis hydrophila J.J.Sm.
  • Family Orchidaceae
  • Subfamily Epidendroideae
  • Tribe Malaxideae
  • Genus Crepidium
  • Section Crepidium
  • Species Crepidium hydrophilum

The position of Crepidium resupinatum in Crepidium section Crepidium is not entirely certain, it may instead belong to section Commelinodes


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Crepidium hydrophilum

Crepidium hydrophilum (J.J.Sm.) Szlach. (as Microstylis hydrophila J.J.Sm.), floral analysis, drawing J.J. Smith, based on Djibdja 310

Crepidium hydrophilum

Crepidium hydrophilum (J.J.Sm.) Szlach., habit, photo P. O'Byrne, based on O'Byrne M020 from PNG

Crepidium hydrophilum

Crepidium hydrophilum (J.J.Sm.) Szlach., inflorescence, photo P. O'Byrne, based on O'Byrne M020 from PNG

Crepidium hydrophilum

Crepidium hydrophilum (J.J.Sm.) Szlach. (as Microstylis hydrophila J.J.Sm.), floral analysis, drawing J.J. Smith, based on Versteeg 1440

Crepidium hydrophilum

Crepidium hydrophilum (J.J.Sm.) Szlach. (as Microstylis hydrophila J.J.Sm.), herbarium sheet, Versteeg 1440 (syntype specimen BO)

Crepidium hydrophilum

Crepidium hydrophilum (J.J.Sm.) Szlach. (as Microstylis hydrophila J.J.Sm.), herbarium sheet, Bogor cult. (Exp. Lorentz (Djibdja 310)) s.n. (isotype specimen BO)

Crepidium hydrophilum

Crepidium hydrophilum (J.J.Sm.) Szlach. (as Microstylis hydrophila J.J.Sm.), herbarium sheet, Bogor cult. (Exp. Lorentz (Djibdja 310)) s.n. (isotype specimen BO)