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Plocoglottis confertiflora

Plocoglottis confertiflora

Plocoglottis confertiflora J.J.Sm., Bull. Dép. Agric. Indes Néerl. 5 (1907) 34

Type: Anonymus s.n. (New Guinea, Kamboe Sinai merah) (holo BO; iso L, probable, s.n., 1906, no loc.)

Rhizome thick. Pseudobulb erect, 4 by 0.75 cm, angular-subcylindrical, tapering toward apex, 1-leaved. Leaf petiolate; petiole 4.3 cm long, channelled, blade 21 by 8.5 cm, elliptic-oblong, keeled underneath, undulate, with 7 prominent veins on abaxial side, with many smaller veins, thin-textured, apex acute-acuminate. Inflorescence laterally from base of pseudobulb, erect, 11-17(-40)-flowered; peduncle 15.5 (-27) by 0.2 (-0.3) cm, pubescent; peduncle scales 4, tubular at base, up to 1.75 cm long; rachis (3-) 5.8-26 by 0.1-0.2 cm, densely pubescent, internodes 17 to 39, up to 4.1 cm long. Bracts 0.61 by 0.3 cm, triangular, patent acute, pubescent, sterile bracts none to 6. Flowers up to 1.7 cm wide, opening in succession, not resupinated. Median sepal 0.9-1.5 by 0.3-0.47 cm, lanceolate to linear-lanceolate, strongly concave, apex subacute, sparsely pubescent, thick-textured, with 5-7 distinct veins. Lateral sepals 0.68-1.2 by 0.38-0.6 cm, lanceolate, concave, falcate, pubescent, with 6-8 distinct veins, base broadly cuneate, with short spur, apex subacute to acute. Petals 0.73-1.35 by 0.18-0.27 cm, linear, slightly falcate, glabrous, thick-textured, with 3 distinct veins, base broadly cuneate, apex subacute to acute. Lip 0.55-0.7 by 0.5-0.65 cm, adnate to column at base, almost quadrangular, with 9 distinct veins, at base with a small sac formed by column-foot and lip base 0.06-0.1 cm long; blade with two flat, thin basal lamellae, with a long groove along the median of adaxial side; with two 0.22 cm long, swollen keels on the adaxial side; lateral margins thin, slightly serrulate, apex subtruncate or almost round, in the middle with a 0.1cm long, triangular, acute acumen, glabrous. Column 0.6-0.63 by 0.18-0.2 cm, clavate, with thin wing-like lateral margins, sparsely pubescent dorsally. Anther 0.2 by 0.1 cm, ovate in outline, long keel, apical margin entire, apex obtuse, glabrous. Stigma obovate, rostellum elliptic. Pedicel with ovary 0.6-0.9 by 0.05-0.1 cm, clavate or cylindrical, densely pubescent. (After Eang Hourt, unpublished manuscript 2004)


Pseudobulbs dull dark green. Leaves rather shiny dark green above, pale bluish green and opaque below. Peduncle dull green, vaguely green-marbled. Bracts pale yellow-green, with 5 lines of dull violet dots. Sepals and petals yellow spotted purple, shiny outside. Lip yellow, at base white, purple-spotted. Column yellow at base and in front below the stigma with red spots. Ovary green.

Terrestrial in lowland forest on rich alluvial soil; 250 m.

Malesia (New Guinea).

Papua (Indonesia); Papua New Guinea. See map

distribution map

Warm growing terrestrial, requires shaded position.

September, October, November.

  • Smith, J.J., Icon. Bogor. 3 (1907) 101, t. 242
  • Family Orchidaceae
  • Subfamily Epidendroideae
  • Tribe Collabieae
  • Subtribe Not used
  • Genus Plocoglottis
  • Section Plocoglottis
  • Species Plocoglottis confertiflora

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Plocoglottis confertiflora

Plocoglottis confertiflora J.J.Sm., flower, front view, photo E.F. de Vogel, based on Leiden cult. 20031743

Plocoglottis confertiflora

Plocoglottis confertiflora J.J.Sm., plant habit, photo E.F. de Vogel, based on Leiden cult. 20031743

Plocoglottis confertiflora

Plocoglottis confertiflora J.J.Sm., inflorescence, photo E.F. de Vogel, based on Leiden cult. 20031743

Plocoglottis confertiflora

overview picture

Plocoglottis confertiflora

Plocoglottis confertiflora J.J.Sm., flower detail, column and lip, lateral view, photo E.F. de Vogel, based on Leiden cult. 20031743

Plocoglottis confertiflora

Plocoglottis confertiflora J.J.Sm., flower, oblique front view, photo E.F. de Vogel, based on Leiden cult. 20031743

Plocoglottis confertiflora

Plocoglottis confertiflora J.J.Sm., flower, drawing Natadipoera, from Anonymus s.n. (New Guinea, Kamboe Sinai merah)

Plocoglottis confertiflora

Plocoglottis confertiflora J.J.Sm., flower, drawing Natadipoera, from Anonymus s.n. (New Guinea, Kamboe Sinai merah)

Plocoglottis confertiflora

Plocoglottis confertiflora J.J.Sm., lip+column, drawing Natadipoera, from Anonymus s.n. (New Guinea, Kamboe Sinai merah)

Plocoglottis confertiflora

Plocoglottis confertiflora J.J.Sm., floral analysis, drawing J.J. Smith, from Anonymus s.n. (New Guinea, Kamboe Sinai merah)

Plocoglottis confertiflora

Plocoglottis confertiflora J.J.Sm., flower, column, and lip+column, drawing Natadipoera, from Anonymus s.n. (New Guinea, Kamboe Sinai merah)

Plocoglottis confertiflora

Plocoglottis confertiflora J.J.Sm., herbarium sheet, probably holotype specimen, Anonymus s.n. (New Guinea, Kamboe Sinai merah) (BO, probably holotype specimen)

Plocoglottis confertiflora

Plocoglottis confertiflora J.J.Sm., herbarium sheet, Anonymus s.n. (isotype specimen L, probably)