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Plocoglottis seranica

Plocoglottis seranica

Plocoglottis seranica J.J.Sm., Bull. Jard. Bot. Buitenzorg, sér. 3, 10 (1928) 105

Type: Rutten (Kornasi) 1556 (holo L)

Roots 0.1 cm diameter, rather thick, densely pubescent, not branching. Rhizome creeping, 0.2-0.4 cm diameter, internodes 4-6. Pseudobulbs 2.1-8.8 cm apart, 1.4-6 by 0.18-0.4 cm, round in cross section, subobclavate to cylindrical, internodes 1-2(-3), 1.4-6 cm long; 1(-2)-leaved. Sheath 1. Leaves petiolate; petiole 2.6-6 cm long, channelled, blades 11.5-18 by 2.5-3.8(-4.9) cm (index 3-6), ovate to lanceolate, thin-textured, slightly laciniate in cross-section, base cuneate, apex acute-acuminate to acuminate, glabrous, with 3-5 prominent veins. Inflorescence 1-2 laterally from base of pseudobulb, 23.5-51.7 cm long, laxly 5-23-flowered; peduncle 13-22.2 (-24.5) by 0.1-0.21 cm, sparsely pubescent, internodes 3 (-4), 1.9-8.7 cm long; peduncle scales 1.5-2.1 cm long, tubular, sparsely pubescent, with 4-6 distinct veins; rachis 10-29.5 by 0.1-0.2 cm, densely pubescent, internodes up to 20, 0.5-10 cm long. Bracts 0.45-0.7 by 0.27-0.31 cm, triangular, concave, falcate, apex acuminate, densely pubescent; sterile bracts 1-5. Flowers 0.39-0.9 cm wide, opening in succession. Median sepal 1.1-1.5 by 0.23-0.36 cm, lanceolate, concave, sparsely pubescent, with thick in texture, 3-6 distinct veins, apex acute to acuminate. Lateral sepals 0.81-1.2 by 0.31-0.4 cm, lanceolate, concave, slightly falcate, moderately pubescent, with 3-6 (-7) distinct veins, base broadly cuneate with a short basal lobule clasping spur, apex acute to acuminate. Petals 0.7-0.87 by 0.16-0.4 cm, linear to lanceolate, falcate, abaxially sparsely pubescent, mostly thin-textured, with 3 distinct veins, base broadly cuneate, apex long acute to acuminate. Lip 0.7-1 by 0.4-0.6 cm, adnate to column-foot with basal lamellae, subquadrangular, with 3 distinct veins at base, the lateral two branching into 3-4, at base with a small sac formed by column-foot and lip base 0.06-0.1 (-0.2) cm long, with two flat, thin basal lamellae, grooved along the median of adaxial side, lateral margin thins, margins in upper half slightly serrulate, apex truncate, in the middle with a 0.13-0.2 (-0.3) cm, triangular, acuminate acumen; glabrous. Column 0.5-0.65 by 0.1-0.21 cm, clavate, dorsally sparsely pubescent. Anther 0.2 by 0.1-0.12 cm, ovate in outline, apical margin laciniate, apex subacute, glabrous, with a long keel. Stigma orbicular. Pollinia 0.09 by 0.04-0.05 cm, orbicular in lateral view, caudicle 0.1 cm long. Pedicel with ovary 1-1.3 by 0.04-0.2 cm, clavate, densely pubescent. (After Eang Hourt, unpublished manuscript 2004)

Leaves uniformly green. Sepals and petals dull yellow with red-brown spots at the base. Lip cream, tinged yellow with red-brown spots at the base; callus white. Column yellow with purple spots at the base. Anther dull yellow spotted red-brown.

Terrestrial in hill forest; 450 m.

Malesia (Moluccas, New Guinea).

Papua (Indonesia). See map

distribution map

Warm growing terrestrial, requires shaded position.


  • Smith, J.J., Reinwardtia 1 (1950) t. 189, fig. IV
  • Family Orchidaceae
  • Subfamily Epidendroideae
  • Tribe Collabieae
  • Subtribe Not used
  • Genus Plocoglottis
  • Section Plocoglottis
  • Species Plocoglottis seranica

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Plocoglottis seranica

Plocoglottis seranica J.J.Sm., flower, photo A. Schuiteman, based on Yumte 100, from Indonesia, Papua Barat Prov., Maybrat Regency

Plocoglottis seranica

Plocoglottis seranica J.J.Sm., in situ, photo A. Schuiteman, based on Yumte 100, from Indonesia, Papua Barat Prov., Maybrat Regency

Plocoglottis seranica

Plocoglottis seranica J.J.Sm. drawing J.J. Smith, based on Rutten (Kornasi) 1556, from Indonesia, Moluku Selatan

Plocoglottis seranica

Plocoglottis seranica J.J.Sm., herbarium sheet, Rutten (Kornasi) 1556 (holotype specimen L), from Indonesia, Moluku Selatan