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Phreatia subalpina

Phreatia subalpina

Phreatia subalpina P.Royen, Alp. Fl. New Guinea 2 (1979) 783, fig. 27

Type: Brass 9086 (holo BM; iso L)

Terrestrial, up to 20 cm high herb, erect, in dense clumps. Stems simple or branched, 6-10 cm long, lower parts densely covered with sheaths, in upper part with leaves and inflorescences. Leaves 5-6.5 cm long, limb erect-patent, coriaceous, glabrous, linear, 3-3.5 cm long, 2 mm wide when spread out, often V-shaped in cross-section, equally 2-lobed at tip, lobes obtuse, midrib grooved above, prominent below, margin narrowly revolute and scattered irregularly papillate; sheaths widely tubular, 10 mm long, ribbed, midrib winged, margin membranous, usually crinkled and darker coloured than rest of sheath. Inflorescences and flowers glabrous, axillary, 7-8 cm long, many-flowered. Peduncle 3.5-4 cm long, stout, terete in lower part, more trigonous in upper part, with 2 or 3 tubular, 3-4 mm long bracts mainly in upper half. Rachis 3.5-4 cm long, trigonous, subflexuose. Floral bracts ovate, boatshaped, 2.5-3 mm long, caudate-acuminate. Pedicels 0.5 mm long. Ovary cylindric-clavate, subtrigonous, 2 mm long. Flowers with spreading sepals and petals when mature. Median sepal elliptic-ovate, slightly boatshaped, 1.3 by 0.6 mm, obtuse, indistinctly 1-nerved. Lateral sepals obliquely broadly oblong-ovate, 1.3 by 1 mm, acutish, base widened and attached to column-foot, forming a short mentum, very slightly connate to each other at very base only, 1-nerved. Lateral petals elliptic, 1 by 0.5 mm, obtusish, 1-nerved. Lip ovoid-slipperlike, 1 mm long, obtuse, base shortly clawed, 3-nerved. Column short, 0.5 mm long. Column-foot short and curved. Anther flattish trapezoid, 0.5 by 0.6 by 0.2 mm, retuse at either end. Pollinia 8, subglobose. Capsule not seen.
(After van Royen 1979)


Flowers greenish white.

In moss cushions in montane forest; 2700 to 3225 m.

Malesia (New Guinea).

Papua (Indonesia). See map

distribution map

Cool growing terrestrial, requires shaded position.

August, October.

  • Family Orchidaceae
  • Subfamily Epidendroideae
  • Tribe Podochileae
  • Subtribe Thelasiinae
  • Genus Phreatia
  • Section Caulophreatia
  • Species Phreatia subalpina

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Phreatia subalpina

Phreatia subalpina P.Royen, habit & floral analysis, drawing P. van Royen in Alpine Flora of New Guinea 2 (1979) fig. 270, based on Brass 9086

Phreatia subalpina

Phreatia subalpina P.Royen, herbarium sheet, Brass 9086 (isotype specimen L)