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Phreatia micrantha

Phreatia micrantha

Phreatia micrantha (A.Rich.) Lindl., J. Linn. Soc., Bot. 3, Index (1858) vi

Type: Lesson s. n. , Vanikoro, 1828, (holo P; drawing P, isoW, photo).

Synonyms:

  • Oberonia micrantha A.Rich. in D'Urv., Voy. Astrol., Bot. (1834) 7, pl. 3
  • Rhynchophreatia micrantha (A.Rich.) N.Hallé, Fl. Nouv.-Caléd. Dép. 8 (1977) 341, pl. 140
  • Rhipidorchis micrantha (A.Rich.) D.L.Jones & M.A.Clem., Orchadian 14 (8: Scientific Suppl.) (2004) xv
  • Eria richardiana Rchb.f. in Seem., Fl. Vitiensis (1868) 300
  • Phreatia richardiana (Rchb.f.) Kraenzl. in Engl., Pflanzenr. IV. 50. II. B. 23 (1911) 26
  • ?Oberonia papuana F.M.Bailey, Bot. Bull. Dept. Agric. Queensland 14 (1896) 14
    - Type: Dixson s.n. (New Guinea) [not in BRI (fide Ormerod)]
  • Thelasis samoensis Kraenzl., Bot. Jahrb. Syst. 25 (1898) 607
    - Type: Reinecke 606 (Upolo, Lapua) (syn B, lost); 652 (Upolo, Lapua) (syn B, lost)
  • Phreatia samoensis (Kraenzl.) Schltr., Repert. Spec. Nov. Regni Veg. 3 (1907) 320
  • Phreatia macrophylla Schltr., Bot. Jahrb. Syst. 39 (1906) 78
    - Type: Schlechter 15465 (holo B, lost; iso BM, K, L, LE, P, PR, S, W, Z)
  • Phreatia sarcothece Schltr., Repert. Spec. Nov. Regni Veg. 9 (1911) 438
    - Type: Morrison s.n. (1898; Aneytyum Isl., New Hebrides) (holo B, lost)
  • Phreatia robusta R.S.Rogers, Trans. & Proc. Roy. Soc. South Australia 54 (1930) 39
    - Type: Brisbane cult. (White) s.n. (I-1930, Cairns)= Beck s.n. (holo AD)
  • Phreatia clivicola W.Kittr., Bot. Mus. Leafl. 30 (1984, publ. 1985) 102 (as nom. nov.)
  • Phreatia collina Schltr., Repert. Spec. Nov. Regni Veg. Beih. 1 (1913) 919 (non J.J. Smith)
    - Type: Schlechter 16438 (holo B, lost); para: Schlechter 16600; 17994; 18288; 19533; 20259 (B, lost; AMES)
  • Phreatia collina Schltr. var. linearis Schltr., Repert. Spec. Nov. Regni Veg. Beih. 1 (1913) 920
    - Type: Schlechter 17456 (holo B, lost)
  • Phreatia moluccana J.J.Sm., Bull. Jard. Bot. Buitenzorg, sér. 2, 13 (1914) 35
    - Type: J.J. Smith cult. s.n. (Hatoe Lalikoel); de Savorin Lohmann s.n. (1908, N. Halmaheira); Gjellerup 402
  • Phreatia macrophylloides Kraenzl., Vierteljahrsschr. Naturf. Ges. Zñ74 (1929) 93
    - Type: Daeniker 2483 (Loyaute Isl., Iufon) (holo Z; iso Z)

Epiphytic herb forming a single fan-like growth, up to 40 cm tall. Stem small, hidden by the overlapping leaf-sheaths, continuing to grow throughout the life of the plant, with 4-13 leaves. Leaves 6-35 by 1.1-2.5 cm, linear, obtuse, with an unequally bilobed apex. Inflorescences from the axils of the upper leaves, exceeding the leaves in length, erect or decurved; rachis usually longer than the peduncle, densely many-flowered. Flowers minute. Pedicel 0.15 cm long, ovary 0.2 cm long. Median sepal 0.15 by 0.1 cm, ovate, cucullate. Lateral sepals 0.15 by 0.15 cm, obliquely ovate; mentum short, rounded. Petals 0.1 by 0.07 cm, ovate. Lip shortly and broadly clawed, transversely broadly rhombic-elliptic, 0.12 by 0.12 cm, near the base with a shallow depression containing viscid fluid, on the claw with two small round glands. Column 0.07 cm long (excluding the rostellum), with a large, obtuse rostellum about as long as the column itself.
(Mainly after Lewis & Cribb, 1991, and O’Byrne, 1994)


Flower pure white.
Flowers white.

Epiphyte in lowland and montane forest; 200 to 2600 m.

Malesia (New Guinea), NE Australia, Solomon Islands, Vanuatu, New Caledonia, Fiji, Samoa.

Papua (Indonesia); Papua New Guinea. See map

distribution map

February, March, April, May, July, August, September.

  • Schlechter, R., Repert. Spec. Nov. Regni Veg. Beih. 21 (1928) t. 322, fig. 1239, as Phreatia collina Schltr.
  • Family Orchidaceae
  • Subfamily Epidendroideae
  • Tribe Podochileae
  • Subtribe Thelasiinae
  • Genus Phreatia
  • Section Rhizophyllum
  • Species Phreatia micrantha

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Phreatia micrantha

Phreatia micrantha (A.Rich.) Schltr., plant habit, photo E.F. de Vogel, Leiden cult. 20030759 (de Vogel & Vogel), from Papua New Guinea, Morobe Prov.

Phreatia micrantha

Phreatia micrantha (A.Rich.) Schltr., part of inflorescence, flowers various views, photo E.F. de Vogel, Leiden cult. 20032003 (National Capital Botanic Gardens Port Moresby s.n.), from Papua New Guinea, without locality

Phreatia micrantha

Phreatia micrantha (A.Rich.) Schltr., base of plant, photo E.F. de Vogel, Leiden cult. 20030759 (de Vogel & Vogel), from Papua New Guinea, Morobe Prov.

Phreatia micrantha

Phreatia micrantha (A.Rich.) Schltr., flowers, various views, photo E.F. de Vogel, Leiden cult. 20030759 (de Vogel & Vogel), from Papua New Guinea, Morobe Prov.

Phreatia micrantha

Phreatia micrantha (A.Rich.) Lindl., flower, photo A. Schuiteman, Leiden cult. 20030759 (de Vogel & Vogel), from Papua New Guinea, Morobe Prov.

Phreatia micrantha

Phreatia micrantha (A.Rich.) Schltr., inflorescence, photo E.F. de Vogel, Leiden cult. 20032003 (National Capital Botanic Gardens Port Moresby s.n.), from Papua New Guinea, without locality

Phreatia micrantha

Phreatia micrantha (A.Rich.) Schltr., part of inflorescence, flowers various views, photo E.F. de Vogel, Leiden cult. 20032003 (National Capital Botanic Gardens Port Moresby s.n.), from Papua New Guinea, without locality

Phreatia micrantha

Phreatia micrantha (A.Rich.) Lindl., as Oberonia micrantha A.Rich., plant habit and flower, drawing in D'Urv., Voy. Astrol., Bot. (1834) 7, pl. 3

Phreatia micrantha

Phreatia micrantha (A.Rich.) Lindl., habit, drawing N.H.S. Howcroft 260, from Woodlark Islands.

Phreatia micrantha

Phreatia moluccana J.J.Sm., floral analysis, drawing J.J. Smith, from de Savorin Lohman s.n. (ex Halmahera)

Phreatia micrantha

Phreatia moluccana J.J.Sm., floral analysis, drawing J.J. Smith, from J.J. Smith cult. s.n. (Hatoe Lalikoel)

Phreatia micrantha

Phreatia moluccana J.J.Sm., column and lip, drawing J.J. Smith, from Gjellerup 402

Phreatia micrantha

Phreatia moluccana J.J.Sm., floral analysis, drawing J.J. Smith, from Gjellerup 402

Phreatia micrantha

Phreatia moluccana J.J.Sm., floral analysis, drawing J.J. Smith, from J.J. Smith cult. s.n. (Hatoe Lalikoel)

Phreatia micrantha

Phreatia collina Schltr., drawing R. Schlechter in Repert. Spec. Nov. Regni Veg. Beih. 21 (1928) t. 322, fig. 1239

Phreatia micrantha

Phreatia collina Schltr., herbarium sheet, Schlechter 20259 (isotype specimen BO)

Phreatia micrantha

Phreatia moluccana J.J.Sm., herbarium sheet, Smith cult. s.n. (? Hatoe Lalikoel) (syntype specimen BO)

Phreatia micrantha

Phreatia moluccana J.J.Sm., herbarium sheet, probably syntype specimen, Bogor cult. s.n. (BO, probably syntype specimen)

Phreatia micrantha

Phreatia moluccana J.J.Sm., herbarium sheet, de Savorin Lohmann s.n. (1908, N. Halmaheira) (syntype specimen BO)

Phreatia micrantha

Phreatia moluccana J.J.Sm., herbarium sheet, probably syntype specimen, Bogor cult. s.n. (BO, probably syntype specimen)