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Gunnarella robertsii

Gunnarella robertsii

Gunnarella robertsii (Schltr.) Senghas, Orchidee 39 (1988) 73

Synonyms:

  • Sarcochilus robertsii Schltr., Repert. Spec. Nov. Regni Veg. 3 (1907) 320
    - Type: Roberts s.n. (1887, New Caledonia (holo B, lost)
  • Chamaeanthus robertsii (Schltr.) Schltr., Repert. Spec. Nov. Regni Veg. Beih. 1 (1913) 957
  • Chamaeanthus laxus Schltr., Repert. Spec. Nov. Regni Veg. Beih. 1 (1913) 958
    - Type: Schlechter 18367 (holo B, lost; iso AMES, BO, L, MO); para: Schlechter 19040 (B, lost)
  • Gunnarella laxa (Schltr.) Senghas, Orchidee 39 (1988) 73

Basionym: Sarcochilus robertsii

Epiphyte, slender, subpatent, 7-18 cm long; roots flexuose, glabrous; stem hardly developed; leaves 4-8, erect-patent, falcate-linear, obliquely and subacutely bilobulate, 3-9 cm long, near the middle 0.3-0.5 cm wide; Inflorescence slender, laxly 20- to many-flowered, somewhat patent, peduncle short; bracts minute, deltoid, much shorter than the ovary. Flowers very small, glabrous. Sepals narrowly oblong, obtuse, 0.33 cm long. Lateral sepals oblique. Petals similar to the lateral sepals and about equal-sized. Lip in outline oblong-ligulate, broadly obtuse, somewhat fleshy, 0.13 cm long, margin in apical third margin on either side with a small, subacute tooth. Column short, column-foot in the middle with a tooth-like thickening, medium-sized. Anther reniform-cucullate, pollinia obliquely ellipsoid, the posterior ones smaller, appressed, stipe linear, half as long as the pollinia, viscidium minute. Ovary cylindrical, glabrous, 0.2 cm long. (After Schlechter, 1911-1914, as Chamaeanthus laxus Schltr.)


Flower white, anther yellow.

Epiphyte in lowland forest. Altitude 0-180 m.

Malesia (New Guinea), Solomon Islands, Vanuatu, New Caledonia.

Papua New Guinea. See map

distribution in New Guinea

Warm growing epiphyte.

January, October.

  • Family Orchidaceae
  • Subfamily Epidendroideae
  • Tribe Vandeae
  • Subtribe Aeridinae
  • Genus Gunnarella
  • Species Gunnarella robertsii
  • Schlechter, R., Repert. Spec. Nov. Regni Veg. Beih. 21 (1928) t. 337, fig. 1301, as Chamaeanthus laxus Schltr.
  • Lewis, B.A. & P.J. Cribb, Orchids of the Solomon Islands and Bougainville (1991) 264, fig. 68A-K, pl. 14C
  • O'Byrne, P., Lowland Orchid. Papua New Guinea (1994) 502, fig., pl.

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Gunnarella robertsii

overview picture

Gunnarella robertsii

Gunnarella robertsii (Schltr.) Senghas, habit, photo P. O'Byrne, based on O'Byrne G300

Gunnarella robertsii

Chamaeanthus robertsii (Schltr.) Schltr., drawing P. O'Byrne

Gunnarella robertsii

Chamaeanthus robertsii (Schltr.) Schltr., drawing P. O'Byrne

Gunnarella robertsii

Chamaeanthus laxus Schltr., from Repert. Spec. Nov. Regni Veg. Beih. 21 (1928) t. 337, fig. 1301