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Glomera rhombea

Glomera rhombea

Glomera rhombea J.J.Sm., Bull. Jard. Bot. Buitenzorg, sér. 2, 2 (1911) 5

Type: Kock, de 34


  • Glossorhyncha rhombea (J.J.Sm.) Schltr., Repert. Spec. Nov. Regni Veg. Beih. 1 (1912) 295
    - Type: Kock, de 34

Epiphyte. Stems close together, slender, sparsely branched, 2.5 cm long (or longer), internodes 0.14-0.75 cm long, 0.05 cm diam. Leaves patent, small, at the base half-twisted, ovate to oblong-ovate, unequally obtuse or somewhat acute, above on either side of the median groove longitudinally convex, transversely rugulose, convex below, fleshy, 0.5-0.73 cm long, 0.18-0.23 cm, wide; sheaths surpassing the internodes, tubular, angular, verrucose, apex long appressed somewhat crisped brownish fimbriate. Inflorescence terminal, 1-flowered, with 2 bracts. Floral bracts clasping the ovary, cucullate, in the basal part tubular, obtusely apiculate, membranous, outer one 0.57 cm, inner one 0.47 cm long. Flower rather large, 1.15 cm diam.. Sepals and petals with recurved apex. Median sepal ovate, acute, margin at the apex somewhat incurved, convex, 3-nerved, 1 cm long, 0.45 cm wide. Lateral sepals at the base long connate to near the apex of the spur, clasping the whole spur, but front margins not adhering, obliquely oblong-ovate, apex conduplicate, apiculate, at the base 3-nerved, 0.9 cm long, 0.43 cm wide, connate part 0.23 long, strongly concave. Petals obliquely broadly rhombic, obtuse, convex, 3-nerved at the base, 0.9 cm long, 0.56 cm wide. Lip slightly surpassing the column and at the base adnate to it, strongly concave, short spurred, indistinctly 3-lobed, to the apex of ovary 0.35 cm long, to the apex of the spur about as long, blade porrect, forming an almost right angle with the spur, at the base separated from the spur by a transverse thickening, when flattened in outline ovate 0.33 cm long 0.28 cm wide, lateral lobes erect, shortly broadly rounded, mid-lobe porrect, separated from the lateral lobes by a broadly obtuse angle, triangular, obtuse, inside with a small longitudinal rib, below on either side of the groove longitudinally convex, 0.13 cm long, at the base 0.18 cm wide; spur making an acute angle with the ovary, laterally compressed, obliquely obovate, to the apex of the ovary 0.24 cm long, apex 0.17 cm high. Column about 0.2 cm long, clinandrium minutely denticulate, filament tooth-like, auricles elongate, slightly surpassing the anther and the rostellum, parallel, linear, somewhat falcate. Anther cucullate, apex elongated, in outline oblong-ovate, apex 2-lobed, in the basal part conical-thickened, at the back concave, 0.14 cm long. Pollinia 4, compressed, oblong-elliptic. Rostellum bifid, lobes triangular. Stigma obliquely funnel-shaped, margin especially in the basal part strongly elongated, recurved, cucullate-incurved. Ovary 3-grooved, glabrous, 0.34 cm long.
(After Smith, 1913)

Flower white, lip with red apex.

Terrestrial in upper montane forest in exposed positions. Altitude 1250-1900 m.

Malesia (New Guinea, endemic).

Papua (Indonesia). See map

distribution in New Guinea

Cool growing terrestrial, keep in light position.

January, March, December.

  • Family Orchidaceae
  • Subfamily Epidendroideae
  • Tribe Arethuseae
  • Subtribe Coelogyninae
  • Genus Glomera
  • Section Uniflorae
  • Species Glomera rhombea
  • Smith, J.J., Nova Guinea 12, 1 (1913) 22, t. 5, fig. 14
  • Royen, P. van, Alp. Fl. New Guinea 2 (1979) 584, fig. 203, as Glossorhyncha rhombea (J.J.Sm.) Schltr.

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Glomera rhombea

Glomera rhombea J.J.Sm., drawing Pieter van Royen, in P.Royen, Alp. Fl. New Guinea 2 (1979) 584, fig. 203. based on de Kock 34 (holo BO)

Glomera rhombea

Glomera rhombea J.J.Sm., drawing J.J. Smith, from de Kock 34

Glomera rhombea

Glomera rhombea J.J.Sm., drawing J.J. Smith, from de Kock 93