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Bulbophyllum microrhombos

Bulbophyllum microrhombos

Bulbophyllum microrhombos Schltr., Repert. Spec. Nov. Regni Veg. Beih. 1 (1912) 719

Type: Schlechter 19757 (holo B, lost)


  • Hapalochilus microrhombos (Schltr.) Garay & W.Kittr., Bot. Mus. Leafl. 30 (1985) 189 (55)

Epiphyte, very small, c. 5 cm high. Rhizome very short. Roots filiform, elongated, flexuose, glabrous. Pseudobulbs ovoid or cylindrical-ovoid, 0.8-1.2 by 0.35-0.55 cm. Leaf erect or suberect, ligulate or oblong-ligulate, minutely apiculate, glabrous, 2-3 by 0.4-0.8 cm near the middle. Inflorescence 1-flowered, basal, slender, filiform, glabrous, 2.5-3 cm long; with few small, distant peduncle-scales. Floral bracts minute, elliptic, sheathing, much shorter than the ovary and pedicel. Flower erect or suberect. Sepals ligulate, subapiculate, glabrous, 0.8 cm long. Lateral sepals somewhat oblique. Petals minute, obliquely rhombic, acute, glabrous, 0.1 cm long. Lip in outline convex-ligulate, subobtuse, 0.55 by about 0.1 cm in the middle; base minutely concave-auriculate; in basal fourth slightly constricted, upwards somewhat widened; margins recurved; underneath hollow; on upper side except in the basal fourth minutely papillose-puberulous. Column very small, curved, thickened at the base; column-foot almost absent; stelidia short, in front unequally angular-bidentate. Ovary and pedicel slender, glabrous, c. 1.2 cm long. (After Schlechter, 1911-1914)

Flowers red. Lip golden yellow, red at the base.

Epiphyte in lower montane forest; 1200 m.

Malesia (New Guinea), Solomon Islands.

Papua New Guinea; see map

Distribution of Bulbophyllum microrhombos in New Guinea

Intermediate growing epiphyte.


  • Schlechter, R., Repert. Spec. Nov. Regni Veg. Beih. 21 (1928) t. 235, fig. 892
  • Family Orchidaceae
  • Subfamily Epidendroideae
  • Tribe Dendrobieae
  • Subtribe Bulbophyllinae
  • Genus Bulbophyllum
  • Section Codonosiphon
  • Species Bulbophyllum microrhombos

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Bulbophyllum microrhombos

Bulbophyllum microrhombos Schltr., floral analysis, R. Schlechter in Repert. Spec. Nov. Regni Veg. Beih. 21 (1928) t. 235, fig. 892