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Corybas subalpinus

Corybas subalpinus

Corybas subalpinus P.Royen, Alp. Fl. New Guinea 2 (1979) 83, fig. 48 ('subalinus')

Type: NGF (van Royen) 16151 (holo BISHL; iso BISH, L, LAE)

Synonyms:

  • Gastrosiphon subalpinus (P.Royen) M.A.Clem. & D.L.Jones, Orchadian 13 (2002) 448
    - Type: NGF (van Royen) 16151 (holo BISHL; iso BISH, L, LAE)

Small, 8 cm high, terrestrial or epiphyte. Tuber globose, 0.3 cm across. Stem 5.5 cm long, 3-sided, narrowly winged, glabrous. Cataphyll tubular, 0.6 cm long, acuminate, glabrous. Leaves cordate or triangular-ovate, 1.5-1.8(-3) by 1-1.4(-1.6) cm, acute, at the base cuneate, mid-rib sunken above, somewhat prominent below, basal nerves 2 on either side of mid-rib, only inner one reaching apical part of leaf, cross-veins 6 on either side of the mid-rib, connate to inner basal nerve, margin wrinkled; with numerous pellucid lenticels. Pedicel 0.2 cm long, glabrous. Floral bract linear. ovate at the base, 0.7-1.5 cm long, subulate in apical part, glabrous. Ovary curved cylindrical-clavate, 0.5 by 0.2 cm, 6-ribbed, glabrous. Median sepal 2.2-2.5 cm long, from a narrow boat-shaped base gradually widening and 0.6-1 cm wide in apical third, above that subabruptly hood-shaped widened to 1.2 cm, rounded and folded at the apex, many-nerved. Lateral sepals and petals glabrous, 0.5-1.1 cm long, sepals shorter than the petals. Lip tubular in the basal part, abruptly curved downward and spreading into an orbicular, 0.7-1 cm wide blade, tube ventrally inflated and laterally compressed, margin long-fimbriate but towards the lateral parts these hairs also inside along the margin, boss globose-ovoid, 0.6 by 0.3 by 0.3 cm; spurs conoid or cylindrical, 0.2-0.3 cm long, obtuse. Capsule not seen. (After Van Royen, 1983).


Stem white. Leaves dark green with white veins above, dark purple in the basal part and mid-rib white. Ovary pink. Median sepal dark purple. Lip white with dark purple spots and stripes on inside.

Terrestrial in upper montane forest. Altitude 2400-3048 m.

Malesia (New Guinea, endemic).

Papua New Guinea. See map

distribution in New Guinea

Cool growing terrestrial.

February.

  • Family Orchidaceae
  • Subfamily Orchidoideae
  • Tribe Diurideae
  • Subtribe Acianthinae
  • Genus Corybas
  • Species Corybas subalpinus

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Corybas subalpinus

Corybas subalpinus P.Royen, photo Stephanie Pimm Lyon

Corybas subalpinus

Corybas subalpinus P.Royen, photo Stephanie Pimm Lyon

Corybas subalpinus

Corybas subalpinus P.Royen, photo Stephanie Pimm Lyon

Corybas subalpinus

Corybas subalpinus P.Royen, photo Stephanie Pimm Lyon

Corybas subalpinus

Corybas subalpinus P.Royen, photo Stephanie Pimm Lyon

Corybas subalpinus

Corybas subalpinus P.Royen, photo Stephanie Pimm Lyon

Corybas subalpinus

Corybas cf. subalpinus P.Royen, habit, photo T. M. Reeve, based on Reeve RFN 741

Corybas subalpinus

Corybas subalpinus P.Royen, herbarium sheet, Royen, van NGF 16151, isotype specimen (L)

Corybas subalpinus

overview picture