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Habenaria ochroleuca

Habenaria ochroleuca

Habenaria ochroleuca R.Br., Prodr. (1810) 313

Type: Brown s.n. (North Coast, Island Y2, 18 Feb. 1803) (lectotype BM, chosen by Clements)

Synonyms:

  • Habenaria eurystoma Schltr., Repert. Spec. Nov. Regni Veg. 10 (1911) 248
    - Type: Armit 390 (lecto MEL, chosen by Clements)

Tuber oblongoid. Stem 20-45 by 0.1-0.2 cm, 2-3-leaved at the base. Leaves narrowly oblong, 5-10 by 0.4-0.6 cm, apex acute to acuminate. Inflorescence racemose, peduncle-scales 5-6, 0.6-1 cm long, subulate, rather laxly to densely few- to many-flowered. Floral bracts about half as long as the ovary. Ovary 1-1.4 cm long, variously curved. Flowers c. 1 cm across. Median sepal ovate, 0.35-0.4 by 0.25 cm, apex slightly constricted, obtuse. Lateral sepals patent, more or less subfalcate, 0.6 by 0.15 cm. Petals rather broadly subfalcate, slightly longer than the median sepal, 0.25 cm wide, forming a helmet with the median sepal, at the base on the posterior margin with a very short lobule. Lip 3-lobed just above the cuneate or semicircular base, c. 0.8 cm long, spurred; lateral lobes very narrowly triangular, 0.6 cm long, long acuminate; mid-lobe narrowly triangular, slightly shorter than the lateral lobes, acute; spur pointing backwards, straight or incurved, narrowed in the middle, widest at the mouth. Column 0.3 cm long, staminodes c. 0.1 cm long; rostellum indistinct; stigmatophores about 0.2 cm long. Anther channels about half as long as and adhering to the stigmatophores; caudicles at right angles to the pollinia; viscidium rather small, hemispherical. (After Dockrill, 1969).


Flower white, median sepal usually green.

Terrestrial in grassland in savanna woodland in seasonally wet places.

New Guinea, Australia.

Papua New Guinea. See map

distribution in New Guinea

Warm growing terrestrial, requires light position and dry resting period.

January.

  • Family Orchidaceae
  • Subfamily Orchidoideae
  • Tribe Orchideae
  • Subtribe Orchidinae
  • Genus Habenaria
  • Species Habenaria ochroleuca
  • Dockrill, A. W., Austral. Indig. Orchids 1 (1969) 38, fig.
  • Renz, J., Pl. Syst. Evol. 155 (1987) 330, fig. 5 c-e

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Habenaria ochroleuca

overview picture

Habenaria ochroleuca

Habenaria ochroleuca R.Br., herbarium specimen (L), Brass 8649

Habenaria ochroleuca

Habenaria ochroleuca R.Br., detail of herbarium specimen (L), Brass 8649