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Agrostophyllum habbemense

Agrostophyllum habbemense

Agrostophyllum habbemense Ormerod -- Orchadian 16(12): 569 (fig.). 2011

Type: L.J. Brass 10599 (holo AMES; iso BRI).

Epiphytic herb. Roots terete, pubescent, 0.08-0.2 cm thick. Stems caespitose, covered with complanate sheaths, laxly foliose, 21.0-44.7 by 0.25-0.35 cm. Leaves linear-ligulate, 2.5-3 cm apart, 4.7-by 0.25-0.3 cm; leaf sheaths persistent, relatively long, oblique, exposed part 3.6-4 cm long, the stipules deltate, acute to bidentate, 0.02-0.035 cm long; apex unequally bidentate, the lobes 0.1-0.25 cm long, mucro short. Inflorescence terminal, with bracts and sheaths, 1-2 flowered, c. 1.5-1.8 by 0.6-0.7 cm. Pedicel and ovary terete, 1.3 cm long. Median sepal ovate-elliptic, 0.99 by 0.41 cm; apex subacute. Lateral sepals obliquely ovate-elliptic; apex acuminate, dorsally keeled, c. 1.05 by 0.475 cm. Petals irregularly oblong, 0.81 by 0.285 cm; apex subacute; 3-nerved. Lip 3-lobed, 1.05 cm long; hypochile with low oblique lateral lobes, medially with a small callus, c. 0.3 by 0.22 cm; ligula subquadrate, shortly bidentate, with an obtuse mucro, papillose pubescent, raised c. 0.1 cm above the lateral lobes; epichile subtrapeziform, broadly apiculate, c. 0.75 by 0.89 cm, midlobule transversely oblong, 0.3-0.33 by 0.6 cm. Column c. 0.4 cm long.
(after Ormerod 2011)


Leaf sheaths often without black margin, turning yellowish to grey when old. Flowers white, lip with a yellow patch at base of epichile.

Montane forest in valley, low on tree trunks, 2800 m.

Malesia (New Guinea), endemic.

Indonesia (Papua Province, Regency).

Cool growing epiphyte.

October.

  • Family Orchidaceae
  • Subfamily Epidendroideae
  • Tribe Undetermined
  • Subtribe Agrostophyllinae
  • Genus Agrostophyllum
  • Section Agrostophyllum
  • Species Agrostophyllum habbemense

Agrostophyllum habbemense is unique in its laxly leaved stems with flattened sheaths, short narrow leaves (to 7 cm long), short leaf sheath stipules, 1-2 flowered inflorescences with relatively large flowers and a subtrapeziform lip epichile with a transversely oblong midlobe.


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Agrostophyllum habbemense

Agrostophyllum habbemense Ormerod. Drawing by Paul Ormerod in Orchadian 16(12): 569 (fig.). 2011, based on the type: L.J. Brass 10599