Prev Taxon: Genus Agrostophyllum
Current Genus: Genus Agrostophyllum section Agrostophyllum
Next Taxon: Genus Agrostophyllum section Appendiculopsis
Agrostophyllum huonense
Agrostophyllum huonense Ormerod, Orchadian 17 (2012) 230, fig.
Type: Hoogland, R.D. 9636 (holo L; Isotypes: A, CAN B, K x 2, US).
Synonyms:
Epiphytic herb. Roots terete, pubescent, to 0.1 5 cm thick. Stems caespitose, semi-compressed, subdensely foliose, 18- 26 by 0.28-0.35 cm wide across sheaths. Leaves obliquely erect, 0.9-1.3 cm apart, ligulate-lanceolate, 2.7-5 by 0.22-0.33 cm; leaf sheaths open down to next articulation, exposed apart 1-1.8 by 0.2-0.25 cm; stipules lanceolate, acute, 0.03-0.1 cm long; apex tridentate, tips 0.01-0.13 cm long. Inflorescence terminal, hidden among subterminal leaf sheaths, composed of some sheaths (to 1.5 cm long) and bracts, 1 flowered (successively?), to 0.5 cm wide. Pedicel and ovary triquetrous with narrow, low wings, 1.3 cm long. Median sepal broadly oblong-lanceolate, 0.85 by 0.35 cm; apical quarter carinate; apex acute; 5-nerved. Lateral sepals obliquely ovate-lanceolate, 0.975 by 0.38 cm (0.89 cm along the midrib; upper half carinate); apex acute; 5-nerved. Petals oblong-lanceolate, 0.79 by 0.25 cm; apex subacute; 3-nerved. Lip 3-lobed, 0.9 cm long (not including 0.06 cm long apiculus); hypochile at base shortly saccate, inside with a clavate callus its lateral lobes oblique, low- rounded, c. 0.33 by 0.19 cm; epichile widely ovate-reniform, c. 0.57 cm by 0.84 cm (without apiculus) , weakly trilobulate, with apiculate apex, the midlobule 0.13 by 0.35 cm (without apiculus). Column obliquely erect, 0.45 cm long (without anther cap). ).
(After Ormerod, 2012)
Leaf sheaths green or partly or entirely with black margin. Flowers white with a pale yellow patch at base of lip (epichile?).
On tree fern trunks in tree fern grassland. Altitude 2315 m.
Malesia (New Guinea, endemic).
Papua New Guinea (Morobe Prov.); see map.
Cold growing epiphyte.
August.
- Family Orchidaceae
- Subfamily Epidendroideae
- Tribe Dendrobieae
- Subtribe Agrostophyllinae
- Genus Agrostophyllum
- Section Agrostophyllum
- Species Agrostophyllum Agrostophyllum huonense
Agrostophyllum huonense is similar to A. kairoanum Ormerod but differs in the smaller, shorter leaf sheath stipules (0.03-0.1 versus 0.3-0.6 cm), a much longer pedicel and ovary (1.3 versus 0.5 cm), a wider lip epichile (0.84 versus 0.6 cm) and a longer, stouter column (0.45 versus 0.35-0.36 cm).
Agrostophyllum huonense is also similar to A. montanum Schltr. but it apparently has estipulate leaf sheaths, many-flowered inflorescences (not 1-flowered), smaller flowers (sepals to 0.65 versus 0.85-0.975 cm) with more distinct, broadly rounded lateral lobes.
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Agrostophyllum huonense
Agrostophyllum huonense Ormerod, drawing by Paul Ormerod in Orchadian 17 (2012) 230, fig., based on the holotype Hoogland, R.D. 9636 (L)