Family: Orchidaceae
Pterostylis plumosa
Citation:
Cady, Austral. Pl. 5:138 (1969).
Synonymy: P. barbata sensu J. Black, Fl. S. Aust. 247 (1943), non Lindley.
, Plumatichilos plumosum Common name: Bearded green-hood.
Description:
Moderately robust, 12-30 cm high; leaves sessile, generally numerous, crowded at or near the base, lanceolate or oblong-lanceolate, 1.5-5 cm long, often extending half-way up the stem, sometimes fewer and more distant, passing into acute sheathing bracts, often imbricate.
Flower green, usually solitary; galea erect, somewhat oblong, c. 30 mm long from the base to the crest, ending in a rather short subulate point, inflated in its lower half, the margins pinched laterally about the middle; lateral sepals (lower lip) linear, reflexed or recurved in the mature flower, the lobes almost parallel, linear, acute, c. 30 mm long; labellum c. 20 mm long, on a narrow-oblong irritable claw, filiform except at the extremities, narrowly channelled below; base dilated into an elongated somewhat boat-shaped process, glabrous and transversely corrugated above, ciliate on the margins and produced posteriorly beyond the insertion of the claw; tip ending in a dark-brown knob, with 2 small oblong depressed wings; filiform portion with long oblique yellow hairs; column erect, c. 20 mm long, rather broadly winged; upper border of the wings rounded with a prominent straight narrow-linear process, lower lobes blunt, falcate-oblong; anterior borders inturned and ciliate; stigma considerably wider than the column, 2-lobed, narrowly obovate, not viscid until after pollination.
Published illustration:
Cady & Rotherham (1970) Australian native orchids in colour, pl. 12; Woolcock (1984) Australian terrestrial orchids, pl. 50A.
Distribution:
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S.Aust.: FR, EP, NL, MU, YP, SL, KI, SE. W.Aust.; N.S.W.; Vic.; Tas. New Zealand. Occurs singly or in small groups in forest, scrublands, heath or mallee heathland and sandy swamp margins.
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Conservation status:
native
Flowering time: Aug. — Nov.
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SA Distribution Map based
on current data relating to
specimens held in the
State Herbarium of South Australia
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Biology:
No text
Author:
Not yet available
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