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Electronic Flora of South Australia species Fact Sheet

Family: Orchidaceae
Pterostylis curta

Citation: R. Br., Prod. Fl. Nov. Holl. 326 (1810).

Synonymy: Not Applicable

Common name: Blunt green-hood.

Description:
Slender, glabrous, 10-20 cm high; leaves on rather long petioles, in a radical rosette, 3-6 cm long, lamina elliptical to oblong-elliptical; stem bracts usually 2, loosely sheathing; also a very loose bract subtending the pedicel.

Flower solitary, green, with a rusty-coloured labellum; galea 3-3.5 cm long, erect; dorsal sepal acute but not acuminate; lateral sepals (lower lip) erect with a wide sinus, the lobes shortly acuminate, not as long as the galea; labellum on a movable claw attached to the projecting foot of the column, c. 14 mm long (without the claw), entire, somewhat oblong-linear but twisted and wider towards the tip, only slightly recurved, the tip wide-acute and showing through the sinus; lamina traversed throughout by a raised longitudinal line; appendage linear, curved, multi-fimbriate; column vertical, c. 20 mm long, adnate posteriorly to the dorsal sepal; wings prolonged at the upper angles into fine linear points, the lower lobe oblong with ciliate internal margins; anther horizontal or almost so, quite blunt; stigma elliptical or ovate-elliptical, situated in the middle of the column, not viscid; rostellum very viscid.

Published illustration: Gray (1966) Victorian native orchids, 1:59; Pocock (1972) Ground orchids of Australia, pl. 113; Woolcock (1984) Australian terrestrial orchids, pl. 50B.

Distribution:  Forms small to extensive colonies in fertile loams in deeply shaded gullies and along creeks in high rainfall areas.

S.Aust.: FR, NL, SL, SE.   All States except W. Aust. and the N.T.

Conservation status: native

Flowering time: July — Oct.


SA Distribution Map based
on current data relating to
specimens held in the
State Herbarium of South Australia

Biology: Putative hybrids have been reported with P. pedunculata (SL).

Author: Not yet available


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