Electronic Flora of South Australia
Electronic Flora of South Australia
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Electronic Flora of South Australia species Fact Sheet

Family: Orchidaceae
Pterostylis longifolia

Citation: R. Br., Prod. Fl. Nov. Holl. 327 (1810).

Synonymy: Not Applicable

Common name: Tall green-hood.

Rather rigid, 10-80 cm high; basal rosette not present on flowering plants; stem leaves reduced to small scales near the base, acute, clasping, narrow-lanceolate, 1-4 cm long above the middle; very rarely a lateral basal tuft present in addition to the stem leaves.

Flowers usually 3-8 in a raceme, rarely 1, green, an acute bract subtending each pedicel, galea c. 20 mm or less from the base to the crest excluding the ovary, gradually incurved, apex acute but not prolonged into a fine point; lateral sepals (lower lip) reflexed in the mature flower, rather narrow, to 5 mm wide, the lobes with short acuminate tips; labellum on a short movable claw, very irritable, oblong, slightly 3-lobed towards the end; the lateral lobes very small; the tip or middle lobe upturned, 2-fid; lamina c. 8 mm long, papillose-glandular, convex and much thickened at the base with a short pyramidal appendage, thereafter concave; channelled below; column incurved, reaching to the top of the galea; wings nearly square, upper margin crescentic with a short rather blunt tooth about the middle, upper angle blunt and rounded, front margins with inturned hairs; stigma lanceolate.

Published illustration: Fitzgerald (1875) Australian orchids vol. 1, pt 1; Gray (1966) Victorian native orchids 1:67; Woolcock (1984) Australian terrestrial orchids, pl. 56B.

Distribution:  Occurs in small populations in forest, scrub-heathland or mallee-heathland in areas receiving greater than 350 mm per annum rainfall. Locally common.

  Qld; N.S.W.; Vic.; Tas.

Conservation status: native

Flowering time: June — Oct.

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

Biology: No text

Author: Not yet available

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