Common name: Hooked Greenhood
Pterostylis hamata Blackmore & Clemesha APNI*
Synonyms: Oligochaetochilus hamatus (Blackmore & Clemesha) Szlach. APNI*
Description: Terrestrial herb.
Rosette leaves 4–10, elliptic to obovate, 1.5–3.5 cm long, 8–12 mm wide, margins entire.
Scape to 45 cm high, with 2–8 closely sheathing stem leaves. Flowers 2–12, c. 2 cm long, transparent with green and brown markings and suffusions. Dorsal sepal with a decurved filiform point c. 7 mm long. Lateral sepals ovate in outline when flattened; conjoined part concave, margins incurved, glabrous; free points filamentous, 6–8 mm long, hooked forwards, nearly parallel, 3–4 mm apart at the tips. Petals with well-developed proximal flanges that meet and block off the base of the galea. Labellum oblong-ovate, 4.5–5 mm long, c. 2 mm wide, brown, thick; marginal trichomes 4 or 5 pairs, c. 2 mm long, white; basal lobe poorly developed, with 4–6 pairs of trichomes c. 1.8 mm long.
Distribution and occurrence: Grows among rocks in sparse forest.
NSW subdivisions: NC, NT, ST, NWS, CWS, SWS
Other Australian states: Qld Vic.
A complex of variants at present under study.
Text by D. L. Jones
Taxon concept: Flora of NSW 4 (1993)
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