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Pterostylis truncata Fitzg.
Family Orchidaceae
Common name: Brittle Greenhood, Little Dumpies

Pterostylis truncata Fitzg. APNI*

Synonyms: Diplodium truncatum (Fitzg.) D.L.Jones & M.A.Clem. APNI*

Description: Terrestrial herb.

Rosette leaves 2–6, ovate to lanceolate, 1–3.5 cm long, 5–17 mm wide, margins entire; petiolate.

Scape to 15 cm high, with 2–5 closely sheathing stem leaves. Flower 4–5 cm long, semi-erect, white with green and brown stripes and suffusions. Dorsal sepal long-acuminate, decurved near the apex. Petal margins decurved. Lateral sepals tightly embracing the galea; sinus deeply V-shaped, slightly mounded to nearly flat when viewed from the side; free points 35–40 mm long, filiform, widely divergent, held obliquely forwards. Labellum narrow-ovate to lanceolate, 13–18 mm long, c. 3 mm wide, apex subacute, red-brown, shallowly curved, distal third protruding from the sinus in the set position.

Flowering: February–July.

Distribution and occurrence: Grows in sclerophyll forest, often on sheltered ridges and slopes; south from New England region.
NSW subdivisions: NC, CC, SC, NT, CT, ST, CWS
Other Australian states: Vic.
AVH map***

Text by D. L. Jones
Taxon concept: Flora of NSW 4 (1993)

APNI* Provides a link to the Australian Plant Name Index (hosted by the Australian National Botanic Gardens) for comprehensive bibliographic data
***The AVH map option provides a detailed interactive Australia wide distribution map drawn from collections held by all major Australian herbaria participating in the Australian Virtual Herbarium project.
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