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Pterostylis sp. B sensu Harden (1993)
Family Orchidaceae
Pterostylis sp. B sensu Harden (1993) APNI*

Description: Terrestrial herb.

Rosette leaves 3–4, ovate to oblong, 1–4.5 cm long, 5–18 mm wide, margins entire; petiolate.

Scape to 25 cm high, with 3–5 closely sheathing to spreading stem leaves. Flower 4.5–7 cm long, partially nodding, green and white with red or red-brown suffusions in the galea. Dorsal sepal with a filiform point to 12 mm long. Petal margins not flared. Lateral sepals tightly embracing the galea; sinus broadly V-shaped, nearly flat or protruding in a shallow curve when viewed from the side; free points to 45 mm long, filiform, erect or usually recurved. Labellum narrow-ovate to lanceolate, long-acuminate, 18–24 mm long, 3–4 mm wide, dark red-brown, curved, the distal half protruding from the sinus in the set position.


Flower
Photo W. Cherry

Other photo
Photo W. Cherry

Flowering: March–June.

Distribution and occurrence: Grows on ridges and slopes in sclerophyll forest from the coast to inland.
NSW subdivisions: NC, CC, SC, NT, CT, ST, CWS
Other Australian states: Qld 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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