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Prasophyllum alpestre D.L.Jones
Family Orchidaceae
Prasophyllum alpestre D.L.Jones APNI*

Description: Terrestrial herb, 25–45 cm high.

Leaf 15–35 cm long, bright green, shiny.

Inflorescence 5–25-flowered, crowded. Flowers brownish green with white and purplish lateral petals and white labellum, unscented. Dorsal sepal narrowly ovate-lanceolate, 7.5–10 mm long, 3–4.5 mm wide. Lateral sepals connate or occasionally divergent, 7.5–10 mm long. Lateral petals widely spreading, linear-obovate to obovate-spathulate, 8–12 mm long, 1.8–3 mm wide. Labellum sessile, lamina 6.5–10.5 mm long, ovate-oblong when flattened; porrect in the proximal half, recurved sharply in the distal half; apex not projecting through the lateral sepals, the margins entire proximally, strongly undulate-crispate distally. Callus yellowish green, with a dark green central area towards the base, ending just beyond the bend, more or less ovate-oblong, 4.5–5.5 mm long, 3–3.7 mm wide, with emarginate, slightly papillate apex.

Capsule obovoid, 7–10 mm long, 4–6 mm wide, suberect, green, shiny.


Flowering: December–March, flowering freely in the absence of fire.

Distribution and occurrence: Subalpine to alpine areas of SE NSW, Victoria and Tasmania.

Grows in tussock grassland in subalpine to alpine herbfield, moist to wet areas around streams and bogs and woodland dominated by Eucalyptus pauciflora. Soils include well-structured red loams, fibrous or peaty loams and gravelly loams. Altitude 1200-2000 m.
NSW subdivisions: ST
Other Australian states: Vic. Tas.
AVH map***

Text by P.H. Weston
Taxon concept: Jones (1998, 2006)

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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