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Prasophyllum flavum R.Br.
Family Orchidaceae
Prasophyllum flavum R.Br. APNI*

Description: Terrestrial herb, to 90 cm high; tubers rhizome-like.

Leaf to 60 cm long, purplish or yellow-green; blade reduced, < 2 cm long.

Inflorescence usually < 50-flowered, moderately crowded. Flowers green or yellow and red-brown, strongly and sweetly scented. Dorsal sepal ovate to lanceolate, to 10 mm long, strongly concave and forming a continuous crescent with the lateral sepals. Lateral sepals to 10 mm long, usually united almost their entire length but infrequently free to base, strongly concave. Lateral petals ovate to lanceolate, to 8 mm long, acute, somewhat thickened. Labellum sessile, lamina to 8 mm long and 3.5 mm wide, ovate to lanceolate when flattened; lamina with base erect, recurving, margins crisped and wrinkled. Callus plate broadly triangular, greenish, low, deeply channelled with irregular margins and extending about three-quarters the length of the lamina. Column wings lanceolate, obtuse with a large, irregular lobe and/or irregular basal teeth; rostellum longer than the wings.

Flowering: October–January

Distribution and occurrence: Grows in fertile well-drained soils in dry to wet sclerophyll forest in high rainfall areas; widespread on the coast and ranges, west to Inverell district.
NSW subdivisions: NC, CC, SC, NT, CT, ST, ?NWS
Other Australian states: Qld Vic. Tas.
AVH map***

Text by P. Bernhardt & R. R. Rowe
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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