About
Contact
Links
Electronic Flora of South Australia
Electronic Flora of South Australia
Census of SA Plants, Algae & Fungi
Identification tools
 

Electronic Flora of South Australia species Fact Sheet

Family: Orchidaceae
Prasophyllum fuscum

Citation: R. Br., Prod. Fl. Nov. Holl. 318 (1810).

Synonymy: Not Applicable

Common name: Slaty leek-orchid.

Description:
A slender to moderately robust plant, 15-80 cm high; leaf of variable length, usually equalling the spike, erect, terete, dilated at the union with the stem.

Flowers semi-erect, green, yellow or brown, in a moderately loose or slightly crowded raceme, sweetly perfumed; ovary oblong-ovoid to ovoid, subtended by a small acute bracteole; dorsal sepal erect, lanceolate, acute, incurved, the tip usually slightly deflexed; lateral sepals stout, 11-13 x c. 5 mm, tips often 2-dentate, acute, free or partly united, sometimes spreading widely when free, margins incurved; petals usually the same length as the dorsal sepals, lanceolate, erect or slightly spreading; labellum oblong, recurved in its distal third, which is twice as long as wide; erect part ovate or oval; recurved part ending in an acute tip; membranous part narrow, often with a very definite constriction beyond the bend; callose portion may exceed the membranous portion, not conspicuously thickened in the erect part, becoming increasingly thickened as it crosses the constriction and ending very abruptly near the tip, green to maroon; column short and wide; appendages with obtuse tips, shorter than the rostellum, the basal lobes reaching to about their middle, adnate below the stigma to the sides of the stigmatic plate; stigma reniform; pollinia sectile, easily removed, caudicle short.

Conservation status: native

Flowering time: No flowering time is available


SA Distribution Map based
on current data relating to
specimens held in the
State Herbarium of South Australia

Biology: No text

Key to Infraspecific taxa:
2. Lateral sepals connate for half their length in old flowers; callus plate of the labellum generally terminating well before the apex; flowers wholly greenish
var. validum 7c.

Author: Not yet available


Disclaimer Copyright Disclaimer Copyright Email Contact:
State Herbarium of South Australia
Government of South Australia Government of South Australia Government of South Australia Department for Environment and Water