Prasophyllum stygium D.L.Jones & D.T.Rouse

Elfin Leek-orchid

Austral. Orchid Review 82: 46, 47 (2017)

Taxonomic status:Accepted

Occurrence status:Endemic

Establishment means:Native

Threat status:Victoria: endangered (e)

Flowering stem slender, 20–40 cm tall. Leaf-blade to 20 cm long, 2–4 mm diam. at base, erect, apex senescent at flowering. Flowers 8–15, mostly brownish green, fragrant, in an open raceme 5–8 cm long; ovary sessile, obovoid, 5–7 mm long; sepals 5–7 mm long, dorsal sepal ovate-lanceolate, acute, lateral sepals free, ovate-lanceolate, parallel, recurved, apex bidentate; petals 4–5 mm long, linear-lanceolate, spreading, whitish. Labellum sessile, ovate, 4–5 mm long, reflexed at right-angles near middle, lamina white, upper margins crenulate-undulate; callus raised, narrowing distally and extending nearly to labellum apex, brown, papillate. Column appendages oblong, to 2 mm long. Flowers Oct.–Nov.

Endemic to the Stawell area of western Victoria where found in woodlands on rocky brown clay soils.

Closely related to the South Australian Prasophyllum fitzgeraldii, but that species has a darker pink to reddish labellum lamina and the callus plate has a different structure.

True Prasophyllum fitzgeraldii, as represented by the type specimen from the Lofty Ranges, S.Aust., in not believed to occur in Victoria.

Created by: Jeff Jeanes, 2015-04-10
Updated by: Val Stajsic, 2017-07-06
Distribution map
life Life
kingdom Plantae
phylum Tracheophyta
superorder Lilianae
order Asparagales
family Orchidaceae
genus Prasophyllum
Higher taxa