Pterostylis spissa (D.L.Jones) G.N.Backh.

Victorian Naturalist 127: 57 (2010) APNI

Taxonomic status:Accepted

Occurrence status:Endemic

Establishment means:Native

Threat status:Victoria: endangered (e)

Flowering plant to 12 cm tall, stem leaves 4–6, closely sheathing. Rosette leaves 5–9, elliptic, 0.5–1.5 cm long, 3–8 mm wide, shortly petiolate to nearly sessile, crowded, margins entire. Flowers 3–12, crowded, 6–8 mm long, yellowish green with darker green lines; galea curved throughout, suddenly decurved near the apex; dorsal sepal acute; lateral sepals deflexed, conjoined part broadly ovate in outline when flattened, 3–4 mm long, 4–5 mm wide, margins incurved, concave, free points broadly triangular, c. 2 mm long, parallel; petals asymmetrical, broadest near the base, obtuse. Labellum pale green with a dark green basal appendage; lamina obovate-oblong, c. 2 mm long, c. 1.6 mm wide; appendage c. 1.3 mm long, with a prominent central beak pointing forward. Flowers Oct.–Nov.

Endemic to Victoria where found in stony rise basalt plains grasslands near Mortlake, on heavy red-brown loam.

See notes under Pterostylis crassicaulis and P. cycnocephala.

Pterostylis spissa is critically endangered and known from very plants in a small roadside reserve.

Created by: Jeff Jeanes, 2015-06-04
Updated by: Val Stajsic, 2018-02-15
Distribution map
life Life
kingdom Plantae
phylum Tracheophyta
superorder Lilianae
order Asparagales
family Orchidaceae
genus Pterostylis
Higher taxa