About Pterostylis longifolia R.Br.
Pterostylis longifolia R.Br. is a terrestrial, perennial, deciduous herb that grows from an underground tuber. Non-flowering individuals produce a rosette of three to six linear to lance-shaped leaves. Each leaf in this rosette measures 10–40 mm (0.4–2 in) long and 3–4 mm (0.1–0.2 in) wide. Flowering plants grow an upright flowering spike 150–400 mm (6–20 in) high, which holds up to seven green, partly transparent flowers. The flowering spike bears between five and eight stem leaves, each 30–90 mm (1–4 in) long and 3–5 mm (0.1–0.2 in) wide. Individual flowers are 12–14 mm (0.5–0.6 in) long and 6–8 mm (0.2–0.3 in) wide. The lateral sepals of the flower point downwards, end in a tapering tip, and measure 10–12 mm (0.4–0.5 in) long by 5–7 mm (0.2–0.3 in) wide. The labellum is approximately 5 mm (0.2 in) long and 3 mm (0.1 in) wide. It is pale green, hairy, and marked with a dark stripe running along its mid-line. Flowering takes place between April and September. This species occurs in New South Wales and southern Queensland, where it grows on coasts and tablelands in forest and coastal scrub habitats.
