Pterostylis concava

Pterostylis concava, commonly known as the pouched greenhood or cupped banded greenhood, is a plant in the orchid family Orchidaceae and is endemic to the southwest of Western Australia. The plants either have a rosette of leaves in the years when not flowering or stem leaves on a flowering spike. When flowering, it has up to ten or more flowers which are dark reddish-brown, sometimes green and white with deeply cupped lateral sepals. It is an uncommon orchid, mostly found between Bindoon and Mount Barker.

Wikipedia-Autoren · CC BY-SA · Quelle

Pterostylis concava, is a terrestrial, perennial, deciduous, herb with an underground tuber. Non-flowering plants have a rosette of between four and eight leaves, each leaf 6–30 mm (0.2–1 in) long and 5–15 mm (0.2–0.6 in) wide on a stem 10–15 mm (0.4–0.6 in) tall. When flowering, there are ten or more dark reddish-brown, green or green and white flowers borne on a flowering spike 100–450 mm (4–20 in) high. The flowering spike has between three and nine stem leaves which are 14–40 mm (0.6–2 in) long and 4–7 mm (0.2–0.3 in) wide. The flowers are 20–25 mm (0.8–1 in) long, 12–15 mm (0.5–0.6 in) wide. The dorsal sepal and petals form a hood called the "galea" over the column. The lateral sepals turn downwards, are deeply dished, 17–20 mm (0.7–0.8 in) long, 18–22 mm (0.7–0.9 in) wide and joined at their base. The labellum is dark brown, hairy and insect-like, about 7 mm (0.3 in) long, 4 mm (0.2 in) wide and flicks upwards when touched. Flowering occurs from June to early September.