Pterostylis anaclasta
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| Pterostylis anaclasta | |
|---|---|
Scientific classification  | |
| Kingdom: | Plantae |
| Clade: | Tracheophytes |
| Clade: | Angiosperms |
| Clade: | Monocots |
| Order: | Asparagales |
| Family: | Orchidaceae |
| Subfamily: | Orchidoideae |
| Tribe: | Cranichideae |
| Genus: | Pterostylis |
| Species: | P. anaclasta |
| Binomial name | |
| Pterostylis anaclasta | |
| Synonyms[2] | |
|
Oligochaetochilus anaclastus D.L.Jones | |
Pterostylis anaclasta is a species of flowering plant in the orchid family Orchidaceae and is endemic to a restricted part of Queensland. It has a rosette of about 6 sessile leaves and about 4 transparent white flowers with bright reddish lines and markings, a reddish brown labellum with white hairs, and lateral sepals strongly turned backwards.
Pterostylis anaclasta is a terrestrial, perennial, deciduous, herb with an underground tuber. It has a rosette of between about 6, sessile oblong to elliptic leaves at the base of the flowering spike, each leaf 10–15 mm (0.39–0.59 in) long and 5–15 mm (0.20–0.59 in) wide. About 4 transparent white flowers with bright reddish lines and markings are more on a flowering spike about 140 mm (5.5 in) high, each flower on a thin pedicel 3–8 mm (0.12–0.31 in) long. The dorsal sepal and petals form a hood or "galea" over the column with the dorsal sepal. The dorsal sepal is about 20 mm (0.79 in) long, including a thread-like tip about 7 mm (0.28 in) long. The lateral sepals turn downwards and strongly backwards about 8 mm (0.31 in) long and 11 mm (0.43 in) wide with thread-like tips about 12 mm (0.47 in) long. The petals are egg-shaped, about 15 mm (0.59 in) long and 5 mm (0.20 in) wide. The labellum is reddish-brown, insect-like, about 6.5 mm (0.26 in) long, 3.8 mm (0.15 in) wide and has white bristles around its edges. Flowering has been observed in September.[3]