Calochilus psednus
From Wikipedia, the free encyclopedia
| Cardwell beard orchid | |
|---|---|
Scientific classification  | |
| Kingdom: | Plantae |
| Clade: | Tracheophytes |
| Clade: | Angiosperms |
| Clade: | Monocots |
| Order: | Asparagales |
| Family: | Orchidaceae |
| Subfamily: | Orchidoideae |
| Tribe: | Diurideae |
| Genus: | Calochilus |
| Species: | C. psednus |
| Binomial name | |
| Calochilus psednus | |
Calochilus psednus, commonly known as the Cardwell beard orchid,[2] is a species of orchid endemic to Queensland. It has up to three bluish green flowers with reddish brown lines and a labellum with a purplish "beard". The plant is leafless when flowering. It is only known from a small area near Cardwell.
Calochilus psednus is a terrestrial, perennial, deciduous, herb with an underground tuber and a single dark green, grooved leaf 60–120 mm (2–5 in) long and 3–5 mm (0.12–0.20 in) wide. The leaf is not present during flowering. Up to three bluish green flowers with reddish brown lines, 11–13 mm (0.4–0.5 in) long and 7–9 mm (0.28–0.35 in) wide are borne on a thin, wiry flowering stem 250–350 mm (9.8–14 in) tall. The dorsal sepal is about 6 mm (0.2 in) long and 4 mm (0.2 in) wide and the lateral sepals are about 7 mm (0.3 in) long and 4 mm (0.2 in) wide. The petals are about 5 mm (0.2 in) long and 3 mm (0.1 in) wide. The labellum is flat, 10–11 mm (0.39–0.43 in) long and about 7 mm (0.3 in) wide and shiny reddish brown. Most of the labellum has well-spaced, short purple hairs apart from the last quarter which is hairless. The flowers appear from December to February but only last a few hours.[2][3]
Taxonomy and naming
Calochilus psednus was first formally described in 1989 by David Jones and Bill Lavarack and the description was published in Proceedings of the Royal Society of Queensland from specimens collected south of Cardwell.[4] The specific epithet (psednus) is derived from the Ancient Greek word psednos meaning "thin", "scanty" or "bald".[5]