Thin mountain greenhood | |
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Scientific classification
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Kingdom: | Plantae |
Clade: | Tracheophytes |
Clade: | Angiosperms |
Clade: | Monocots |
Order: | Asparagales |
Family: | Orchidaceae |
Subfamily: | Orchidoideae |
Tribe: | Cranichideae |
Genus: | Pterostylis |
Species: | P. subtilis
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Binomial name | |
Pterostylis subtilis |
Pterostylis subtilis, commonly known as the thin mountain greenhood, is a species of orchid endemic to New South Wales. It has a rosette of leaves and when flowering a single translucent white flower with dark green lines, a narrow, deeply notched sinus between the lateral sepals and a curved, protruding labellum.
Pterostylis subtilis is a terrestrial, perennial, deciduous, herb with an underground tuber and a rosette of fleshy leaves lying flat on the ground. Each leaf is 30–50 mm (1–2 in) long and 15–25 mm (0.6–1 in) wide. When flowering, there is a single white flower with dark green lines, 35–45 mm (1–2 in) long and 15–20 mm (0.6–0.8 in) wide which is borne on a flowering spike 120–250 mm (5–10 in) high. The dorsal sepal and petals are fused to form a hood or "galea" over the column, the dorsal sepal slightly longer than the petals and all sharply pointed. There is a narrow gap at each side of the flower between the petals and lateral sepals. The lateral sepals are erect with a tapering tip 15–20 mm (0.6–0.8 in) long and there is a deep, narrow sinus between them. The labellum is 16–20 mm (0.6–0.8 in) long, about 3 mm (0.1 in) wide, blunt and curved, protruding above the sinus. Flowering occurs in December and January. [2]
Pterostylis subtilis was first described in 2006 by David Jones and the description was published in Australian Orchid Research from a specimen collected in the Barrington Tops National Park. [3] The specific epithet (subtilis) is a Latin word meaning "thin", "fine", "slender" or "acute ". [4]
The thin mountain greenhood grows with grasses on sheltered forest slopes in the Barrington Tops National Park. [2] [5]
Thin mountain greenhood | |
---|---|
Scientific classification
![]() | |
Kingdom: | Plantae |
Clade: | Tracheophytes |
Clade: | Angiosperms |
Clade: | Monocots |
Order: | Asparagales |
Family: | Orchidaceae |
Subfamily: | Orchidoideae |
Tribe: | Cranichideae |
Genus: | Pterostylis |
Species: | P. subtilis
|
Binomial name | |
Pterostylis subtilis |
Pterostylis subtilis, commonly known as the thin mountain greenhood, is a species of orchid endemic to New South Wales. It has a rosette of leaves and when flowering a single translucent white flower with dark green lines, a narrow, deeply notched sinus between the lateral sepals and a curved, protruding labellum.
Pterostylis subtilis is a terrestrial, perennial, deciduous, herb with an underground tuber and a rosette of fleshy leaves lying flat on the ground. Each leaf is 30–50 mm (1–2 in) long and 15–25 mm (0.6–1 in) wide. When flowering, there is a single white flower with dark green lines, 35–45 mm (1–2 in) long and 15–20 mm (0.6–0.8 in) wide which is borne on a flowering spike 120–250 mm (5–10 in) high. The dorsal sepal and petals are fused to form a hood or "galea" over the column, the dorsal sepal slightly longer than the petals and all sharply pointed. There is a narrow gap at each side of the flower between the petals and lateral sepals. The lateral sepals are erect with a tapering tip 15–20 mm (0.6–0.8 in) long and there is a deep, narrow sinus between them. The labellum is 16–20 mm (0.6–0.8 in) long, about 3 mm (0.1 in) wide, blunt and curved, protruding above the sinus. Flowering occurs in December and January. [2]
Pterostylis subtilis was first described in 2006 by David Jones and the description was published in Australian Orchid Research from a specimen collected in the Barrington Tops National Park. [3] The specific epithet (subtilis) is a Latin word meaning "thin", "fine", "slender" or "acute ". [4]
The thin mountain greenhood grows with grasses on sheltered forest slopes in the Barrington Tops National Park. [2] [5]