Pterostylis hispidula
From Wikipedia, the free encyclopedia
| Small nodding greenhood | |
|---|---|
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| Pterostylis hispidula growing near Ebor | |
Scientific classification  | |
| Kingdom: | Plantae |
| Clade: | Tracheophytes |
| Clade: | Angiosperms |
| Clade: | Monocots |
| Order: | Asparagales |
| Family: | Orchidaceae |
| Subfamily: | Orchidoideae |
| Tribe: | Cranichideae |
| Genus: | Pterostylis |
| Species: | P. hispidula |
| Binomial name | |
| Pterostylis hispidula | |
| Synonyms[2] | |
Pterostylis hispidula, commonly known as the small nodding greenhood or box greenhood,[3] is a plant in the orchid family Orchidaceae and is endemic to eastern Australia. Nodding greenhoods have flowers which "nod" or lean forwards, have a deeply notched sinus and a curved, hairy labellum. This species is similar to Pterostylis nutans but is smaller and the flowers do not lean as far forward as in that species.
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Pterostylis hispidula, is a terrestrial, perennial, deciduous, herb with an underground tuber. It has a rosette of between three and six egg-shaped to oblong leaves, each leaf 10–40 mm (0.4–2 in) long and 5–15 mm (0.2–0.6 in) wide. The leaves are green to yellowish, have a wavy or crinkled edge and a distinct petiole. A single translucent white flower with green stripes and a reddish tip is borne on a flowering spike 150–300 mm (6–10 in) high, the flower "nodding" or leaning forwards. The flowers are 14–18 mm (0.6–0.7 in) long, 8–10 mm (0.3–0.4 in) wide. There is a wide gap at each side of the flower between the petals and the lateral sepals. The lateral sepals have a tapering tip, 5–8 mm (0.2–0.3 in) long and there is a deeply notched sinus between them. The labellum protrudes from the flower and is 9–12 mm (0.4–0.5 in) long, about 2 mm (0.08 in) wide, curved, dark-coloured and covered with short, bristly hairs. Flowering occurs from March to July.[3][4]