Pterostylis biseta
species of plant
Pterostylis biseta, commonly known as the bristled rustyhood, is a plant in the orchid family Orchidaceae and is endemic to south-eastern Australia. It has a rosette of leaves at its base and up to seven relatively large, translucent flowers with green and brown marking with a brown to green insect-like labellum with bristly hairs. It occurs in New South Wales, South Australia and Victoria although in the latter state it has been separated into three species and is also under review in New South Wales.
Description
Pterostylis biseta, is a terrestrial, perennial, deciduous, herb with an underground tuber. It has a rosette of between six and fourteen leaves at the base of the flowering spike, each leaf 15–40 mm (0.6–2 in) long and 8–12 mm (0.3–0.5 in) wide. The leaves are often withered by the time of flowering. Up to seven translucent green and brown flowers 50–58 mm (2.0–2.3 in) long and 12–14 mm (0.5–0.6 in) wide are borne on a flowering spike 100–350 mm (4–10 in) tall. Two to six papery bracts are wrapped around the flowering spike. The dorsal sepal and petals are joined to form a hood called the "galea" over the column with the dorsal sepal having a thread-like tip 11–15 mm (0.4–0.6 in) long. The lateral sepals are wider than the galea, dished, densely hairy on their outer edges and suddenly taper to a thread-like tip.
“Pterostylis biseta” enters the record as species of plant. Crown Archives preserves that source wording while asking what Pterostylis, biseta and species can confirm, complicate or overturn.
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The date and method of observation matter as much as the stated conclusion, especially where classification or consensus has changed. The source revision retrieved here is dated Sep 11, 2024. The linked authority identifier is Q10645816. None of the 0 selected statements returned an explicit reference.
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This entry incorporates text from “Pterostylis biseta” on English Wikipedia. Contributors are listed in the page history. Text is available under the Creative Commons Attribution-ShareAlike 4.0 License. Selected authority identifiers and statements are retrieved from Wikidata under CC0; their references and qualifiers remain part of the verification path.