Patersonia rudis
| Hairy flag | |
|---|---|
Scientific classification 
| |
| Kingdom: | Plantae |
| Clade: | Tracheophytes |
| Clade: | Angiosperms |
| Clade: | Monocots |
| Order: | Asparagales |
| Family: | Iridaceae |
| Genus: | Patersonia |
| Species: | P. rudis
|
| Binomial name | |
| Patersonia rudis | |
| Synonyms[1] | |
Patersonia rudis, commonly known as hairy flag,[2] is a species of plant in the iris family Iridaceae and is endemic to the south-west of Western Australia. It is a tufted, rhizome-forming perennial herb with linear to sword-shaped leaves and violet tepals.
Description[edit]
Patersonia rudis is a tufted perennial herb that typically grows to a height of 40 cm (16 in) and forms a rhizome covered by sticky leaf bases. Its leaves are linear to sword-shaped and 200–700 mm (7.9–27.6 in) long, striated and softly-hairy near the base. The flowering scape is 200–500 mm (7.9–19.7 in) long and velvety with the sheath enclosing the flowers lance-shaped, blackish, prominently veined and 30–63 mm (1.2–2.5 in) long. The outer tepals are violet, egg-shaped with the narrower end towards the base, 25–35 mm (0.98–1.38 in) long and 20–30 mm (0.79–1.18 in) wide, the hypanthium tube 20–30 mm (0.79–1.18 in) long and softly-hairy. Flowering occurs from October to December and the fruit is an oval capsule 20–30 mm (0.79–1.18 in) long, containing black seeds.[2][3]
Taxonomy and naming[edit]
Patersonia rudis was first described in 1846 by Stephan Endlicher in Lehmann's Plantae Preissianae.[4][5] The specific epithet (rudis) means "rough" or "wild".[6]
In 1986, David Alan Cooke and Alex George described two subspecies in the Flora of Australia and the names are accepted by the Australian Plant Census:
- Petersonia rudis Endl. subsp. rudis[7] has leaves more than 300 mm (12 in) long and 3–7 mm (0.12–0.28 in) wide, and a flowering sheath that often becomes more or less glabrous as it ages;[8][9]
- Petersonia rudis subsp. velutina D.A.Cooke[10] has shorter, narrower leaves than the autonym and the sheath is never glabrous.[11][12]
Distribution and habitat[edit]
Subspecies rudis grows in woodland and forest on the Darling Range between New Norcia and Dwellingup in the Jarrah Forest and Swan Coastal Plain biogeographic regions of south-western Western Australia but subspecies velutina grows in more arid woodland and shrubland further east near Southern Cross and Coolgardie in the Avon Wheatbelt and Coolgardie bioregions.[8][9][11][12]
Conservation status[edit]
Both subspecies of P. rudis are classified as "not threatened" by the Western Australian Government Department of Biodiversity, Conservation and Attractions.[9][12]
References[edit]
- ^ a b "Patersonia rudis". Australian Plant Census. Retrieved 5 December 2021.
- ^ a b "Patersonia rudis". FloraBase. Western Australian Government Department of Biodiversity, Conservation and Attractions.
- ^ "Patersonia rudis". Australian Biological Resources Study, Department of Agriculture, Water and the Environment: Canberra. Retrieved 3 December 2021.
- ^ "Patersonia rudis". APNI. Retrieved 5 December 2021.
- ^ Endlicher, Stephan (1846). Plantae Preissianae. Vol. 2. Hamburg. p. 29. Retrieved 5 December 2021.
- ^ Sharr, Francis Aubi; George, Alex (2019). Western Australian Plant Names and Their Meanings (3rd ed.). Kardinya, WA: Four Gables Press. p. 298. ISBN 9780958034180.
- ^ "Patersonia rudis subsp. rudis". Australian Plant Census. Retrieved 5 December 2021.
- ^ a b "Patersonia rudis subsp. rudis". Australian Biological Resources Study, Department of Agriculture, Water and the Environment: Canberra. Retrieved 3 December 2021.
- ^ a b c "Patersonia rudis subsp. rudis". FloraBase. Western Australian Government Department of Biodiversity, Conservation and Attractions.
- ^ "Patersonia rudis subsp. velutina". Australian Plant Census. Retrieved 5 December 2021.
- ^ a b "Patersonia rudis subsp. velutina". Australian Biological Resources Study, Department of Agriculture, Water and the Environment: Canberra. Retrieved 3 December 2021.
- ^ a b c "Patersonia rudis subsp. velutina". FloraBase. Western Australian Government Department of Biodiversity, Conservation and Attractions.