Ptilotus extenuatus
| Ptilotus extenuatus | |
|---|---|
| Scientific classification | |
| Kingdom: | Plantae |
| Clade: | Tracheophytes |
| Clade: | Angiosperms |
| Clade: | Eudicots |
| Order: | Caryophyllales |
| Family: | Amaranthaceae |
| Genus: | Ptilotus |
| Species: | P. extenuatus
|
| Binomial name | |
| Ptilotus extenuatus Benl[1]
| |
Ptilotus extenuatus is a species of flowering plant in the family Amaranthaceae and is endemic to eastern Australia. It is an erect perennial plant with a woody rootstock, linear to egg-shaped or lance-shaped leaves, and spikes of about 20 crowded flowers. The species is extinct in New South Wales and "critically endangered" in Queensland.
Description
Ptilotus extenuatus is an erect perennial plant with a woody rootstock with stems up to 30 cm (12 in) high that later lie close to the ground. The stems are covered with woolly hairs at first but later become glabrous. The leaves are linear to egg-shaped or lance-shaped, up to 12 mm (0.47 in) long, 3.5 mm (0.14 in) wide and petiolate, about 10–20 mm (0.39–0.79 in) apart. The flowers are borne in spikes up to 120 mm (4.7 in) long with up to 20 crowded flowers, each with three fertile stamens and a club-shaped ovary.[2][3][4]
Taxonomy
Ptilotus extenuatus was first formally described in 1981 by Gerhard Benl in the journal Telopea from specimens collected by Charles Fraser in 1818.[4][5]
Distribution
This species of Ptilotus is only known from four widely scattered collections, the type collection and one other in New South Wales, and two in the far south of Queensland.[6]
Conservation status
Ptilotus extenuatus is listed as "extinct" in New South Wales[3][6] and "critically endangered" under the Queensland Government Nature Conservation Act 1992.[7]
See also
References
- ^ "Ptilotus extenuatus". Australian Plant Census. Retrieved 28 June 2025.
- ^ Jacobs, Surrey Wilfrid Laurance; Lapinpuro, L. "Ptilotus extenuatus". Royal Botanic Garden, Sydney. Retrieved 28 June 2025.
- ^ a b "Ptilotus extenuatus - profile". New South Wales Government, Office of Environment and Heritage. Retrieved 28 June 2025.
- ^ a b Benl, Gerhard (1981). "Ptilotus extenuatus (Amaranthaceae), a hitherto undescribed species from New South Wales". Telopea. 2 (2): 147–151. Retrieved 28 June 2025.
- ^ "Ptilotus extenuatus". APNI. Retrieved 28 June 2025.
- ^ a b Bean, Anthony R. (2008). "A synopsis of Ptilotus (Amaranthaceae) in eastern Australia. Telopea 12(2):". Telopea. 12 (2): 234. Retrieved 28 June 2025.
- ^ "Taxon - Ptilotus extenuatus". Queensland Government WildNet. Retrieved 28 June 2025.