Biology:Isopogon scabriusculus
| Isopogon scabriusculus | |
|---|---|
| |
| Subspecies scabriusculus | |
Scientific classification 
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| Kingdom: | Plantae |
| Clade: | Tracheophytes |
| Clade: | Angiosperms |
| Clade: | Eudicots |
| Order: | Proteales |
| Family: | Proteaceae |
| Genus: | Isopogon |
| Species: | I. scabriusculus
|
| Binomial name | |
| Isopogon scabriusculus Meisn.[1]
| |
| Synonyms[1] | |
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Isopogon scabriusculus is a species of flowering plant in the family Proteaceae and is endemic to southwestern Western Australia. It is a shrub with cylindrical, or narrow flat, sometimes forked leaves, and spherical to oval heads of pink or red flowers.
Description
Isopogon scabriusculus is a shrub that typically grows to about 2 m (6 ft 7 in) high and wide, with reddish brown or greyish branchlets. The leaves are cylindrical, grooved or flat and narrow, up to 180 mm (7.1 in) long, sometimes forked with the undivided part up to 95 mm (3.7 in) long. The flowers are mostly arranged on the ends of branchlets, in sessile, spherical to oval heads up to 30 mm (1.2 in) in diameter with overlapping, egg-shaped involucral bracts at the base. The flowers are red or pink, sometimes hairy and the fruit is a hairy nut about 3.5 mm (0.14 in) long, fused with others in a spherical head up to 16 mm (0.63 in) long in diameter.[2][3]
Taxonomy
Isopogon scabriusculus was first formally described in 1856 by Carl Meissner in de Candolle's Prodromus Systematis Naturalis Regni Vegetabilis.[4][5] (Meissner had previously published the name Isopogon scabriusculus in 1852 but without a description.)[6][7]
In 1995, Donald Bruce Foreman described three subspecies of I. scabriusculus in Flora of Australia and the names are accepted at the Australian Plant Census.[3]
- Isopogon scabriusculus subsp. pubifloris Foreman[8] is a shrub up to 1.2 m (3 ft 11 in) tall with simple, cylindrical leaves up to 130 mm (5.1 in) long, hairy pink flowers up to 16 mm (0.63 in) long from September to November, and fruiting cones up to about 12 mm (0.47 in) diameter.[9][10]
- Isopogon scabriusculus Meisn. subsp. scabriusculus[11] is a shrub up to 2 m (6 ft 7 in) tall with flat, sometimes three-lobed leaves up to 180 mm (7.1 in) long, glabrous pink flowers up to 15 mm (0.59 in) long from July to October, and fruiting cones up to about 16 mm (0.63 in) diameter.[12][13]
- Isopogon scabriusculus subsp. stenophyllus Foreman[14] is a shrub up to 1.5 m (4 ft 11 in) tall with simple, grooved leaves oval in cross-section, up to 160 mm (6.3 in) long, glabrous red or pink flowers up to 15 mm (0.59 in) long from July to October, and fruiting cones about 12 mm (0.47 in) diameter.[15][16]
The specific epithet (scabriusculus) means "minutely scabrous",[17]:301 pubiflorus means "softly hairy-flowered"[17]:377 and stenophyllus means "narrow-leaved".[17]:382
Distribution and habitat
Isopogon scabriusculus is widespread in the south-west of Western Australia where it grows on sandplains and ridges. Subspecies pubifloris grows in scrub, shrubland and woodland between Hyden, Southern Cross, Coolgardie, Lake King and the Frank Hann National Park.[9][10] Subspecies scabriusculus grows in mallee, scrub and heath between Mullewa and Newdegate[12][13] and subspecies stenophyllus grows in heath and shrubland, mainly between Wubin, Southern Cross and Newdegate.[15][16]
Conservation status
All three subspecies of I. scabriusculus are classified as "not threatened" by the Western Australian Government Department of Parks and Wildlife.[10][13][16]
References
- ↑ 1.0 1.1 "Isopogon scabriusculus". Australian Plant Census. https://biodiversity.org.au/nsl/services/apc-format/display/101269.
- ↑ "Isopogon scabriusculus". FloraBase. Western Australian Government Department of Parks and Wildlife. https://florabase.dpaw.wa.gov.au/browse/profile/2236.
- ↑ 3.0 3.1 Foreman, David B.. "Isopogon scabriusculus". Australian Biological Resources Study, Department of Agriculture, Water and the Environment: Canberra. https://profiles.ala.org.au/opus/foa/profile/Isopogon%20scabriusculus.
- ↑ "Isopogon scabriusculus". APNI. https://id.biodiversity.org.au/instance/apni/528781.
- ↑ Meissner, Carl; de Candolle, Augustus P. (1856). Prodromus Systematis Naturalis Regni Vegetabilis. Paris: Sumptibus Victroris Masson. pp. 276–277. https://bibdigital.rjb.csic.es/viewer/14922/?offset=#page=286&viewer=picture&o=bookmark&n=0&q=. Retrieved 27 November 2020.
- ↑ "Isopogon scabriusculus". APNI. https://id.biodiversity.org.au/instance/apni/51293473.
- ↑ Meissner, Carl (1852). "A list of Proteaceae collected in south-western Australia by Mr James Drummond.". Hooker's Journal of Botany and Kew Garden Miscellany 4: 182. https://www.biodiversitylibrary.org/item/6322#page/189/mode/1up. Retrieved 27 November 2020.
- ↑ "Isopogon scabriusculus subsp. pubifloris". Australian Plant Census. https://biodiversity.org.au/nsl/services/apc-format/display/141871.
- ↑ 9.0 9.1 Foreman, David B.. "Isopogon scabriusculus subsp. pubifloris". Australian Biological Resources Study, Department of Agriculture, Water and the Environment: Canberra. https://profiles.ala.org.au/opus/foa/profile/Isopogon%20scabriusculus%20subsp.%20pubifloris.
- ↑ 10.0 10.1 10.2 "Isopogon scabriusculus subsp. pubifloris". FloraBase. Western Australian Government Department of Parks and Wildlife. https://florabase.dpaw.wa.gov.au/browse/profile/16812.
- ↑ "Isopogon scabriusculus subsp. scabriusculus". Australian Plant Census. https://biodiversity.org.au/nsl/services/apc-format/display/141870.
- ↑ 12.0 12.1 Foreman, David B.. "Isopogon scabriusculus subsp. scabriusculus". Australian Biological Resources Study, Department of Agriculture, Water and the Environment: Canberra. https://profiles.ala.org.au/opus/foa/profile/Isopogon%20scabriusculus%20subsp.%20scabriusculus.
- ↑ 13.0 13.1 13.2 "Isopogon scabriusculus subsp. scabriusculus". FloraBase. Western Australian Government Department of Parks and Wildlife. https://florabase.dpaw.wa.gov.au/browse/profile/14437.
- ↑ "Isopogon scabriusculus subsp. pubifloris". Australian Plant Census. https://biodiversity.org.au/nsl/services/apc-format/display/141315.
- ↑ 15.0 15.1 Foreman, David B.. "Isopogon scabriusculus subsp. stenophyllus". Australian Biological Resources Study, Department of Agriculture, Water and the Environment: Canberra. https://profiles.ala.org.au/opus/foa/profile/Isopogon%20scabriusculus%20subsp.%20stenophyllus.
- ↑ 16.0 16.1 16.2 "Isopogon scabriusculus subsp. stenophyllus". FloraBase. Western Australian Government Department of Parks and Wildlife. https://florabase.dpaw.wa.gov.au/browse/profile/14436.
- ↑ 17.0 17.1 17.2 Sharr, Francis Aubi; George, Alex (2019). Western Australian Plant Names and Their Meanings (3rd ed.). Kardinya, WA: Four Gables Press. ISBN 9780958034180.
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