Grevillea corrugata

Grevillea corrugata
In Maranoa Gardens
Scientific classification Edit this classification
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Order: Proteales
Family: Proteaceae
Genus: Grevillea
Species:
G. corrugata
Binomial name
Grevillea corrugata

Grevillea corrugata is a species of flowering plant in the family Proteaceae and is endemic to a restricted area in the south-west of Western Australia. It is a dense shrub with deeply divided leaves usually with three to five sharply-pointed, linear lobes, and white to cream-coloured flowers.

Description

Grevillea corrugata is a dense shrub typically 0.5–2.5 m (1 ft 8 in – 8 ft 2 in) high and 1.5–2 m (4 ft 11 in – 6 ft 7 in) wide. Its leaves are usually deeply divided, 40–60 mm (1.6–2.4 in) long and 90 mm (3.5 in) wide in flattened outline. The leaves have three to five sharply-pointed, linear lobes usually divided again, the ultimate lobes 15–35 mm (0.59–1.38 in) long and 0.7–0.8 mm (0.028–0.031 in) wide. The flowers are white to cream-coloured and arranged in more or less sessile, spherical to oval groups on a rachis 8–20 mm (0.31–0.79 in) long, the pistil 3.5–4.0 mm (0.14–0.16 in) long. Flowering has been observed in August and September and the fruit is a wrinkled, oblong follicle 7–11 mm (0.28–0.43 in) long.[4][5][6]

Taxonomy

Grevillea corrugata was first formally described in 1993 by Peter M. Olde and Neil R. Marriott in the journal Nuytsia from specimens collected by Olde near Bindoon in 1992.[6][7] The specific epithet (corrugata) means "strongly wrinkled", referring to the surface of the fruit.[6]

Distribution and habitat

This grevillea is only known from the type location where it grows in disturbed eucalypt woodland.[4]

Conservation status

Grevillea corrugata is listed as Endangered on the IUCN Red List of Threatened Species, as well as under the Australian Government Environment Protection and Biodiversity Conservation Act 1999 and "Threatened" by the Western Australian Government Department of Parks and Wildlife. It has a small and highly restricted distribution with an estimated extent of occurrence of 394km² and a population of approximately 330 mature individuals. Threats to this species include pollution from chemical spraying, competition with invasive weeds and habitat clearing and fragmentation for agriculture.[1][5][2][8]

References

  1. ^ a b Keighery, G.; Makinson, R.; Monks, L. (2020). "Grevillea corrugata". IUCN Red List of Threatened Species. 2020: e.T112650818A113307821. doi:10.2305/IUCN.UK.2020-3.RLTS.T112650818A113307821.en. Retrieved 28 December 2023.
  2. ^ a b "Approved Conservation Advice for Grevillea corrugata (a shrub)" (PDF). Australian Government Department of Primary Industries, Water and the Environment. Retrieved 7 March 2022.
  3. ^ "Grevillea corrugata". Australian Plant Census. Retrieved 6 March 2022.
  4. ^ a b "Grevillea corrugata". Australian Biological Resources Study, Department of Agriculture, Water and the Environment: Canberra. Retrieved 6 March 2022.
  5. ^ a b "Grevillea corrugata". FloraBase. Western Australian Government Department of Biodiversity, Conservation and Attractions.
  6. ^ a b c Olde, Peter M.; Marriott, Neil R. (1993). "New species and taxonomic changes in Grevillea (Proteaceae: Grevilleoideae) from south-west Western Australia". Nuytsia. 9 (2): 247–249. Retrieved 6 March 2022.
  7. ^ "Grevillea confertifolia". APNI. Retrieved 6 March 2022.
  8. ^ "Conservation codes for Western Australian Flora and Fauna" (PDF). Government of Western Australia Department of Parks and Wildlife. Retrieved 6 March 2022.