Grevillea flexuosa

Grevillea flexuosa, commonly known as zigzag grevillea[1] or tangled grevillea,[2] is an endangered shrub endemic to Western Australia.

Zigzag grevillea
Scientific classification
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Order: Proteales
Family: Proteaceae
Genus: Grevillea
Species:
G. flexuosa
Binomial name
Grevillea flexuosa

Description

It grows as an irregular shrub up to two metres high, with few branches and no lignotuber. Flowers are cream or yellow and occur in inflorescences typical of Grevillea.[2]

Taxonomy

This species was first published as Anadenia flexuosa by John Lindley in his 1839 A Sketch of the Vegetation of the Swan River Colony, based on unspecified material. Lindley referred to it there as "a singular species, allied to A. pulchella, with most curious zigzag leaves".[3] In 1845, Anadenia was demoted to a section of Grevillea by Carl Meissner,[4] and this species was thus transferred to Grevillea as Grevillea flexuosa (Lindl.) Meisn..[5][6] It has since had a fairly uncomplicated taxonomic history, the only incident being the publication by George Bentham in 1870 of a variety, G. flexuosa var. pauciloba, which was subsequently found to be a taxonomic synonym of G. synapheae.[7]

Distribution and habitat

It occurs only within a small area east of Perth, in the Jarrah Forest biogeographic region. The soil of area is red-brown sand over laterite or granite.[2]

Ecology

It has been gazetted as "rare" under Western Australia's Wildlife Conservation Act 1950,[2] and "vulnerable" under the federal Environment Protection and Biodiversity Conservation Act 1999.[1]

References
  1. Grevillea flexuosa — Zig Zag Grevillea, Species Profile and Threats Database, Department of the Environment and Heritage, Australia.
  2. "Grevillea flexuosa (Lindl.) Meisn". FloraBase. Western Australian Government Department of Parks and Wildlife.
  3. Lindley, John (1839). "A Sketch of the Vegetation of the Swan River Colony". Appendix to the first twenty-three volumes of Edwards's Botanical Register. London: James Ridgeway.
  4. "Anadenia R.Br". Australian Plant Name Index (APNI), IBIS database. Centre for Plant Biodiversity Research, Australian Government.
  5. "Anadenia flexuosa Lindl". Australian Plant Name Index (APNI), IBIS database. Centre for Plant Biodiversity Research, Australian Government.
  6. "Grevillea flexuosa (Lindl.) Meisn". Australian Plant Name Index (APNI), IBIS database. Centre for Plant Biodiversity Research, Australian Government.
  7. "Grevillea flexuosa var. pauciloba Benth". Australian Plant Name Index (APNI), IBIS database. Centre for Plant Biodiversity Research, Australian Government.
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