Grevillea rivularis

Grevillea rivularis, commonly known as Carrington Falls grevillea,[2] is a species of flowering plant in the family Proteaceae and is endemic to New South Wales. It is a dense, spreading shrub with divided leaves with more or less linear, sharply-pointed lobes, and clusters of cream-coloured flowers that turn pink or grey as they age.

Grevillea rivularis
In the Royal Botanic Gardens Victoria
Scientific classification Edit this classification
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Order: Proteales
Family: Proteaceae
Genus: Grevillea
Species:
G. rivularis
Binomial name
Grevillea rivularis

Description

Grevillea rivularis is a dense, glabrous, spreading shrub that typically grows to a height of 1–2.5 m (3 ft 3 in – 8 ft 2 in). Its leaves are divided, 30–60 mm (1.2–2.4 in) long and wide, with 3 to 9 lobes, each lobe with 3 to 5 linear to narrowly triangular lobes 10–30 mm (0.39–1.18 in) long, 1–2.5 mm (0.039–0.098 in) wide and sharply pointed. The edges of the leaves are rolled under, almost enclosing the lower surface apart from the midvein. The flowers are arranged in downturned clusters on one side of a rachis 50–60 mm (2.0–2.4 in) long. The flowers are glabrous, cream-coloured, later pearly pink or grey, the pistil 27–32 mm (1.1–1.3 in) long. Flowering occurs from September to April and the fruit is shaggy hairy follicle 8–10 mm (0.31–0.39 in) long.[2][3][4][5]

Taxonomy

Grevillea rivularis was first formally described in 1975 by Lawrie Johnson and Donald McGillivray in the journal Telopea from specimens collected in 1960 at Carrington Falls by Ernest Francis Constable.[5][6] The specific epithet (rivularis) means "a small stream".[7]

Distribution and habitat

Carrington Falls grevillea grows with other shrubs along creeks and is restricted to Carrington Falls in Budderoo National Park.[4][8]

Conservation status

The species is listed as "endangered" under the Australian Government Environment Protection and Biodiversity Conservation Act 1999[9] and the New South Wales Government Biodiversity Conservation Act 2016. The main threats to the species include its small population size, road and trail management, and inappropriate fire regimes.[8]

References
  1. "Grevillea rivularis". Australian Plant Census. Retrieved 28 December 2022.
  2. "Grevillea rivularis". Australian Biological Resources Study, Department of Agriculture, Water and the Environment: Canberra. Retrieved 28 December 2022.
  3. Wrigley, John W.; Fagg, Murray A. (1991). Banksias, waratahs & grevilleas : and all other plants in the Australian Proteaceae family. North Ryde, NSW, Australia: Angus & Robertson. p. 319. ISBN 0207172773.
  4. Makinson, Robert O. "Grevillea rivularis". Royal Botanic Garden Sydney. Retrieved 28 December 2022.
  5. McGillivray, Donald (17 July 1975). "Australian Proteaceae: new taxa and notes". Telopea. 1 (1): 23. doi:10.7751/telopea19753102.
  6. "Grevillea rivularis". APNI. Retrieved 28 December 2022.
  7. Sharr, Francis Aubi; George, Alex (2019). Western Australian Plant Names and Their Meanings (3rd ed.). Kardinya, WA: Four Gables Press. p. 296. ISBN 9780958034180.
  8. "Carrington Falls Grevillea - profile". New South Wales Government Office of Environment and Heritage. Retrieved 28 December 2022.
  9. "Grevillea rivularis — Carrington Falls Grevillea". Australian Government Department of Climate Change, Energy, the Environment and Water. Retrieved 28 December 2022.
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