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Grevillea linearifolia

From Wikipedia, the free encyclopedia

Grevillea linearifolia
In the Ku-ring-gai Wildflower Garden, Sydney
Scientific classification Edit this classification
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Order: Proteales
Family: Proteaceae
Genus: Grevillea
Species:
G. linearifolia
Binomial name
Grevillea linearifolia
Synonyms[2]
List
    • Embothrium lineare Andrews
    • Embothrium linearifolium Cav.
    • Embothrium sericeum var. angustifolium Sm.
    • Grevillea linearifolia f. 'Typical form'
    • Grevillea linearifolia f. 'e' (Broader-leaved Sydney form)
    • Grevillea linearifolia f. Hawkesbury Sandstone form
    • Grevillea linearis R.Br. nom. illeg.
    ? * Grevillea linearis var. alba Page nom. inval., nom. nud. ? * Grevillea linearis var. alba Lodd., G.Lodd. & W.Lodd.
    • Grevillea linearis var. incarnata Sims nom. illeg.
    • Grevillea linearis R.Br. var. linearis
    ? * Grevillea linearis var. rubra Page nom. inval., nom. nud.
    • Lysanthe linearifolia (Cav.) Knight

Grevillea linearifolia, commonly known as linear-leaf grevillea,[3] is a species of flowering plant in the family Proteaceae and is endemic to New South Wales. It is an open, erect shrub with linear to narrowly elliptic leaves, and clusters of white flowers.

Description

Grevillea linearifolia is an erect, open shrub that typically grows to a height of 1–2 m (3 ft 3 in – 6 ft 7 in) and has ridged, silky-hairy branchlets. Its leaves are linear to narrowly elliptic, mostly 50–90 mm (2.0–3.5 in) long and 1–3 mm (0.039–0.118 in) wide, sometimes arranged singly, or in clusters of three. The flowers are arranged, usually in large groups held above the leaves, on the ends of branches on a peduncle 1–20 mm (0.039–0.787 in) long. The flowers are white, silky-hairy on the outside, sometimes with a faint pink tinge, and the pistil is 7–13 mm (0.28–0.51 in) long with a hooked style. Flowering mainly occurs from August to December, but also sporadically in other months and the fruit is a narrowly oval follicle 13–15 mm (0.51–0.59 in) long.[3][4]

Taxonomy

This species was first formally described in 1798 by Cavanilles, who gave it the name Embothrium linearifolium in his Icones et Descriptiones Plantarum from specimens collected near Port Jackson.[5][6] In George Druce changed the name to Grevillea linearifolia in the supplement to The Botanical Exchange Club and Society of the British Isles Report for 1916.[7][8] The specific epithet (linearifolia) means "linear-leaved".[9]

The taxonomic limits of G. linearifolia are difficult to establish. In addition to variations between populations, the species is said to form "an intergrading complex" with G. parviflora,[10] and may intergrade with G. patulifolia and/or G. humilis subsp. humilis. It is also known to hybridise often with G. sericea, and occasional hybrids with G. diffusa subsp. filipendula have also been reported.[4]

Distribution and habitat

Linear-leaved grevillea grows in moist but well-drained soils, mostly sandy soils over sandstone amongst shrubby eucalypt woodland. It occurs mainly from Gosford and Putty, south to the Parramatta River and Port Jackson. There are also some disjunct populations that differ slightly from the Gosford form, but have been placed provisionally in this species. These occur near Lawson in the lower Blue Mountains, just inland from Ulladulla, and near Nowra.[4] Records of the species from Victoria are considered to be to a range of other species, specifically G. alpivaga, G. neurophylla, G. patulifolia, G. gariwerdensis and G. micrantha.[11]

References

  1. ^ Auld, T.; Keith, D. (2020). "Grevillea linearifolia". IUCN Red List of Threatened Species. 2020: e.T113030227A113309480. doi:10.2305/IUCN.UK.2020-3.RLTS.T113030227A113309480.en. Retrieved 27 November 2022.
  2. ^ a b "Grevillea linearifolia". Australian Plant Census. Retrieved 20 June 2022.
  3. ^ a b Makinson, Robert O. "Grevillea linearifolia". Royal Botanic Garden Sydney. Retrieved 20 June 2022.
  4. ^ a b c "Grevillea linearifolia". Australian Biological Resources Study, Department of Agriculture, Water and the Environment: Canberra. Retrieved 20 June 2022.
  5. ^ "Embothrium linearifolium". APNI. Retrieved 20 June 2022.
  6. ^ Cavanilles, Antonio J. (1798). Icones et Descriptiones Plantarum. Vol. 4. pp. 59–60. Retrieved 20 June 2022.
  7. ^ "Grevillea linearifolia". APNI. Retrieved 20 June 2022.
  8. ^ Druce, George C. (1917). "Nomenclatorial Notes: chiefly African and Australian". The Botanical Exchange Club and Society of the British Isles Report for 1916, Suppl. 2. 4: 625. Retrieved 20 June 2022.
  9. ^ Sharr, Francis Aubi; George, Alex (2019). Western Australian Plant Names and Their Meanings (3rd ed.). Kardinya, WA: Four Gables Press. p. 240. ISBN 9780958034180.
  10. ^ Carolin, Roger C. (1994). Flora of the Sydney region (4th ed.). Chatswood, NSW: Reed. p. 271. ISBN 0730104001.
  11. ^ "Grevillea linearifolia". Royal Botanic Gardens Victoria. Retrieved 20 June 2022.
This page was last edited on 31 January 2024, at 01:17
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