Grevillea incurva

{{Short description|Species of shrub in the family Proteaceae endemic to Western Australia}}

{{Speciesbox

| image =

| status = CR

| status_system = IUCN3.1

| status_ref =

| genus = Grevillea

| species = incurva

| authority = (Diels) Olde & Marriott{{cite web|title=Grevillea incurva|url= https://biodiversity.org.au/nsl/services/apc-format/display/165163|publisher=Australian Plant Census|access-date=24 May 2022}}

}}

Grevillea incurva is a species of flowering plant in the family Proteaceae and is endemic to inland south-western Western Australia. It is an erect shrub with linear adult leaves and clusters of creamy-yellow flowers.

Description

Grevillea incurva is an erect shrub that typically grows to a height of {{cvt|1.5–2.5|m}} and has silky-hairy branchlets. Its adult leaves are linear mostly {{cvt|10–20|mm}} long and {{cvt|0.7–1|mm}} long with the edges curved upwards. The flowers are arranged in leaf axils or on the ends of branches in cylindrical clusters {{cvt|24–45|mm}} long and are creamy-yellow, the pistil {{cvt|5.5–6.0|mm}} long. Flowering occurs in late spring and the fruit is a smooth oval follicle {{cvt|7.5–10|mm}} long.{{FloraBase|name=Grevillea incurva|id=15974}}{{cite web |title=Grevillea incurva |url=https://profiles.ala.org.au/opus/foa/profile/Grevillea%20incurva |publisher=Australian Biological Resources Study, Department of Agriculture, Water and the Environment: Canberra |access-date=24 May 2022}}

Taxonomy

This grevillea was first formally described in 1904 by Ludwig Diels who gave it the name Grevillea integrifolia var. incurva in Ernst Georg Pritzel's Botanische Jahrbücher für Systematik, Pflanzengeschichte und Pflanzengeographie.{{cite web|title=Grevillea integrifolia var. incurva|url= https://id.biodiversity.org.au/instance/apni/481489|publisher=APNI|access-date=24 May 2022}}{{cite journal |last1=Diels |first1=Ludwig |title=Fragmenta Phytographiae Australiae occidentalis. Beitrage zur Kenntnis der Pflanzen Westaustraliens, ihrer Verbreitung und ihrer Lebensverhaltnisse |journal=Botanische Jahrbücher für Systematik, Pflanzengeschichte und Pflanzengeographie |date=1904 |volume=35 |issue=1 |page=157 |url=https://www.biodiversitylibrary.org/item/660#page/162/mode/1up |access-date=24 May 2022}} In 1994 Peter M. Olde and Neil R. Marriott raised the variety to species status as Grevillea incurva in The Grevillea Book.{{cite web|title=Grevillea incurva|url= https://id.biodiversity.org.au/instance/apni/559559|publisher=APNI|access-date=24 May 2022}}

The specific epithet (incurva) means "curved upwards", referring to the leaves.{{cite book |last1=Sharr |first1=Francis Aubi |last2=George |first2=Alex |title=Western Australian Plant Names and Their Meanings |date=2019 |publisher=Four Gables Press |location=Kardinya, WA |isbn=9780958034180 |page=223 |edition=3rd}}

Distribution and habitat

Grevillea incurva grows on sandy soil in heath between Meckering, Kellerberrin and Harrismith in the Avon Wheatbelt bioregion of inland south-western Western Australia.

Conservation status

Grevillea incurva has two vastly different conservation statuses. While it is listed as Critically Endangered by the International Union for Conservation of Nature,{{cite iucn |author=Keighery, G. |author2=Makinson, R. |year=2020 |title=Grevillea incurva |volume=2020 |page=e.T113021475A113308126 |doi=10.2305/IUCN.UK.2020-2.RLTS.T113021475A113308126.en |access-date=25 January 2024}} the Government of Western Australia Department of Biodiversity, Conservation and Attractions lists the species as "not threatened".

See also

References