Grevillea wickhamii

Grevillea wickhamii is an erect shrub or spindly tree, that typically grows to a height of {{cvt|1–6|m}} and has smooth bark. Its leaves are holly-like, broadly egg-shaped in outline, {{cvt|30–90|mm}} long and {{cvt|25–55|mm}} wide, with 2 to 7 shallow, pointed teeth near the tip of the leaves. The flowers are arranged in leaf axils or on the stems in down-curved, sometimes branched clusters, the end groups on a rachis mostly {{cvt|10–70|mm}} long, each flower on a pedicel usually {{cvt|2–6|mm}} long. Flower colour and flowering period vary with subspecies, and the pistil is {{cvt|5–10|mm}} long. The fruit is an oblong, glabrous follicle {{cvt|10–20|mm}} long.{{cite web |title=Grevillea wickhamii |url=https://profiles.ala.org.au/opus/foa/profile/Grevillea%20wickhamii |publisher=Australian Biological Resources Study, Department of Agriculture, Water and the Environment: Canberra |access-date=19 April 2023}}{{cite book |last1=Wrigley |first1=John W. |last2=Fagg |first2=Murray A. |title=Banksias, waratahs & grevilleas : and all other plants in the Australian Proteaceae family |date=1991 |publisher=Angus & Robertson |location=North Ryde, NSW, Australia |isbn=0207172773 |pages=349}}

Grevillea wickhamii was described in 1856 by Carl Meissner in de Candolle's Prodromus Systematis Naturalis Regni Vegetabilis from specimens collected by John Clements Wickham in northern Australia during the Second voyage of HMS Beagle.{{cite web|title=Grevillea wickhamii|url= https://id.biodiversity.org.au/instance/apni/477550|publisher=APNI|access-date=19 April 2023}}{{cite book |last1=Meissner |first1=Carl |last2=de Candolle |first2=Augustin P. |title=Prodromus Systematis Naturalis Regni Vegetabilis |date=1857 |location=Paris |page=380 |url=https://www.biodiversitylibrary.org/item/257288#page/388/mode/1up |access-date=18 April 2023}} The specific epithet (wickhamii) honours the collector of the type specimens.{{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=339 |edition=3rd}}

The names of 6 subspecies of G. wickhamii are accepted by the Australian Plant Census:

• Grevillea wickhamii subsp. aprica McGill.{{cite web |title=Grevillea wickhamii subsp. aprica |url=https://biodiversity.org.au/nsl/services/apc-format/display/68481 |publisher=Australian Plant Census |access-date= 19 April 2023}} flowers in most months, with a peak from May to August, and has red or orange flowers.{{cite web |title=Grevillea wickhamii subsp. aprica |url=https://profiles.ala.org.au/opus/foa/profile/Grevillea%20wickhamii%20subsp.%20aprica |publisher=Australian Biological Resources Study, Department of Agriculture, Water and the Environment: Canberra |access-date=19 April 2023}}{{FloraBase|name= Grevillea wickhamii subsp. aprica|id=13440}}{{cite web |title=Grevillea wickhamii subsp. aprica |url=http://eflora.nt.gov.au/factsheet?id=5062 |publisher=Northern Territory Government |access-date=19 April 2023}}
• Grevillea wickhamii subsp. cratista Makinson{{cite web |title=Grevillea wickhamii subsp. cratista |url=https://biodiversity.org.au/nsl/services/apc-format/display/68479 |publisher=Australian Plant Census |access-date= 19 April 2023}} flowers in July, and has red to deep pink flowers.{{cite web |title=Grevillea wickhamii subsp. cratista |url=https://profiles.ala.org.au/opus/foa/profile/Grevillea%20wickhamii%20subsp.%20cratista |publisher=Australian Biological Resources Study, Department of Agriculture, Water and the Environment: Canberra |access-date=19 April 2023}}{{FloraBase|name= Grevillea wickhamii subsp. cratista|id=19476}}
• Grevillea wickhamii subsp. hispidula Makinson{{cite web |title=Grevillea wickhamii subsp. hispidula |url=https://biodiversity.org.au/nsl/services/apc-format/display/155987 |publisher=Australian Plant Census |access-date= 19 April 2023}} flowers from May to August, and has yellow or bright red flowers.{{cite web |title=Grevillea wickhamii subsp. hispidula |url=https://profiles.ala.org.au/opus/foa/profile/Grevillea%20wickhamii%20subsp.%20hispidula |publisher=Australian Biological Resources Study, Department of Agriculture, Water and the Environment: Canberra |access-date=19 April 2023}}{{FloraBase|name= Grevillea wickhamii subsp. hispidula|id=19478}}
• Grevillea wickhamii subsp. macrodonta Makinson{{cite web |title=Grevillea wickhamii subsp. macrodonta |url=https://biodiversity.org.au/nsl/services/apc-format/display/155662 |publisher=Australian Plant Census |access-date= 19 April 2023}} flowers in December and from April to August, and has red to deep orange or yellow flowers, with a yellow style.{{cite web |title=Grevillea wickhamii subsp. macrodonta |url=https://profiles.ala.org.au/opus/foa/profile/Grevillea%20wickhamii%20subsp.%20macrodonta |publisher=Australian Biological Resources Study, Department of Agriculture, Water and the Environment: Canberra |access-date=19 April 2023}}{{FloraBase|name= Grevillea wickhamii subsp. macrodonta|id=19074}}
• Grevillea wickhamii subsp. pallida Makinson{{cite web |title=Grevillea wickhamii subsp. pallida |url=https://biodiversity.org.au/nsl/services/apc-format/display/163928 |publisher=Australian Plant Census |access-date= 19 April 2023}} flowers in December and from May to June, and has lemon yellow flowers, with a pale yellow style.{{cite web |title=Grevillea wickhamii subsp. pallida |url=https://profiles.ala.org.au/opus/foa/profile/Grevillea%20wickhamii%20subsp.%20pallida |publisher=Australian Biological Resources Study, Department of Agriculture, Water and the Environment: Canberra |access-date=19 April 2023}}{{FloraBase|name= Grevillea wickhamii subsp. pallida|id=19077}}
• Grevillea wickhamii Meisn. subsp. wickhamii{{cite web |title=Grevillea wickhamii subsp. wickhamii |url=https://biodiversity.org.au/nsl/services/apc-format/display/68488 |publisher=Australian Plant Census |access-date= 19 April 2023}} flowers from April to August, and has red flowers, with a yellow style.{{cite web |title=Grevillea wickhamii subsp. wickhamii |url=https://profiles.ala.org.au/opus/foa/profile/Grevillea%20wickhamii%20subsp.%20wickhamii |publisher=Australian Biological Resources Study, Department of Agriculture, Water and the Environment: Canberra |access-date=19 April 2023}}{{FloraBase|name= Grevillea wickhamii subsp. wickhamii|id=13441}}

Wickham's grevillea is widespread in northern Western Australia, in inland regions of the Northern Territory and in western Queensland.

• Subspecies aprica grows in open woodland or spinifex communities mainly from south of the Kimberley, in the northern Territory south from Larrimah, and in a few locations in western Queensland.
• Subspecies cratista is only known from the Bungle Bungle Range where it grows in rocky places in grassy woodland.
• Subspecies hispidula grows in open woodland and spinifex communities, often near drainage lines, and is found in the Hamersley Range and Pilbara areas, and east to Kumpupintil Lake and Windy Corner in the Dampierland, Gibson Desert, Great Sandy Desert, Little Sandy Desert and Pilbara bioregions of northern Western Australia.
• Subspecies macrodonta grows in low, open woodland and shrubland on low hills and rocky places in north-western Western Australia, in near-coastal areas between Broome and Goldsworthy, and east to Derby, in the Central Kimberley, Dampierland, Great Sandy Desert and Pilbara bioregions.
• Subspecies pallida is only known from near the tidal limit of the Prince Regent River where it grows in woodland near creeks.
• Subspecies wickhamii grows in open shrubland on sandstone and quartzite outcrops and on the edge of plateaux in the Central Kimberley, Dampierland, Great Sandy Desert, Northern Kimberley bioregions of northern Western Australia.

All 6 subspecies of G. wickhamii are listed as "not threatened" by the Government of Western Australia Department of Biodiversity, Conservation and Attractions.

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{{Taxonbar|from1=Q2710394|from2=Q66104429|from3=Q66104430|from4=Q66104432|from5=Q66104434|from6=Q66104435|from7=Q100453520}}

wickhamii

Category:Flora of the Northern Territory

Category:Flora of Queensland

Category:Eudicots of Western Australia

Category:Proteales of Australia

Category:Taxa named by Carl Meissner

Category:Plants described in 1856