Grevillea willisii, commonly known as Omeo grevillea or rock grevillea,[2] is species of flowering plant in the family Proteaceae, and is endemic to the eastern highlands of Victoria, Australia. It is a spreading to erect shrub with pinnatipartite leaves, the end lobes broadly triangular to oblong and sometimes sharply pointed, and dense clusters of greenish-white to fawn-coloured flowers with a white to cream-coloured style.
Grevillea willisii is a spreading to erect shrub that typically grows to 2.0–4.5 m (6 ft 7 in – 14 ft 9 in) high, up to 3 m (9.8 ft) wide and has a generally greyish-green appearance. Its leaves are pinnatipartite, 25–135 mm (0.98–5.31 in) long and 20–65 mm (0.79–2.56 in) wide with 5 to 19 lobes that are sometimes divided up to a further 5 times. The end lobes are triangular to oblong, 5–25 mm (0.20–0.98 in) long and 3–17 mm (0.12–0.67 in) wide and sometimes sharply pointed, the lower surface densely covered with light-coloured, woolly hairs. The flowers are arranged on the ends of branches in erect clusters on one side of a woolly-hairy rachis 30–85 mm (1.2–3.3 in) long, the pistil 11–18 mm (0.43–0.71 in) long. The flowers are greenish-white to fawn-coloured with a white to cream-coloured style. Flowering occurs from September to January and the fruit is a softly-hairy follicle 8–11 mm (0.31–0.43 in) long.[2][3][4][5]
Taxonomyedit
Grevillea willisii first formally described in 1975 by Raymond Vaughan Smith and Donald McGillivray in the journal Muelleria, that was dedicated to commemorate the retirement of James Hamlyn Willis from the "National Herbarium, Melbourne" in 1972. The type specimens were collected by Smith near the bridge over the Bundara River on the Omeo Highway in 1966.[4][6] The specific epithet honours James Hamlyn Willis, the Government Botanist of Victoria.[5]
Buchan River grevillea, (G. pachylostyla) formerly known as G. willisii subsp. pachylostyla, from the upper reaches of the Buchan River, is similar to G. willisii, but was promoted to species status in 1994.[7]
Distribution and habitatedit
Omeo grevillea grows on rocky granite outcrops near streams in the eastern highlands of Victoria, the shorter-leaved form near Omeo in the vicinity of the Mitta Mitta River and its tributaries, and the longer-leaved form near Nariel Creek and Wheelers Creek in the Corryong district.[2][3]
Conservation statusedit
Grevillea willisii is listed as "endangered" under the Victorian Government Flora and Fauna Guarantee Act 1988 and as "rare" in the Department of Environment and Primary Industries 2014 Advisory List of Rare Or Threatened Plants In Victoria.[3][8]
Use in horticultureedit
Plants may be grown to attract birds to a garden, providing both protection for nests and a source of nectar. Plants are occasionally affected by leaf miners or chlorosis of the leaves. The species may be propagated by semi-mature cuttings, which may take up to 5 months to produce roots.[5]
The hybrid cultivarGrevillea 'Poorinda Anticipation' is a cross between G. longifolia and G. willisii.[9] Grevillea 'Poorinda Royal Mantle' is a vigorous cultivar that was bred by Victorian plantsman Leo Hodge and registered in 1978; it is thought to be a hybrid between G. willisii and G laurifolia.[10]
Referencesedit
^ ab"Grevillea willisii". Australian Plant Census. Retrieved 21 April 2023.
^ abc"Grevillea willisii". Australian Biological Resources Study, Department of Agriculture, Water and the Environment: Canberra. Retrieved 21 April 2023.
^ abcMakinson, Robert O.; Stajsic, Val. "Grevillea willisii". Royal Botanic Gardens Victoria. Retrieved 21 April 2023.
^ abSmith, Raymond V.; McGillivray, Donald J. (1975). "Grevillea willisii (Proteaceae) a new Victorian species". Muelleria. 3 (2): 102–111. Retrieved 21 April 2023.
^"Grevillea willisii". APNI. Retrieved 21 April 2023.
^"Grevillea pachylostyla". Australian Biological Resources Study, Department of Agriculture, Water and the Environment: Canberra. Retrieved 21 April 2023.
^"Advisory List of Rare Or Threatened Plants In Victoria - 2014" (PDF). Victorian Government Department of Energy, Environment and Climate Action. Retrieved 21 April 2023.
^"Grevillea 'Poorinda Anticipation'". List of Registered Cultivars derived from Australian native flora. Australian Cultivar Registration Authority. Retrieved 29 December 2012.
^Young, David (29 April 2013) [1979]. "Grevillea 'Poorinda Royal Mantle'". Growing Native Plants. Australian National Botanic Gardens.
January 01, 1970
grevillea, willisii, commonly, known, omeo, grevillea, rock, grevillea, species, flowering, plant, family, proteaceae, endemic, eastern, highlands, victoria, australia, spreading, erect, shrub, with, pinnatipartite, leaves, lobes, broadly, triangular, oblong, . Grevillea willisii commonly known as Omeo grevillea or rock grevillea 2 is species of flowering plant in the family Proteaceae and is endemic to the eastern highlands of Victoria Australia It is a spreading to erect shrub with pinnatipartite leaves the end lobes broadly triangular to oblong and sometimes sharply pointed and dense clusters of greenish white to fawn coloured flowers with a white to cream coloured style Grevillea willisii In the Australian National Botanic Gardens Scientific classification Kingdom Plantae Clade Tracheophytes Clade Angiosperms Clade Eudicots Order Proteales Family Proteaceae Genus Grevillea Species G willisii Binomial name Grevillea willisiiR V Sm amp McGill 1 Synonyms 1 Grevillea sp Rock Grevillea p p Grevillea willisii R V Sm amp McGill subsp willisii Grevillea ramosissima auct non Meisn Stirling J 1883 Habit near the Bundara River Contents 1 Description 2 Taxonomy 3 Distribution and habitat 4 Conservation status 5 Use in horticulture 6 ReferencesDescription editGrevillea willisii is a spreading to erect shrub that typically grows to 2 0 4 5 m 6 ft 7 in 14 ft 9 in high up to 3 m 9 8 ft wide and has a generally greyish green appearance Its leaves are pinnatipartite 25 135 mm 0 98 5 31 in long and 20 65 mm 0 79 2 56 in wide with 5 to 19 lobes that are sometimes divided up to a further 5 times The end lobes are triangular to oblong 5 25 mm 0 20 0 98 in long and 3 17 mm 0 12 0 67 in wide and sometimes sharply pointed the lower surface densely covered with light coloured woolly hairs The flowers are arranged on the ends of branches in erect clusters on one side of a woolly hairy rachis 30 85 mm 1 2 3 3 in long the pistil 11 18 mm 0 43 0 71 in long The flowers are greenish white to fawn coloured with a white to cream coloured style Flowering occurs from September to January and the fruit is a softly hairy follicle 8 11 mm 0 31 0 43 in long 2 3 4 5 Taxonomy editGrevillea willisii first formally described in 1975 by Raymond Vaughan Smith and Donald McGillivray in the journal Muelleria that was dedicated to commemorate the retirement of James Hamlyn Willis from the National Herbarium Melbourne in 1972 The type specimens were collected by Smith near the bridge over the Bundara River on the Omeo Highway in 1966 4 6 The specific epithet honours James Hamlyn Willis the Government Botanist of Victoria 5 Buchan River grevillea G pachylostyla formerly known as G willisii subsp pachylostyla from the upper reaches of the Buchan River is similar to G willisii but was promoted to species status in 1994 7 Distribution and habitat editOmeo grevillea grows on rocky granite outcrops near streams in the eastern highlands of Victoria the shorter leaved form near Omeo in the vicinity of the Mitta Mitta River and its tributaries and the longer leaved form near Nariel Creek and Wheelers Creek in the Corryong district 2 3 Conservation status editGrevillea willisii is listed as endangered under the Victorian Government Flora and Fauna Guarantee Act 1988 and as rare in the Department of Environment and Primary Industries 2014 Advisory List of Rare Or Threatened Plants In Victoria 3 8 Use in horticulture editPlants may be grown to attract birds to a garden providing both protection for nests and a source of nectar Plants are occasionally affected by leaf miners or chlorosis of the leaves The species may be propagated by semi mature cuttings which may take up to 5 months to produce roots 5 The hybrid cultivar Grevillea Poorinda Anticipation is a cross between G longifolia and G willisii 9 Grevillea Poorinda Royal Mantle is a vigorous cultivar that was bred by Victorian plantsman Leo Hodge and registered in 1978 it is thought to be a hybrid between G willisii and G laurifolia 10 References edit a b Grevillea willisii Australian Plant Census Retrieved 21 April 2023 a b c Grevillea willisii Australian Biological Resources Study Department of Agriculture Water and the Environment Canberra Retrieved 21 April 2023 a b c Makinson Robert O Stajsic Val Grevillea willisii Royal Botanic Gardens Victoria Retrieved 21 April 2023 a b Smith Raymond V McGillivray Donald J 1975 Grevillea willisii Proteaceae a new Victorian species Muelleria 3 2 102 111 Retrieved 21 April 2023 a b c Butler Geoff 1993 Grevillea willisii Retrieved 2010 06 06 Grevillea willisii APNI Retrieved 21 April 2023 Grevillea pachylostyla Australian Biological Resources Study Department of Agriculture Water and the Environment Canberra Retrieved 21 April 2023 Advisory List of Rare Or Threatened Plants In Victoria 2014 PDF Victorian Government Department of Energy Environment and Climate Action Retrieved 21 April 2023 Grevillea Poorinda Anticipation List of Registered Cultivars derived from Australian native flora Australian Cultivar Registration Authority Retrieved 29 December 2012 Young David 29 April 2013 1979 Grevillea Poorinda Royal Mantle Growing Native Plants Australian National Botanic Gardens Retrieved from https en wikipedia org w index php title Grevillea willisii amp oldid 1153537340, wikipedia, wiki, book, books, library,
