Grevillea manglesii explained

Grevillea manglesii is a species of flowering plant in the family Proteaceae and is endemic to an area around Perth in Western Australia. It is a spreading shrub with divided leaves, with triangular or linear lobes, and clusters of cream-coloured or white flowers.

Description

Grevillea manglesii is a spreading shrub that typically grows to high and up to wide and has long, straight branches. The leaves are long and wide with three lobes, the lobes triangular or linear, sometimes further divided near the tip. The flowers are cream-coloured or white, the pistil long. Flowering period depends on subspecies, and the fruit is an oblong to oval follicle long.^[1]

Taxonomy

Grevillea manglesii was first formally described in 1838 by Pierre Denis Pépin in the journal Annales de flore et de pomone :ou journal des jardins et des champs.^{[2] [3]} The specific epithet (manglesii) honours James Mangles.^[4]

The species was later described by Robert Graham who gave it the name Anadenia manglesii in the Edinburgh New Philosophical Journal in 1839.^[5]

The names of three subspecies are accepted by the Australian Plant Census:

• Grevillea manglesii subsp. dissectifolia (McGill.) McGill.^[6] has leaves long and wide, with three lobes that are further divided, the end lobes linear, long, wide, and white flowers, sometimes with a pink tinge, from June to November.^[7]
• Grevillea manglesii (Graham) Planch. subsp. manglesii^[8] has leaves long and wide, usually with three lobes that are sometimes further divided, the end lobes triangular, long, wide, and white to cream-coloured flowers in most months, peaking from June to November.^[9]
• Grivillea manglesii subsp. ornithopoda (Meisn.) McGill.^[10] has leaves long and wide with three triangular lobes, long, wide, and white to cream-coloured flowers from May to November.^[11]

Distribution and habitat

Grevillea manglesii grows on granite outcrops and on roadsides near Perth in the Avon Wheatbelt, Jarrah Forest, Swan Coastal Plain and Warren bioregions of south-western Western Australia.

Conservation status

This grevillea is listed as "not threatened" by the Government of Western Australia Department of Biodiversity, Conservation and Attractions.

Use in horticulture

This species is hardy in cultivation, including in humid areas and has proved useful as a screening shrub. It will grow in both full sun and part shade and prefers a well-drained situation.^[12]

Notes and References

1. Web site: Grevillea manglesii . Australian Biological Resources Study, Department of Agriculture, Water and the Environment: Canberra . 29 June 2022.
2. Web site: Grevillea manglesii. APNI. 30 June 2022.
3. Pépin . Pierre Denis . Visite au jardin de Fromont, près Ris. . Annales de Flore et de Pomone; ou journal des jardins et des champs . 1838 . 6 . 381 . 30 June 2022.
4. Book: Sharr . Francis Aubi . George . Alex . Western Australian Plant Names and Their Meanings . 2019 . Four Gables Press . Kardinya, WA . 9780958034180 . 247–248. 3rd.
5. Web site: Anadenia manglesii. APNI. 30 June 2022.
6. Web site: Grevillea manglesii subsp. dissectifolia. Australian Plant Census. 30 June 2022.
7. Web site: Grevillea manglesii subsp. dissectifolia . Australian Biological Resources Study, Department of Agriculture, Water and the Environment: Canberra . 30 June 2022.
8. Web site: Grevillea manglesii subsp. manglesii. Australian Plant Census. 30 June 2022.
9. Web site: Grevillea manglesii subsp. manglesii . Australian Biological Resources Study, Department of Agriculture, Water and the Environment: Canberra . 30 June 2022.
10. Web site: Grevillea manglesii subsp. ornithopoda. Australian Plant Census. 30 June 2022.
11. Web site: Grevillea manglesii subsp. ornithopoda . Australian Biological Resources Study, Department of Agriculture, Water and the Environment: Canberra . 30 June 2022.
12. Book: Wrigley, J.W. . Fagg, M.. Banksias, Waratahs & Grevilleas. Collins. Australia . 1989 . 0-7322-0020-2.