Grevillea parviflora explained

Grevillea parviflora, commonly known as small-flower grevillea,^[1] is a species of flowering plant in the family Proteaceae and is endemic to the Sydney region of eastern New South Wales. It is a low, dense, spreading to erect shrub with more or less linear leaves and white flowers with a red style that sometimes turns red as it ages.

Description

Grevillea parviflora is a dense, spreading to erect shrub that typically grows to a height of or less and sometimes forms a rhizome. Its leaves are more or less linear, mostly long and wide with the edges turned down or rolled, the lower surface silky hairy when visible. The flowers are arranged in groups of 4 to 14 on the ends of branches, the groups usually shorter than the nearby leaves. The flowers are white with rust-coloured hairs, the style sometimes turning red with age, the pistil usually long. Flowering occurs from July to December and the fruit is a glabrous, warty follicle long.^{[2] [3]}

Taxonomy

Grevillea parviflora was first formally described in 1810 by Robert Brown in Transactions of the Linnean Society of London.^{[4] [5]} The specific epithet (parviflora) means "small-flowered".^[6]

In 2000, Robert Owen Makinson described two subspecies of G. parviflora in the Flora of Australia, and the names are accepted by the Australian Plant Census:

• Grevillea parviflora subsp. parviflora Makinson^[7] has more or less erect main branches, leaves mostly wide and the "stalk" of the ovary long.^{[8] [9]}
• Grevillea parviflora R.Br. subsp. supplicans^[10] has more or less spreading main branches, leaves mostly wide and the "stalk" of the ovary long.^{[11] [12]}

Distribution and habitat

This grevillea grows heath or shrubby or heathy woodland in the Sydney region. Subspecies parviflora is mostly found west and south of Sydney between Camden, Appin and Cordeaux Dam with disjunct populations near Putty, Cessnock and Cooranbong. Subspecies supplicans occurs north-west of Sydney near Arcadia, Maroota and Marramarra National Park.

Conservation status

Subspecies parviflora is listed as "vulnerable" under the Australian Government Environment Protection and Biodiversity Conservation Act 1999 and the New South Wales Government Biodiversity Conservation Act 2016 and subsp. supplicans as "endangered" under the Biodiversity Conservation Act 2016.

Notes and References

1. Web site: Approved Conservation Advice for Grevillea parviflora subsp. parviflora (Small-flower Grevillea) . Australian Government Department of Agriculture, Water and the Environment . 9 August 2022.
2. Web site: Makinson . Robert O. . Grevillea parviflora . Royal Botanic Garden Sydney . 30 July 2022.
3. Web site: Grevillea parviflora . Australian Biological Resources Study, Department of Agriculture, Water and the Environment: Canberra . 8 August 2022.
4. Web site: Grevillea parviflora. APNI. 8 August 2022.
5. Brown . Robert . On the Proteaceae of Jussieu . Transactions of the Linnean Society of London . 1810 . 10 . 1 . 171 . 8 August 2022.
6. Book: Sharr . Francis Aubi . George . Alex . Western Australian Plant Names and Their Meanings . 2019 . Four Gables Press . Kardinya, WA . 9780958034180 . 271 . 3rd.
7. Web site: Grevillea parviflora subsp. parviflora. Australian Plant Census. 9 August 2022.
8. Web site: Makinson . Robert O. . Grevillea parviflora subsp. parviflora . Royal Botanic Garden Sydney . 9 August 2022.
9. Web site: Grevillea parviflora subsp. parviflora . Australian Biological Resources Study, Department of Agriculture, Water and the Environment: Canberra . 9 August 2022.
10. Web site: Grevillea parviflora subsp. supplicans. Australian Plant Census. 9 August 2022.
11. Web site: Makinson . Robert O. . Grevillea parviflora subsp. supplicans . Royal Botanic Garden Sydney . 9 August 2022.
12. Web site: Grevillea parviflora subsp. supplicans . Australian Biological Resources Study, Department of Agriculture, Water and the Environment: Canberra . 9 August 2022.