Grevillea dryandri explained

Grevillea dryandri is a species of flowering plant in the family Proteaceae and is endemic to northern Australia. It is a spreading to erect shrub with divided leaves with up to seventy or more linear to narrowly elliptic leaves, and long clusters of red, orange-red, pink or white flowers.

Description

Grevillea dryandri is a spreading to erect shrub that typically grows to a height of . It has divided leaves long with mostly ten to sixty linear to narrowly lance-shaped lobes long and wide with the edges turned down or rolled under. The lower surface of the leaflets is silky-hairy. The flowers are arranged in clusters, the rachis long, each flower on a pedicel long. The flowers are red, orange-red, pink or white, the pistil long. Flowering time depends on subspecies and the fruit is a thin-walled follicle long.^[1]

Taxonomy

Grevillea dryandri was first formally described in 1810 by Robert Brown in the Transactions of the Linnean Society of London from specimens collected in Arnhem Land.^{[2] [3]} The specific epithet (dryandri) honours Jonas Carlsson Dryander.^[4]

In 1986, Donald McGillivray described two subspecies of G. dryandri and the names are accepted by the Australian Plant Census:

• Grevillea dryandri subsp. dasycarpa McGill.^[5] differs from the autonym in having leaves with fourteen to thirty pairs of thread-like lobes up to long and wide, pink to bright red flowers with a darker style from March to July, and fruit that is sticky with glandular hairs;^{[6] [7]}
• Grevillea dryandri R.Br. subsp. dryandri^[8] has leaves with 6 to 32 linear lobes long, wide and usually not paired, red, sometimes cream-coloured to white flowers with a red or paler style mostly from January to May, and fruit that is sticky but glabrous;^{[9] [10]}

Distribution and habitat

Subspecies dasycarpa grows in shrubby woodland on sandstone between Mataranka, Daly River and the Gove Peninsula in the northern part of the Northern Territory. Subspecies dryandri grows in open woodland or open shrubland, often in rocky places, from the Kimberley region of Western Australia, to the Northern Territory north of about Tennant Creek and to northern parts of Queensland, mainly as far as Mount Isa and Normanton.

Conservation status

Grevillea dryandri is listed as Least Concern on the IUCN Red List of Threatened Species, due to it being a widely distributed, locally common species with no major threats affecting its population.^[11] Both subspecies of G. dryandri are listed as of "least concern" under the Northern Territory Government Territory Parks and Wildlife Conservation Act.

Notes and References

1. Web site: Grevillea dryandri . Australian Biological Resources Study, Department of Agriculture, Water and the Environment: Canberra . 2 April 2022.
2. Web site: Grevillea dryandri. APNI. 2 April 2022.
3. Brown . Robert . On the Proteaceae of Jussieu. . Transactions of the Linnean Society of London . 1810 . 10 . 1 . 175 . 2 April 2022.
4. Book: Sharr . Francis Aubi . George . Alex . Western Australian Plant Names and Their Meanings . 2019 . Four Gables Press . Kardinya, WA . 9780958034180 . 187 . 3rd.
5. Web site: Grevillea dryandri subsp. dasycarpa. Australian Plant Census. 2 April 2022.
6. Web site: Grevillea dryandri subsp. dasycarpa . Australian Biological Resources Study, Department of Agriculture, Water and the Environment: Canberra . 2 April 2022.
7. Web site: Grevillea dryandri subsp. dasycarpa . Northern Territory Government . 3 April 2022.
8. Web site: Grevillea dryandri subsp. dryandri. Australian Plant Census. 2 April 2022.
9. Web site: Grevillea dryandri subsp. dryandri . Australian Biological Resources Study, Department of Agriculture, Water and the Environment: Canberra . 2 April 2022.
10. Web site: Grevillea dryandri subsp. dryandri . Northern Territory Government . 3 April 2022.
11. Forster, P. . Ford, A. . 2020 . Grevillea dryandri . 2020 . e.T113015954A113309330 . 10.2305/IUCN.UK.2020-2.RLTS.T113015954A113309330.en . 29 December 2023.