Grevillea plurijuga F. Müll.

Grevillea plurijuga is a species of flowering plant in the family Proteaceae and is endemic to southern Western Australia. It is a prostrate to low-lying or dense mounded to erect shrub with divided leaves with linear lobes and loose clusters of hairy, red or pink flowers.

Description

Grevillea plurijuga is a prostrate to low-lying or dense mounded to erect shrub that typically grows to a height of 0.6–3 m (2 ft 0 in – 9 ft 10 in) and up to 3.5 m (11 ft) wide. Its leaves are 20–130 mm (0.79–5.12 in) long and mostly divided with 8 to 24 linear lobes 20–100 mm (0.79–3.94 in) long and 0.7–1.5 mm (0.028–0.059 in) wide, the edges rolled under, enclosing the lower surface apart from the mid-vein. The flowers are arranged in loose, more or less cylindrical clusters of 8 to 40 on a hairy rachis 20–100 mm (0.79–3.94 in) long. Flowering time and colour varies with subspecies and the fruit is a glabrous, prominently ridged follicle 12–17 mm (0.47–0.67 in) long.^[2][3]

Taxonomy

Grevillea plurijuga was first formally described in 1864 by Ferdinand von Mueller in Fragmenta Phytographiae Australiae from specimens collected by George Maxwell.^[4][5] The specific epithet (plurijuga) means "more yokes", referring to the many leaf lobes.^[6]

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

• Grevillea plurijuga F.Muell subsp. plurijuga^[7] is a prostrate to low-lying, dense, mounded shrub 0.3–2 m (1 ft 0 in – 6 ft 7 in) high with pale grey to pinkish-red and cream-coloured flowers from September to January. The flowers are mostly borne on long, trailing peduncles below the base of the foliage.^[8][9]
• Grevillea plurijuga subsp. superba (Olde & Marriott) Makinson^[10] (originally described in 1993 by as Grevillea superba in the journal Nuytsia by Peter Olde and Neil Marriott)^[11][12] is a dense, robust shrub 2–4 m (6 ft 7 in – 13 ft 1 in) high usually with pale grey and cream-coloured or pale yellow flowers from October to December. The flowers are mostly borne on erect peduncles held above the foliage.^[13][14]

Distribution and habitat

Subspecies plurijuga grows in a range of habitats including heath, woodland and mallee between Norseman, Peak Charles, Esperance, and Cundeelee with and outlier near Southern Cross, in the Coolgardie, Esperance Plains and Mallee bioregions.^[8][9] Subspecies superba grows in shrubland between Grasspatch, Scaddan, the Wittenoom Hills and Mount Ney north of Esperance in the Coolgardie, Esperance Plains and Mallee bioregions of southern Western Australia.^[13][14]

Conservation status

Both subspecies of G. plurijuga are listed as "not threatened" by the Western Australian Government Department of Biodiversity, Conservation and Attractions.^[8][13]

References

Grevillea plurijuga là một loài thực vật có hoa trong họ Quắn hoa. Loài này được F.Muell. miêu tả khoa học đầu tiên năm 1864.^[1]

Chú thích

Liên kết ngoài

• Phương tiện liên quan tới Grevillea plurijuga tại Wikimedia Commons
• Dữ liệu liên quan tới Grevillea plurijuga tại Wikispecies
• Vườn thực vật hoàng gia Kew; Đại học Harvard; Australian Plant Name Index (biên tập). “Grevillea plurijuga”. International Plant Names Index. Truy cập ngày 25 tháng 6 năm 2013.

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