Grevillea thelemanniana
In Geelong Botanic Gardens
Scientific classification Edit this classification
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Order: Proteales
Family: Proteaceae
Genus: Grevillea
Species:
G. thelemanniana
Binomial name
Grevillea thelemanniana
Synonyms[1]
  • Grevillea thelemaniana Lindl. orth. var.
  • Grevillea thelemanniana Hügel ex Lindl. nom. illeg.
  • Grevillea thelemanniana Hügel ex Endl. subsp. thelemanniana
  • Hakea thelemanniana (Hügel ex Endl.) Christenh. & Byng

Grevillea thelemanniana, commonly known as spider net grevillea,[2] is species of flowering plant in the family Proteaceae and is endemic to Perth, Western Australia. It is a spreading shrub with linear and pinnatipartite to pinnatisect leaves with linear to narrowly elliptic lobes, and clusters of 6 to 14 pinkish-red and cream-coloured flowers with a red, green-tipped style.

Description

Grevillea thelemanniana is a spreading shrub that typically grows to 0.5–1 m (1 ft 8 in – 3 ft 3 in) high and 1–2.5 m (3 ft 3 in – 8 ft 2 in) or more wide. Its leaves are linear and pinnatipartite to pinnatisect, 25–45 mm (0.98–1.77 in) long with 2 to 5 lobes, the end lobes of the divided leaves 2–8 mm (0.079–0.315 in) long, the linear leaves and the end lobes of the divided leaves are 1.0–1.5 mm (0.039–0.059 in) wide. The upper surface of the leaves is more or less glabrous, the edges of the leaves are down-curved or rolled under, and the lower surface is silky-hairy. The flowers are borne in cylindrical clusters of 6 to 14 on one side of a raceme 5–15 mm (0.20–0.59 in) long. The flowers are pinkish red and cream-coloured, the style red with a green tip, and the pistil is 24–28 mm (0.94–1.10 in) long. Flowering occurs from July to October and the fruit is an oblong to elliptic follicle 12–13 mm (0.47–0.51 in) long.[2][3][4]

Taxonomy

Grevillea thelemanniana was first formally described in 1839 by Stephan Endlicher in Novarum Stirpium Decades, from an unpublished description by Charles von Hügel.[5][6] The specific epithet (thelemanniana) honours C. Thelemann, a Viennese gardener.[4][7]

Distribution and habitat

Spider net grevillea grows in winter-wet swampy heath in the Cannington, Kenwick and Wattle Grove suburbs of Perth, Western Australia.[2][3]

Conservation status

Grevillea thelemanniana is listed as "critically endangered" under the Australian Government Environment Protection and Biodiversity Conservation Act 1999 and as "Threatened" by the Western Australian Government Department of Biodiversity, Conservation and Attractions,[2] meaning that it is in danger of extinction.[8]

References

  1. 1 2 "Grevillea thelemanniana". Australian Plant Census. Retrieved 12 March 2023.
  2. 1 2 3 4 "Grevillea thelemanniana". FloraBase. Western Australian Government Department of Biodiversity, Conservation and Attractions.
  3. 1 2 "Grevillea thelemanniana". Australian Biological Resources Study, Department of Agriculture, Water and the Environment: Canberra. Retrieved 21 March 2023.
  4. 1 2 Wrigley, John W.; Fagg, Murray A. (1991). Banksias, waratahs & grevilleas : and all other plants in the Australian Proteaceae family. North Ryde, NSW, Australia: Angus & Robertson. p. 340–342. ISBN 0207172773.
  5. ↑ "Grevillea thelemanniana". APNI. Retrieved 21 March 2023.
  6. ↑ Endlicher, Stephan (1839). Endlicher, Stephan; Fenzl, Edouard (eds.). Novarum Stirpium Decades. p. 6. Retrieved 21 March 2023.
  7. ↑ Sharr, Francis Aubi; George, Alex (2019). Western Australian Plant Names and Their Meanings (3rd ed.). Kardinya, WA: Four Gables Press. p. 323. ISBN 9780958034180.
  8. ↑ "Conservation codes for Western Australian Flora and Fauna" (PDF). Government of Western Australia Department of Parks and Wildlife. Retrieved 22 March 2023.
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