Banksia drummondii

Banksia drummondii, commonly known as Drummond's dryandra,[2] is a species of shrub that is endemic to Western Australia. It has pinnatifid to pinnatisect leaves, heads of up to one hundred cream-coloured, red and yellow flowers and glabrous fruit.

Drummond's dryandra
Banksia drummondii subsp. drummondii
Scientific classification
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Order: Proteales
Family: Proteaceae
Genus: Banksia
Subgenus: Banksia subg. Banksia
Series: Banksia ser. Dryandra
Species:
B. drummondii
Binomial name
Banksia drummondii
Synonyms[1]

Dryandra drummondii Meisn.

Description

Banksia drummondii is a shrub that typically grows to a height of 1.5 m (4 ft 11 in) but does not form a lignotuber. The stems are erect and the leaves pinnatifid to pinnatisect, 150–900 mm (5.9–35.4 in) long and 2.5–7.5 mm (0.098–0.295 in) wide on a petiole 50–150 mm (2.0–5.9 in) long. The leaves are covered with rust-coloured, woolly hairs at first and have between 10 and 22 triangular to oblong lobes on each side. The upper side is bluish green and the veins on the lower side are prominent. The flowers are arranged in groups of 60 to 100 on the ends of branches, the heads with rusty-hairy involucral bracts up to 15 mm (0.59 in) long at the base. The flowers have a pale yellow perianth 37–56 mm (1.5–2.2 in) long and a thick cream-coloured or red pistil 43–69 mm (1.7–2.7 in) long. Flowering occurs from May to June or from November to January and the fruit is a glabrous, egg-shaped to elliptical follicle 16–20 mm (0.63–0.79 in) long.[2][3][4]

Taxonomy and naming

This species was first formally described in 1848 by Carl Meissner who gave it the name Dryandra drummondii and published the description in Lehmann's Plantae Preissianae from specimens collected near the Swan River Colony by James Drummond.[5][6] The specific epithet (drummondii) honours the collector of the type specimens.[7]

In 1996, Alex George described three subspecies:[4]

  • Dryandra drummondii subsp. drummondii with a yellow pistil 43–60 mm (1.7–2.4 in) long and flowering in summer;
  • Dryandra drummondii subsp. macrorufa with a red pistil 60–69 mm (2.4–2.7 in) long;
  • Dryandra drummondii subsp. hiemalis with a yellow pistil 43–60 mm (1.7–2.4 in) long and flowering in winter.

In 2007, Austin Mast and Kevin Thiele transferred all Dryandra species to Banksia and Dryandra drummondii was renamed Banksia drummondii.[8][9]

The changed names of the subspecies are as follows and are accepted at the Australian Plant Census:

  • Banksia drummondii subsp. drummondii;[10][11]
  • Banksia drummondii subsp. hiemalis;[12][13]
  • Banksia drummondii subsp. macrorufa.[14][15]

Distribution and habitat

Subspecies drummondii occurs in the Stirling Range, extending to South Stirling and Kendenup and Ongerup, growing in mallee-kwongan. Subspecies hiemalis grows in forest and woodland between New Norcia and Wickepin. Subspecies macrorufa is only known from near Nyabing where it grows in low kwongan.

Ecology

An assessment of the potential impact of climate change on this species found that its range is likely to contract by between 50% and 80% by 2080, depending on the severity of the change.[16]

Conservation status

Subspecies macrorufa is classified as "Priority Two" by the Western Australian Government Department of Parks and Wildlife[11] meaning that it is poorly known and from only one or a few locations,[17] but the other two subspecies are classified as "not threatened".[11][13]

References
  1. "Banksia drummondii". Australian Plant Census. Retrieved 22 April 2020.
  2. "Banksia drummondii". FloraBase. Western Australian Government Department of Parks and Wildlife.
  3. George, Alex S. (1999). Flora of Australia (PDF). 17B. Canberra: Australian Biological Resources Study, Canberra. pp. 307–309. Retrieved 22 April 2020.
  4. George, Alex S. (1996). "New taxa and a new infrageneric classification in Dryandra R.Br". Nuytsia. 10 (3): 367–368.
  5. "Dryandra drummondii". APNI. Retrieved 22 April 2020.
  6. Meissner, Carl; Lehmann, Johann G.C. (ed.) (1848). Plantae Preissianae. Hamburg: Sumptibus Meissneri. pp. 267–268. Retrieved 22 April 2020.CS1 maint: extra text: authors list (link)
  7. Francis Aubie Sharr (2019). Western Australian Plant Names and their Meanings. Kardinya, Western Australia: Four Gables Press. p. 187. ISBN 9780958034180.
  8. "Banksia drummondii". APNI. Retrieved 22 April 2020.
  9. Mast, Austin R.; Thiele, Kevin (2013). "The transfer of Dryandra R.Br. to Banksia L.f. (Proteaceae)". Australian Systematic Botany. 20 (1): 63–71. doi:10.1071/SB06016.
  10. "Banksia drummondii subsp. drummondii". Australian Plant Census. Retrieved 22 April 2020.
  11. "Banksia drummondii". FloraBase. Western Australian Government Department of Parks and Wildlife.
  12. "Banksia drummondii subsp. hiemalis". Australian Plant Census. Retrieved 22 April 2020.
  13. "Banksia drummondii". FloraBase. Western Australian Government Department of Parks and Wildlife.
  14. "Banksia drummondii subsp. macrorufa". Australian Plant Census. Retrieved 22 April 2020.
  15. "Banksia drummondii". FloraBase. Western Australian Government Department of Parks and Wildlife.
  16. Fitzpatrick, Matthew C.; Gove, Aaron D.; Sanders, Nathan J.; Dunn, Robert R. (2008). "Climate change, plant migration, and range collapse in a global biodiversity hotspot: the Banksia (Proteaceae) of Western Australia". Global Change Biology. 14 (6): 1–16. doi:10.1111/j.1365-2486.2008.01559.x.
  17. "Conservation codes for Western Australian Flora and Fauna" (PDF). Government of Western Australia Department of Parks and Wildlife. Retrieved 24 December 2015.
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