Banksia laricina

Banksia laricina, commonly known as the rose banksia,[2] is a species of shrub that is endemic to southwestern Western Australia. It has crowded, linear leaves with a short point on the tip, golden brown flowers with a bright yellow style and prominent egg-shaped follicles.

Rose banksia
Banksia laricina in Moore River National Park
Scientific classification
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Order: Proteales
Family: Proteaceae
Genus: Banksia
Species:
B. laricina
Binomial name
Banksia laricina
Banksia laricina - MHNT

Description

Banksia laricina is a shrub that typically grows to a height of 1.7 m (5 ft 7 in) but that does not form a lignotuber. The leaves are narrow linear and crowded, 5–15 mm (0.20–0.59 in) long and less that 1 mm (0.039 in) wide on a petiole 1–1.5 mm (0.039–0.059 in) long, with a sharp point on the tip. The flowers are arranged in a head 15–25 mm (0.59–0.98 in) long with small involucral bracts at the base. The flowers are pale yellow with a yellow style, the perianth 17–19 mm (0.67–0.75 in) long and the pistil hooked and 27–30 mm (1.1–1.2 in) long. Flowering occurs from April to July and the follicles are prominent, 22–30 mm (0.87–1.18 in) long, 19–27 mm (0.75–1.06 in) high and 14–18 mm (0.55–0.71 in) wide, the old flowers falling from the head.[2][3][4][5]:245

Taxonomy
See also: George's taxonomic arrangement of Banksia
See also: Thiele and Ladiges' taxonomic arrangement of Banksia

Banksia laricina was first formally described in 1964 by West Australian botanist Charles Gardner in the Journal of the Royal Society of Western Australia from specimens he collected in July 1958.[4][6][7] The specific epithet (laricina) is derived from Latin, meaning larch-like.[8]

In 1981, George placed this species in the series Abietinae. Cladistic analysis in a 1996 paper by Kevin Thiele and Pauline Ladiges suggested that the closest relatives of B. laricina appeared to be B. incana and B. tricuspis.[9] In their taxonomic arrangement, Thiele and Ladiges placed B. laricina in series Abietinae, subseries Longistyles.

Thiele and Ladiges' arrangement was not accepted by George, and was largely discarded by him in his 1999 arrangement in Flora of Australia.[5]:175–176

Distribution and habitat

Rose banksia is restricted to a small area near the Moore River and Regans Ford where it grows in low woodland.[4][5]

Conservation status

Banksia laricina is classified as "not threatened" by the Western Australian Government Department of Parks and Wildlife.[2]

Use in horticulture

Rarely cultivated, Banksia laricina will grow on sandy well drained soils in a sunny position. It may require extra water during summer dry periods and take some time (up to 18 months) to establish well. Seeds do not require any treatment, and take 19 to 51 days to germinate.[10]

References
  1. "Banksia laricina". Australian Plant Census. Retrieved 11 May 2020.
  2. "Banksia laricina". FloraBase. Western Australian Government Department of Parks and Wildlife.
  3. George, Alex S. (1996). The Banksia Book (3rd ed.). Kenthurst, New South Wales: Kangaroo Press. pp. 216–217. ISBN 0-86417-818-2.
  4. George, Alex S. (1981). "The genus Banksia L.f. (Proteaceae)". Nuytsia. 3 (3): 440–441. Retrieved 11 May 2020.
  5. George, Alex S. (1999). Flora of Australia (PDF). 17B. Canberra: Australian Biological Resources Study, Canberra. Retrieved 11 May 2020.
  6. Gardner, Charles A. (1964). "Contributiones Florae Australiae Occidentalis, XIII". Journal of the Royal Society of Western Australia. 47 (2): 57. Retrieved 11 May 2020.
  7. "Banksia laricina". APNI. Retrieved 11 May 2020.
  8. Francis Aubie Sharr (2019). Western Australian Plant Names and their Meanings. Kardinya, Western Australia: Four Gables Press. p. 235. ISBN 9780958034180.
  9. Thiele, Kevin; Ladiges, Pauline Y. (1996). "A Cladistic Analysis of Banksia (Proteaceae)". Australian Systematic Botany. 9 (5): 661–733. doi:10.1071/SB9960661.
  10. Sweedman, Luke; Merritt, David; et al. (2006). Australian seeds: a guide to their collection, identification and biology. CSIRO Publishing. p. 203. ISBN 0-643-09298-6.
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