Isopogon longifolius

Isopogon longifolius is a small shrub in the family Proteaceae that is endemic to the southwest of Western Australia.

Isopogon longifolius
Scientific classification
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Order: Proteales
Family: Proteaceae
Genus: Isopogon
Species:
I. longifolius
Binomial name
Isopogon longifolius
Occurrence data from Australasian Virtual Herbarium
Synonyms[3][2]

Atylus longifolius (R.Br.) Kuntze

Description

Isopogon longifolius is a small shrub (1-2.5 m high) with smooth branchlets. The smooth, flat leaves are alternate, and 85–220 mm long, and 6–30 mm wide. They are widest above the middle, and have smooth edges. The cream/yellow inflorescence is not sticky. The hairy perianth 13–15 mm long. The pistil is 15–20 mm long and the pollen presenter is spindle-shaped and smooth (2.5-3.5 mm long). The cone has deciduous scales, and is 24–28 mm long. It flowers in January, October, November or December.[4]

Taxonomy

The species was first formally described by botanist Robert Brown in Transactions of the Linnean Society of London in 1810.[2] In 1891, German botanist Otto Kuntze published Revisio generum plantarum, his response to what he perceived as a lack of method in existing nomenclatural practice.[5] Because Isopogon was based on Isopogon anemonifolius,[6] and that species had already been placed by Richard Salisbury in the segregate genus Atylus in 1807,[7] Kuntze revived the latter genus on the grounds of priority, and made the new combination Atylus longifolius for this species.[8] However, Kuntze's revisionary program was not accepted by the majority of botanists.[5] Ultimately, the genus Isopogon was nomenclaturally conserved over Atylus by the International Botanical Congress of 1905.[9]

The accepted description for Isopogon linearis is that of Foreman (1995) in Flora of Australia.[2][10]

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References
  1. Brown, R. (1810) On the natural order of plants called Proteaceae. Transactions of the Linnean Society of London 10(1): 73
  2. "Isopogon longifolius". Australian Plant Name Index (APNI), IBIS database. Centre for Plant Biodiversity Research, Australian Government.
  3. Govaerts, R. et. al. (2018) Plants of the world online: Isopogon longifolius. Board of Trustees of the Royal Botanic Gardens, Kew. Retrieved 13 November 2018.
  4. "Isopogon longifolius". FloraBase. Western Australian Government Department of Parks and Wildlife.
  5. Erickson, Robert F. "Kuntze, Otto (1843–1907)". Botanicus.org. Retrieved 28 November 2015.
  6. Knight, Joseph (1809). On the Cultivation of the Plants Belonging to the Natural Order of Proteeae. London, United Kingdom: W. Savage. p. 94.
  7. Hooker, William (1805). The Paradisus Londinensis. 1. London, United Kingdom: D. N. Shury.
  8. Kuntze, Otto (1891). Revisio generum plantarum:vascularium omnium atque cellularium multarum secundum leges nomenclaturae internationales cum enumeratione plantarum exoticarum in itinere mundi collectarum. Leipzig, Germany: A. Felix. p. 577.
  9. "Congrès international de Botanique de Vienne". Bulletin de la Société botanique de France. 52: LIII. 1905.
  10. Foreman, D.B. in McCarthy, P.M. (ed.) (1995) Isopogon. Flora of Australia 16: 203, Fig. 101, Map 194. See Flora of Australia online
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