Cyanothamnus

Cyanothamnus is a genus of flowering plant in the family Rutaceae, native to Australia.[2] Plants in the genus Cyanothamnus are erect or spreading shrubs usually with pinnate leaves (simple leaves in C. anemonifolius and C. nanus) arranged in opposite pairs, the leaves or leaflets flat. The flowers are arranged singly or in cymes with minute bracts. The petals are usually pink or white, sometimes blue or yellowish-green.[3]

Cyanothamnus
Cyanothamnus anemonifolius
Scientific classification Edit this classification
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Clade: Rosids
Order: Sapindales
Family: Rutaceae
Subfamily: Zanthoxyloideae
Genus: Cyanothamnus
Lindl.[1]
Species

See text.

Taxonomy

The genus was first described in 1839 by John Lindley in A Sketch of the Vegetation of the Swan River Colony.[1][4] Most of the species now placed in the genus were first described in the genus Boronia, with which Cyanothamnus was synonymized. A molecular phylogenetic study in 2020 showed that as then circumscribed Boronia was polyphyletic, and Lindley's genus was revived.[5] A 2021 classification of the family Rutaceae places Cyanothamnus in the subfamily Zanthoxyloideae.[6]

Species

As of September 2021, Plants of the World Online accepted the following species:[2]

References
  1. "Cyanothamnus Lindl.", The International Plant Names Index, retrieved 2021-09-20
  2. "Cyanothamnus Lindl.", Plants of the World Online, Royal Botanic Gardens, Kew, retrieved 2021-09-20
  3. Duretto, Marco F.; Wilson, Peter G.; Ladiges, Pauline Y. (2013). Wilson, Annette (ed.). Flora of Australia. Vol. 26. Canberra: Australian Biological Resources Study. p. 194. ISBN 978064310955 1.
  4. Lindley, John (1839). A Sketch of the Vegetation of the Swan River Colony. London: James Ridgway. p. xviii. Retrieved 2023-08-13.
  5. Duretto, Marco F.; Heslewood, Margaret M. & Bayly, Michael J. (2020), "Boronia (Rutaceae) is polyphyletic: Reinstating Cyanothamnus and the problems associated with inappropriately defined outgroups", Taxon, 69 (3): 481–499, doi:10.1002/tax.12242
  6. Appelhans, Marc S.; Bayly, Michael J.; Heslewood, Margaret M.; Groppo, Milton; Verboom, G. Anthony; Forster, Paul I.; Kallunki, Jacquelyn A. & Duretto, Marco F. (2021), "A new subfamily classification of the Citrus family (Rutaceae) based on six nuclear and plastid markers", Taxon, doi:10.1002/tax.12543, hdl:11343/288824


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