genus
Genus ( plural genera ) is a taxonomic rank used in the biological classification of living and fossil organisms as well as viruses. In the hierarchy of biological classification, genus comes above species and below family. In binomial n ...
of
flowering plant
Flowering plants are plants that bear flowers and fruits, and form the clade Angiospermae (), commonly called angiosperms. They include all forbs (flowering plants without a woody stem), grasses and grass-like plants, a vast majority of ...
in the family
Rutaceae
The Rutaceae is a family, commonly known as the rueRUTACEAE in BoDD – Botanical Der ...
, native to Australia.
Taxonomy
The genus was first described by
John Lindley
John Lindley FRS (5 February 1799 – 1 November 1865) was an English botanist, gardener and orchidologist.
Early years
Born in Catton, near Norwich, England, John Lindley was one of four children of George and Mary Lindley. George Lindley ...
in 1839. Most of the species now placed in the genus were first described in the genus ''
Boronia
''Boronia'' is a genus of about 160 species of flowering plants in the citrus family Rutaceae. Most are endemic to Australia with a few species in New Caledonia, which were previously placed in the genus ''Boronella''. They occur in all Aust ...
'', with which ''Cyanothamnus'' was synonymized. A
molecular phylogenetic
Molecular phylogenetics () is the branch of phylogeny that analyzes genetic, hereditary molecular differences, predominantly in DNA sequences, to gain information on an organism's evolutionary relationships. From these analyses, it is possible to ...
study in 2020 showed that as then
circumscribed
In geometry, the circumscribed circle or circumcircle of a polygon is a circle that passes through all the vertices of the polygon. The center of this circle is called the circumcenter and its radius is called the circumradius.
Not every po ...
''Boronia'' was
polyphyletic
A polyphyletic group is an assemblage of organisms or other evolving elements that is of mixed evolutionary origin. The term is often applied to groups that share similar features known as homoplasies, which are explained as a result of conver ...
, and Lindley's genus was revived. A 2021 classification of the family Rutaceae places ''Cyanothamnus'' in the subfamily
Zanthoxyloideae
''Zanthoxyloideae'' is a subfamily of the family Rutaceae.
Genera
The division of the subfamily into genera varied, . Genera accepted in a 2021 classification of Rutaceae into subfamilies were:
*''Acmadenia'' Bartl. & H.L.Wendl.
*''Acradenia'' Ki ...
.
Species
,
Plants of the World Online
Plants of the World Online (POWO) is an online database published by the Royal Botanic Gardens, Kew. It was launched in March 2017 with the ultimate aim being "to enable users to access information on all the world's known seed-bearing plants ...
accepted the following species:
*''
Cyanothamnus acanthocladus
''Cyanothamnus acanthocladus'' is a plant in the citrus family, Rutaceae and is endemic to a small area in the south-west of Western Australia. It is a low, prickly shrub with small leaves and white, four-petalled flowers.
Description
''Cyanotha ...
'' (Paul G.Wilson) Duretto & Heslewood
*''
Cyanothamnus anemonifolius
''Cyanothamnus anemonifolius'', commonly known as narrow-leaved boronia or sticky boronia, is a flowering plant that is endemic to south-eastern Australia. It is a shrub with mostly pinnate leaves, with white to pale pink four-petalled flowers in ...
'' (A.Cunn.) Duretto & Heslewood
*''
Cyanothamnus baeckeaceus
''Cyanothamnus baeckeaceus'' is a plant in the citrus family, Rutaceae and is endemic to eastern Australia. It is a slender or straggling shrub with simple or trifoliate leaves and pink and white four-petalled flowers. It is endemic to the south- ...
'' (F.Muell.) Duretto & Heslewood
*''
Cyanothamnus bipinnatus
''Cyanothamnus bipinnatus'', commonly known as rock boronia, is a plant in the citrus Family (biology), family, Rutaceae and is Endemism, endemic to Queensland. It is an erect shrub with Glossary of leaf morphology#bipinnate, bipinnate or Glossar ...
'' (Lindl.) Duretto & Heslewood
*''
Cyanothamnus bussellianus
''Cyanothamnus bussellianus'' is a plant in the citrus family, Rutaceae and is endemic to the south-west of Western Australia. It is a slender perennial herb or shrub with well-spaced, simple leaves and pink, blue or white, four-petalled flowers ...
'' (F.Muell.) Duretto & Heslewood
*''
Cyanothamnus coerulescens
''Cyanothamnus coerulescens'', commonly known as blue boronia, is a plant in the citrus family, Rutaceae and is endemic to southern Australia. It is a small, spindly shrub with glandular stems, small, more or less cylindrical leaves and blue to p ...
'' (F.Muell.) Duretto & Heslewood
*''
Cyanothamnus defoliatus
''Cyanothamnus defoliatus'' is a plant in the citrus family, Rutaceae and is endemic to the south-west of Western Australia. It is a straggly shrub with simple, thread-like leaves and white to pink, four-petalled flowers that are pale blue ...
'' (F.Muell.) Duretto & Heslewood
*''
Cyanothamnus fabianoides
''Cyanothamnus fabianoides'' is a plant in the citrus Family (biology), family, Rutaceae and is Endemism, endemic to the Southwest Australia, south-west of Western Australia. It is a compact shrub with many branches, Leaf#Divisions of the lamina ...
'' (Diels) Duretto & Heslewood
*''
Cyanothamnus inconspicuus
''Cyanothamnus inconspicuus'' is a plant in the citrus family, Rutaceae and is endemic to the south-west of Western Australia. It is a shrub with pinnate leaves and small white or creamy green flowers with four petals and eight stamens and ...
'' (Benth.) Duretto & Heslewood
*''
Cyanothamnus inflexus
''Cyanothamnus inflexus'' is a plant in the citrus family Rutaceae and is endemic to tablelands near the New South Wales - Queensland border in Australia. It is an erect, woody shrub with pinnate leaves and up to seven white to pink four-petalled ...
'' (Duretto) Duretto & Heslewood
*''
Cyanothamnus montimulliganensis
''Cyanothamnus montimulliganensis'' is a plant in the citrus family Rutaceae and is endemic to a single mountain in Queensland. It is an erect, woody shrub with pinnate or bipinnate leaves and white, four-petalled flowers usually arranged ...
'' (Duretto) Duretto & Heslewood
*''
Cyanothamnus nanus
''Cyanothamnus nanus'', commonly known as the dwarf boronia or small boronia is a plant in the citrus family Rutaceae and is endemic to eastern Australia. It is a prostrate or low spreading shrub with simple or three-part leaves and white or pale ...
'' (Hook.) Duretto & Heslewood
*''
Cyanothamnus occidentalis
''Cyanothamnus occidentalis'', commonly known as the rock boronia, is a plant in the citrus family Rutaceae and is endemic to eastern Australia. It is an erect, woody shrub with pinnate or bipinnate leaves and groups of up to three white to ...
'' (Duretto) Duretto & Heslewood
*''
Cyanothamnus penicillatus
''Cyanothamnus penicillatus'' is a plant in the citrus family, Rutaceae and is endemic to the south-west of Western Australia. It is a low, spreading shrub with pinnate leaves and white flowers with four petals and eight stamens.
Descriptio ...
'' (Benth.) Duretto & Heslewood
*''
Cyanothamnus polygalifolius
''Cyanothamnus polygalifolius'', commonly known as dwarf boronia, milkwort-leaved boronia or milkwort boronia, is a plant in the citrus family Rutaceae and is endemic to eastern Australia. It is a low-lying shrub with simple leaves and white ...
'' (Sm.) Duretto & Heslewood
*''
Cyanothamnus quadrangulus
''Cyanothamnus quadrangulus'', commonly known as narrow-leaved boronia, is a plant in the citrus family, Rutaceae and is endemic to eastern Australia. It is an erect shrub with four-angled branches, bipinnate leaves and white, sometimes pale pink ...
'' Duretto & Heslewood
*''
Cyanothamnus ramosus
''Cyanothamnus ramosus'' is a species of plant in the citrus family Rutaceae and is endemic to the southwest of Western Australia. It is an erect, mostly glabrous shrub with pinnate leaves with up to seven leaflets, and white, four-petalled flowe ...
'' Lindl.
*''
Cyanothamnus rigens
''Cyanothamnus rigenss'', commonly known as the stiff boronia, is a plant in the citrus family Rutaceae and is endemic to south-eastern New South Wales in Australia. It is a low, compact shrub with mostly trifoliate, glandular leaves and white to ...
'' (Cheel) Duretto & Heslewood
*''
Cyanothamnus subsessilis
''Cyanothamnus subsessilis'' is a species of plant in the citrus family, Rutaceae and is endemic to the south-west of Western Australia. It is a woody, mostly glabrous shrub with simple leaves and flowers with four petals that are white on the ...
'' (Benth.) Duretto & Heslewood
*''
Cyanothamnus tenuis
''Cyanothamnus tenuis'', commonly known as blue boronia, is a species of plant in the citrus family, Rutaceae, and is endemic to the southwest of Western Australia. It is a slender shrub with thread-like, sessile leaves, and flowers with four pe ...
'' Lindl.
*''
Cyanothamnus warangensis
''Cyanothamnus warangensis'' is a species of erect, woody shrub that is endemic to Queensland. It has bipinnate leaves and groups of between five and twenty-five or more white flowers in leaf axils.
Description
''Cyanothamnus warangensis'' is ...
'' (Duretto) Duretto & Heslewood
*''
Cyanothamnus westringioides
''Cyanothamnus westringioides'' is a species of erect shrub that is endemic to a small area in the southwest of Western Australia. It has simple, narrow, sessile leaves and pale pink flowers arranged singly in leaf axils.
Description
''Cyano ...
'' (Paul G.Wilson) Duretto & Heslewood
*''
Cyanothamnus yarrowmerensis
''Cyanothamnus yarrowmerensis'' is a species of erect, woody shrub that is endemic to Queensland. It has pinnate or bipinnate leaves and groups of up to seven flowers with white petals in leaf axils.
Description
''Cyanothamnus yarrowmerensis' ...