Callistemon (Genus)
Bottlebrush (Callistemon ) is a genus with 34 species of shrubs in the family Myrtaceae. The majority of Callistemon species are endemic to Australia; four species are also found in New Caledonia. They are commonly referred to as bottlebrushes because of their cylindrical, brush like flowers resembling a traditional bottle brush. They are found in the more temperate regions of Australia, mostly along the east coast and south-west, and typically favour moist conditions so when planted in gardens thrive on regular watering. However, at least some of the species are drought-resistant.
Bottlebrush seed capsules
Callistemons can be propagated either by cuttings (some species more easily than others), or from the rounded seeds. Flowering is normally in Spring and early Summer (October-December), but conditions may cause flowering at other times of the year. The obvious parts of the flower masses are stamens, with the pollen at the tip of the filament; the petals are inconspicuous (see picture). Flower heads vary in color with species; most are red, but some are yellow, green, orange or white. Each flower head produces a profusion of triple-celled seed capsules around a stem (see picture) which remain on the plant with the seeds enclosed until stimulated to open when the plant dies or fire causes the release of the seeds. (A few species release the seeds annually.)
They are relatively slow growing though in time the larger species can grow up to 15 metres. Some are ground-hugging, and grow to only 0.5 metre. The leaves are linear to lanceolate and are not shed in the winter. The spiked ends can cause skin scratches when brushed past.
They have beengrown in Europe since a specimen of Callistemon citrinus was introduced to Kew Gardens in London by Joseph Banks in 1789.
In Australia, Callistemon species are sometimes used as food plants by the larvae of hepialid moths of the genus Aenetus including A. ligniveren . These burrow horizontally into the trunk then vertically down.
Callistemon was recently placed into the genus Melaleuca .
Species
Callistemon citrinus
Callistemon pallidus
Callistemon viminalis
Callistemon viminalis
Callistemon acuminatus Cheel
Callistemon brachyandrus Lindl.
Callistemon chisholmii Cheel
Callistemon citrinus (Curtis) Skeels - Crimson Bottlebrush
Callistemon coccineus F.Muell.
Callistemon comboynensis Cheel
Callistemon flavovirens (Cheel) Cheel
Callistemon formosus S.T.Blake
Callistemon forresterae Molyneux
Callistemon genofluvialis Molyneux
Callistemon glaucus (Bonpl.) Sweet
Callistemon kenmorrisonii Molyneux
Callistemon linearifolius (Link) DC.
Callistemon linearis Sweet
Callistemon montanus C.T.White ex S.T.Blake
Callistemon nervosus Lindl.
Callistemon nyallingensis Molyneux
Callistemon pachyphyllus Cheel
Callistemon pallidus (Bonpl.) DC.
Callistemon pauciflorus R.D.Spencer & Lumley
Callistemon pearsonii R.D.Spencer & Lumley
Callistemon phoeniceus Lindl.
Callistemon pinifolius (Wendl.) Sweet
Callistemon pityoides F.Muell.
Callistemon polandii F.M.Bailey
Callistemon pungens Lumley & R.D.Spencer
Callistemon recurvus R.D.Spencer & Lumley
Callistemon rigidus R.Br.
Callistemon rugulosus (Schltdl. ex Link) DC. - Scarlet Bottlebrush
Callistemon salignus (Sm.) Sweet
Callistemon shiressii Blakely
Callistemon sieberi DC.
Callistemon subulatus Cheel
Callistemon viminalis (Sol. ex Gaertn.) G.Don - Weeping Bottlebrush
Callistemon viridiflorus (Sims) Sweet
Photos
Callistemon citrinus Callistemon citrinus Photographer: David Stang Date Taken: March 25, 2006 Location Taken: Rawlings Conservatory & Botanic Gardens, Baltimore MD USA Copyright: © 2006 the BayScience Foundation ZipcodeZoo Photo ID: 124917
Callistemon citrinus Callistemon citrinus Photographer: David Stang Date Taken: March 25, 2006 Location Taken: Rawlings Conservatory & Botanic Gardens, Baltimore MD USA Copyright: © 2006 the BayScience Foundation ZipcodeZoo Photo ID: 124893
Callistemon citrinus Callistemon viminalis Photographer: Gerald D. Carr Location Taken: Hawaii Copyright: © Gerald D. Carr ZipcodeZoo Photo ID: 119027
Callistemon citrinus Callistemon citrinus Photographer: TopTropicals.com Copyright: © TopTropicals.com Permissions for Use: see here . ZipcodeZoo Photo ID: 97972
Callistemon citrinus Callistemon citrinus Photographer: TopTropicals.com Copyright: © TopTropicals.com Permissions for Use: see here . ZipcodeZoo Photo ID: 97964
Callistemon citrinus Callistemon sieberi Whole image. Photographer: Charles Sturt University Virtual Herbarium Location Taken: Bogong High Plains National Park, 500m south along Langford west aqueduct from SEC hut, on west facing slope. Lat.36 53 S Long. 147 19 E., Mount Beauty, VIC, Australia. ZipcodeZoo Photo ID: 140145
Callistemon citrinus Callistemon rugulosus Flower(s) Photographer: Dennis Haugen Location Taken: Australia Copyright: © Dennis Haugen. Permissions for Use: see www.ForestryImages.org . ZipcodeZoo Photo ID: 170823
Callistemon citrinus Callistemon citrinus Photographer: TopTropicals.com Copyright: © TopTropicals.com Permissions for Use: see here . ZipcodeZoo Photo ID: 97973
Callistemon citrinus Callistemon citrinus Photographer: Gerald D. Carr Copyright: © Gerald D. Carr ZipcodeZoo Photo ID: 117635
Callistemon citrinus Callistemon citrinus Photographer: TopTropicals.com Copyright: © TopTropicals.com Permissions for Use: see here . ZipcodeZoo Photo ID: 97968
Callistemon citrinus Callistemon rigidus Flower(s) Photographer: Dennis Haugen Location Taken: Australia Copyright: © Dennis Haugen. Permissions for Use: see www.ForestryImages.org . ZipcodeZoo Photo ID: 170820
Callistemon citrinus Callistemon citrinus Photographer: TopTropicals.com Copyright: © TopTropicals.com Permissions for Use: see here . ZipcodeZoo Photo ID: 97974
Callistemon citrinus Callistemon citrinus Photographer: TopTropicals.com Copyright: © TopTropicals.com Permissions for Use: see here . ZipcodeZoo Photo ID: 97969
Callistemon citrinus Callistemon viminalis Photographer: David Stang Date Taken: May 15, 2007 Location Taken: Longwood Gardens , Kennett Square, Pennsylvania. Copyright: © 2007 David Stang ZipcodeZoo Photo ID: 254478
Callistemon citrinus Callistemon citrinus Photographer: David Stang Date Taken: March 25, 2006 Location Taken: Rawlings Conservatory & Botanic Gardens, Baltimore MD USA Copyright: © 2006 the BayScience Foundation ZipcodeZoo Photo ID: 124928
Callistemon citrinus Callistemon sieberi Leaf. Photographer: Charles Sturt University Virtual Herbarium Location Taken: Bogong High Plains National Park, 500m south along Langford west aqueduct from SEC hut, on west facing slope. Lat.36 53 S Long. 147 19 E., Mount Beauty, VIC, Australia. ZipcodeZoo Photo ID: 140144
Callistemon citrinus Callistemon citrinus Photographer: TopTropicals.com Copyright: © TopTropicals.com Permissions for Use: see here . ZipcodeZoo Photo ID: 97970
Callistemon citrinus Callistemon sieberi Flower. Photographer: Charles Sturt University Virtual Herbarium Location Taken: Bogong High Plains National Park, 500m south along Langford west aqueduct from SEC hut, on west facing slope. Lat.36 53 S Long. 147 19 E., Mount Beauty, VIC, Australia. ZipcodeZoo Photo ID: 140143
Callistemon citrinus Callistemon rugulosus Twig(s)/Shoot(s) Photographer: Dennis Haugen Location Taken: Australia Copyright: © Dennis Haugen. Permissions for Use: see www.ForestryImages.org . ZipcodeZoo Photo ID: 170867
Callistemon citrinus Callistemon citrinus Photographer: David Stang Date Taken: March 10, 2008 Location Taken: Longwood Gardens , Kennett Square, Pennsylvania. Copyright: © 2008 David Stang ZipcodeZoo Photo ID: 301394
Callistemon citrinus Callistemon citrinus Photographer: David Stang Date Taken: March 10, 2008 Location Taken: Rawlings Conservatory & Botanic Gardens, Baltimore MD USA Copyright: © 2008 David Stang ZipcodeZoo Photo ID: 302035
Callistemon citrinus Callistemon viminalis Photographer: David Stang Date Taken: March 10, 2008 Location Taken: Longwood Gardens , Kennett Square, Pennsylvania. Copyright: © 2008 David Stang ZipcodeZoo Photo ID: 301044
Callistemon citrinus Callistemon viminalis Photographer: David Stang Date Taken: March 10, 2008 Location Taken: Longwood Gardens , Kennett Square, Pennsylvania. Copyright: © 2008 David Stang ZipcodeZoo Photo ID: 301042
Callistemon citrinus Callistemon citrinus Photographer: David Stang Date Taken: March 10, 2008 Location Taken: Rawlings Conservatory & Botanic Gardens, Baltimore MD USA Copyright: © 2008 David Stang ZipcodeZoo Photo ID: 302037
Callistemon citrinus Callistemon citrinus Photographer: David Stang Date Taken: March 10, 2008 Location Taken: Longwood Gardens , Kennett Square, Pennsylvania. Copyright: © 2008 David Stang ZipcodeZoo Photo ID: 301396
Callistemon citrinus Callistemon viminalis Photographer: David Stang Date Taken: March 10, 2008 Location Taken: Longwood Gardens , Kennett Square, Pennsylvania. Copyright: © 2008 David Stang ZipcodeZoo Photo ID: 301043
Callistemon citrinus Callistemon citrinus Photographer: David Stang Date Taken: March 10, 2008 Location Taken: Rawlings Conservatory & Botanic Gardens, Baltimore MD USA Copyright: © 2008 David Stang ZipcodeZoo Photo ID: 302036
Callistemon citrinus Callistemon citrinus Photographer: David Stang Date Taken: March 10, 2008 Location Taken: Longwood Gardens , Kennett Square, Pennsylvania. Copyright: © 2008 David Stang ZipcodeZoo Photo ID: 301395
Callistemon citrinus Callistemon citrinus Photographer: David Stang Date Taken: March 10, 2008 Location Taken: Rawlings Conservatory & Botanic Gardens, Baltimore MD USA Copyright: © 2008 David Stang ZipcodeZoo Photo ID: 302034
Callistemon citrinus Callistemon citrinus Photographer: David Stang Date Taken: March 10, 2008 Location Taken: Rawlings Conservatory & Botanic Gardens, Baltimore MD USA Copyright: © 2008 David Stang ZipcodeZoo Photo ID: 302033
Map
Taxonomy
Domain: Eukaryota
Whittaker & Margulis,1978 - eukaryotes
Kingdom: Plantae
Haeckel, 1866 - Plants
Subkingdom: Viridaeplantae
Cavalier-Smith, 1981 - Green Plants
Phylum: Tracheophyta
Sinnott, 1935 ex Cavalier-Smith, 1998 - Vascular Plants
The Genus Callistemon is further organized into finer groupings including:
References
Callistemon . Australian Plant Name Index (APNI), IBIS database . Centre for Plant Biodiversity Research, Australian Government, Canberra. Retrieved on 2007-11-19.
Sources
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Last Revised: May 01, 2008