Corymbia eximia, commonly known as the yellow bloodwood, is a bloodwood native to New South Wales. It occurs around the Sydney Basin often in high rainfall areas on shallow sandstone soils on plateaux or escarpments, in fire prone areas. Growing as a gnarled tree to 20 m (66 ft), it is recognisable by its distinctive yellow-brown tessellated bark. The greyish green leaves are thick and veiny, and lanceolate spear- or sickle-shaped. The cream flowerheads grow in panicles in groups of seven and appear in spring. Known for many years as Eucalyptus eximia, the yellow bloodwood was transferred into the new genus Corymbia in 1995 when it was erected by Ken Hill and Lawrie Johnson. It is still seen under the earlier name in some works.
The yellow bloodwood grows as an attractive gnarled tree, up to 20 metres (70 feet) tall.[2] It can have a multistemmed stunted habit when growing on an exposed site.[3] The distinctive bark is a yellowish fawn colour, and flaky, rough in consistency with a somewhat tessellated pattern. Measuring up to 20 cm (8 in) long and 2.5 cm (1 in) wide, the adult leaves are greyish green, thick and veiny, and lanceolate (spear-shaped) or falcate (sickle-shaped), and have a prominent raised yellow midrib and taper to the end. They are arranged alternately along the stems Leaves are the same colour above as below the leaf.[4] The cream flowers begin as buds in February and are open from August to October,[3] and are sometimes used in floral arrangements. Groups of seven flowers are arranged in panicles, the buds on short stalks (pedicellate) initially measuring 1.3 to 1.5 cm (0.51 to 0.59 in) long by 0.6 cm (0.24 in) wide and pear- or club-shaped.[4] The gumnuts are the typical urn shape of most bloodwoods. The seeds are without wings,[2][5] and are mature by December and remain on the tree for up to 16 months.[3][6]
Seedlings have opposite leaves for the first three six pairs, and these are elliptic to lanceolate in shape. These are followed by oblong to lanceolate juvenile leaves which become more alternate along the stems. A light blue-green in colour, these measure 7.5 to 12.5 cm (3.0 to 4.9 in) long by 2.5–3.2 cm (0.98–1.26 in) wide.[4]
Taxonomy and naming
First collected by Europeans near the Grose River by Robert Brown and Ferdinand Bauer between September and October 1803,[7] the yellow bloodwood was described as Eucalyptus eximia by German botanist Johannes Conrad Schauer in 1843 in Wilhelm Gerhard Walpers' book Repertorium Botanices Systematicae.[8][9] The species name is derived from the Latin adjective eximius "exceptional" or "uncommon", and might related to the distinctive and unusual appearance of either the bark or flowers of the tree.[4] In 1995, the genus Eucalyptus was split into three genera by Ken Hill and Lawrie Johnson of the Royal Botanic Gardens, Sydney, with E. eximia transferred into Corymbia.[10] Hill and Johnson classified it in the sectionOchraria along with eleven other species, this group known as "yellow bloodwoods".[7] A combined analysis of nuclear rDNA (ETS + ITS) and morphological characters published in 2009 found this group to be monophyletic, and it was renamed section Naviculares within the subgenus Blakella (the name originally coined by Maiden in 1929 as Eucalyptus series Naviculares), with C. eximia as the type species.[11]
The common name is derived from the gum veins in the wood.[2]
Distribution and habitat
The yellow bloodwood is found in central New South Wales from Howes Valley in the north to Tolwong in the south.[12] Around the Sydney Basin, it is common on sandstone plateaux and escarpments in the vicinity of the Nepean and Hawkesbury Rivers, and lower Blue Mountains,[2] particularly on western aspects of slopes.[3] It is seen up to altitudes of 500 metres, with annual rainfall of 730–1800 mm.[4] It grows in dry sclerophyll forest on sandstone soils, associated with such species as red bloodwood (Corymbia gummifera), dwarf apple (Angophora hispida), smooth-barked apple (Angophora costata), narrow-leaved stringybark (Eucalyptus sparsifolia), white stringybark (E. globoidea), sydney peppermint (E. piperita), grey gum (E. punctata), scribbly gums (E. haemastoma and E. racemosa) and black sheoak (Allocasuarina littoralis).[4][3]
Ecology
The yellow bloodwood regenerates by regrowing from epicormic buds after bushfire. Trees live for over a hundred years. The grey-headed flying fox (Pteropus poliocephalus) eats the flowers.[3] It is highly sensitive to the white leaf and shoot blight (Sporothrix pitereka)[13]
Uses
The relatively small size and rarity of Corymbia eximia meant it was rarely used as timber.[4] It has been used as a street tree in Australian cities,[14] and its small size and attractive bark make it a good tree for backyards,[15] although it is too large for small gardens. It flowers prolifically, but the flowering period is short.[16]C. eximia was listed in the catalogue of Treseder's nursery of Truro in Cornwall in 1905.[17]
A smaller form, "nana" has been propagated and used as a garden or street tree.
References
^ ab"Corymbia eximia". Australian Plant Census. Retrieved 10 February 2020.
^ abcdFairley, Alan; Moore, Philip (2000). Native Plants of the Sydney District:An Identification Guide (2nd ed.). Kenthurst, NSW: Kangaroo Press. p. 196. ISBN0-7318-1031-7.
^ abcdefBenson, Doug; McDougall, Lyn (1998). "Ecology of Sydney plant species:Part 6 Dicotyledon family Myrtaceae". Cunninghamia. 5 (4): 809–987 [849].
^ abcdefgBoland, Douglas J.; Brooker, M. I. H.; Chippendale, G. M.; McDonald, Maurice William (2006). Forest trees of Australia. Collingwood, Victoria: CSIRO Publishing. p. 254. ISBN0-643-06969-0.
^A Field Guide to Eucalypts - Brooker & Kleinig volume 1, ISBN0-909605-62-9 page 49
^"Corymbia eximia". Centre for Australian National Biodiveristy Research. Retrieved 6 June 2020.
^ abHill, Ken D.; Johnson, L.A.S. (1995). "Systematic studies in the Eucalypts 7. A revision of the bloodwoods, genus Corymbia (Myrtaceae)". Telopea. 6 (2–3): 185–504. doi:10.7751/telopea19953017.
^"Eucalyptus eximia". APNI. Retrieved 10 February 2020.
^Schauer, Johannes Conrad; Walpers, Wilhelm Gerhard (1843). Repertorium botanices systematicae. New York: Sumtibus Friderici Hofmeister. pp. 925–926. Retrieved 10 February 2020.
^"Corymbia eximia". APNI. Retrieved 10 February 2020.
^Parra-O., C.; Bayly, M. J.; Drinnan, A.; Udovicic, F.; Ladiges, P. (2009). "Phylogeny, major clades and infrageneric classification of Corymbia (Myrtaceae), based on nuclear ribosomal DNA and morphology". Australian Systematic Botany. 22 (5): 384–399. doi:10.1071/SB09028.
^Keane, P. J.; Kile, G. A.; Podger, F. D. (2000). Diseases and pathogens of eucalypts. Collingwood, Victoria: CSIRO Publishing. p. 206. ISBN0-643-06523-7.
^. Nunawading, Victoria: Whitehorse City Council. 2011. Archived from the original on 24 April 2011. Retrieved 3 September 2011.
^"Corymbia eximia Yellow Bloodwood" (PDF). Bondi Junction, New South Wales: Waverley Council. 2011. Retrieved 3 September 2011.
^Elliot, Rodger W.; Jones, David L.; Blake, Trevor (1992). Encyclopaedia of Australian Plants Suitable for Cultivation: Vol. 4: Eu-Go. Port Melbourne: Lothian Press. pp. 90–91. ISBN0-85091-213-X.
^Treseder, Suzanne (2004). A passion for plants: the Treseders of Truro. Alison Hodge Publishers. p. 112. ISBN0-906720-38-9.
January 26, 2023
corymbia, eximia, commonly, known, yellow, bloodwood, bloodwood, native, south, wales, occurs, around, sydney, basin, often, high, rainfall, areas, shallow, sandstone, soils, plateaux, escarpments, fire, prone, areas, growing, gnarled, tree, recognisable, dist. Corymbia eximia commonly known as the yellow bloodwood is a bloodwood native to New South Wales It occurs around the Sydney Basin often in high rainfall areas on shallow sandstone soils on plateaux or escarpments in fire prone areas Growing as a gnarled tree to 20 m 66 ft it is recognisable by its distinctive yellow brown tessellated bark The greyish green leaves are thick and veiny and lanceolate spear or sickle shaped The cream flowerheads grow in panicles in groups of seven and appear in spring Known for many years as Eucalyptus eximia the yellow bloodwood was transferred into the new genus Corymbia in 1995 when it was erected by Ken Hill and Lawrie Johnson It is still seen under the earlier name in some works Yellow bloodwoodYellow bloodwood at ArcadiaScientific classificationKingdom PlantaeClade TracheophytesClade AngiospermsClade EudicotsClade RosidsOrder MyrtalesFamily MyrtaceaeGenus CorymbiaSpecies C eximiaBinomial nameCorymbia eximia Schauer K D Hill amp L A S Johnson 1 Synonyms 1 Eucalyptus eximia Schauer Eucalyptus eximia Schauer var eximiatrunk at Galston Gorge Australia Yellow bloodwood in late bud Rozelle New South Wales Fruiting capsules and seeds in the ANBG Contents 1 Description 2 Taxonomy and naming 3 Distribution and habitat 4 Ecology 5 Uses 6 ReferencesDescription EditThe yellow bloodwood grows as an attractive gnarled tree up to 20 metres 70 feet tall 2 It can have a multistemmed stunted habit when growing on an exposed site 3 The distinctive bark is a yellowish fawn colour and flaky rough in consistency with a somewhat tessellated pattern Measuring up to 20 cm 8 in long and 2 5 cm 1 in wide the adult leaves are greyish green thick and veiny and lanceolate spear shaped or falcate sickle shaped and have a prominent raised yellow midrib and taper to the end They are arranged alternately along the stems Leaves are the same colour above as below the leaf 4 The cream flowers begin as buds in February and are open from August to October 3 and are sometimes used in floral arrangements Groups of seven flowers are arranged in panicles the buds on short stalks pedicellate initially measuring 1 3 to 1 5 cm 0 51 to 0 59 in long by 0 6 cm 0 24 in wide and pear or club shaped 4 The gumnuts are the typical urn shape of most bloodwoods The seeds are without wings 2 5 and are mature by December and remain on the tree for up to 16 months 3 6 Seedlings have opposite leaves for the first three six pairs and these are elliptic to lanceolate in shape These are followed by oblong to lanceolate juvenile leaves which become more alternate along the stems A light blue green in colour these measure 7 5 to 12 5 cm 3 0 to 4 9 in long by 2 5 3 2 cm 0 98 1 26 in wide 4 Taxonomy and naming EditFirst collected by Europeans near the Grose River by Robert Brown and Ferdinand Bauer between September and October 1803 7 the yellow bloodwood was described as Eucalyptus eximia by German botanist Johannes Conrad Schauer in 1843 in Wilhelm Gerhard Walpers book Repertorium Botanices Systematicae 8 9 The species name is derived from the Latin adjective eximius exceptional or uncommon and might related to the distinctive and unusual appearance of either the bark or flowers of the tree 4 In 1995 the genus Eucalyptus was split into three genera by Ken Hill and Lawrie Johnson of the Royal Botanic Gardens Sydney with E eximia transferred into Corymbia 10 Hill and Johnson classified it in the section Ochraria along with eleven other species this group known as yellow bloodwoods 7 A combined analysis of nuclear rDNA ETS ITS and morphological characters published in 2009 found this group to be monophyletic and it was renamed section Naviculares within the subgenus Blakella the name originally coined by Maiden in 1929 as Eucalyptus series Naviculares with C eximia as the type species 11 The common name is derived from the gum veins in the wood 2 Distribution and habitat EditThe yellow bloodwood is found in central New South Wales from Howes Valley in the north to Tolwong in the south 12 Around the Sydney Basin it is common on sandstone plateaux and escarpments in the vicinity of the Nepean and Hawkesbury Rivers and lower Blue Mountains 2 particularly on western aspects of slopes 3 It is seen up to altitudes of 500 metres with annual rainfall of 730 1800 mm 4 It grows in dry sclerophyll forest on sandstone soils associated with such species as red bloodwood Corymbia gummifera dwarf apple Angophora hispida smooth barked apple Angophora costata narrow leaved stringybark Eucalyptus sparsifolia white stringybark E globoidea sydney peppermint E piperita grey gum E punctata scribbly gums E haemastoma and E racemosa and black sheoak Allocasuarina littoralis 4 3 Ecology EditThe yellow bloodwood regenerates by regrowing from epicormic buds after bushfire Trees live for over a hundred years The grey headed flying fox Pteropus poliocephalus eats the flowers 3 It is highly sensitive to the white leaf and shoot blight Sporothrix pitereka 13 Uses EditThe relatively small size and rarity of Corymbia eximia meant it was rarely used as timber 4 It has been used as a street tree in Australian cities 14 and its small size and attractive bark make it a good tree for backyards 15 although it is too large for small gardens It flowers prolifically but the flowering period is short 16 C eximia was listed in the catalogue of Treseder s nursery of Truro in Cornwall in 1905 17 A smaller form nana has been propagated and used as a garden or street tree References Edit a b Corymbia eximia Australian Plant Census Retrieved 10 February 2020 a b c d Fairley Alan Moore Philip 2000 Native Plants of the Sydney District An Identification Guide 2nd ed Kenthurst NSW Kangaroo Press p 196 ISBN 0 7318 1031 7 a b c d e f Benson Doug McDougall Lyn 1998 Ecology of Sydney plant species Part 6 Dicotyledon family Myrtaceae Cunninghamia 5 4 809 987 849 a b c d e f g Boland Douglas J Brooker M I H Chippendale G M McDonald Maurice William 2006 Forest trees of Australia Collingwood Victoria CSIRO Publishing p 254 ISBN 0 643 06969 0 A Field Guide to Eucalypts Brooker amp Kleinig volume 1 ISBN 0 909605 62 9 page 49 Corymbia eximia Centre for Australian National Biodiveristy Research Retrieved 6 June 2020 a b Hill Ken D Johnson L A S 1995 Systematic studies in the Eucalypts 7 A revision of the bloodwoods genus Corymbia Myrtaceae Telopea 6 2 3 185 504 doi 10 7751 telopea19953017 Eucalyptus eximia APNI Retrieved 10 February 2020 Schauer Johannes Conrad Walpers Wilhelm Gerhard 1843 Repertorium botanices systematicae New York Sumtibus Friderici Hofmeister pp 925 926 Retrieved 10 February 2020 Corymbia eximia APNI Retrieved 10 February 2020 Parra O C Bayly M J Drinnan A Udovicic F Ladiges P 2009 Phylogeny major clades and infrageneric classification of Corymbia Myrtaceae based on nuclear ribosomal DNA and morphology Australian Systematic Botany 22 5 384 399 doi 10 1071 SB09028 Corymbia eximia PlantNET NSW Flora Online Retrieved 2010 01 24 Keane P J Kile G A Podger F D 2000 Diseases and pathogens of eucalypts Collingwood Victoria CSIRO Publishing p 206 ISBN 0 643 06523 7 Yellow Bloodwood Corymbia eximia Nunawading Victoria Whitehorse City Council 2011 Archived from the original on 24 April 2011 Retrieved 3 September 2011 Corymbia eximia Yellow Bloodwood PDF Bondi Junction New South Wales Waverley Council 2011 Retrieved 3 September 2011 Elliot Rodger W Jones David L Blake Trevor 1992 Encyclopaedia of Australian Plants Suitable for Cultivation Vol 4 Eu Go Port Melbourne Lothian Press pp 90 91 ISBN 0 85091 213 X Treseder Suzanne 2004 A passion for plants the Treseders of Truro Alison Hodge Publishers p 112 ISBN 0 906720 38 9 Retrieved from https en wikipedia org w index php title Corymbia eximia amp oldid 1009610513, wikipedia, wiki, book, books, library,
