Biology:Acacia binervia

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Short description: Species of plant

Coast myall
Acacia binervia-Minchen.jpg
Scientific classification edit
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Clade: Rosids
Order: Fabales
Family: Fabaceae
Subfamily: Caesalpinioideae
Clade: Mimosoid clade
Genus: Acacia
Species:
A. binervia
Binomial name
Acacia binervia
(J.C.Wendl.) J.F.Macbr.
Acacia binerviaDistMap117.png
Occurrence data from AVH

Acacia binervia, commonly known as the coast myall, is a wattle native to New South Wales and Victoria. It can grow as a shrub or as a tree reaching 16 m in height.[1] This plant is reportedly toxic to livestock as the foliage (phyllodes) contain a glucoside which can produce hydrogen cyanide if cut.[1]

Taxonomy

German botanist Johann Christoph Wendland first described this species as Mimosa binervia in 1798,[2] before American botanist James Francis Macbride reclassified it in the genus Acacia in 1919.[3] Common names include coast myall and rosewood.[3] Acacia glaucescens is an illegitimate name.[4]

Description

Acacia binervia grows as a shrub to small tree anywhere from 2 to 16 m (6.6 to 52.5 ft) high. The bark is dark brown to grey in colour, and the elliptic to sickle-shaped (falcate) phyllodes are 6–15 cm (2.4–5.9 in) in length and 0.5–2.3 cm (0.20–0.91 in) wide. The cylindrical yellow flowers appear in spring (August to October).[1] Flowering is followed by the development of 6–8 cm long seed pods, which are ripe by December.[5]

Distribution and habitat

Acacia binervia is found in central New South Wales from the Hunter Region south, and to Bungonia in the southwest, and continuing south into Victoria.[1] In the Sydney basin, it grows on a variety of soils and associated plant communities—alluvial soils, sandstone-, shale- or trachyte-based soils, generally with good drainage. It grows in dry sclerophyll forest, associated with such species as yellow bloodwood (Corymbia eximia), grey gum (Eucalyptus punctata), narrow-leaved ironbark (E. crebra), mugga ironbark (E. sideroxylon), or more open woodland with narrow-leaved ironbark and black cypress pine (Callitris endlicheri), and riparian (riverbank) forest with river peppermint (E. elata) and gossamer wattle (Acacia floribunda).[5]

Ecology

Acacia binervia regenerates from bushfire by a soil-borne seedbank, the seeds germinate and grow after fire while adult plants are killed. The frequency of fire for the cycle to persist is anywhere from 10 to 50 years.[5] It is useful to bees in the honey industry.[5]

Cultural significance

For the Dharawal people, the flowering of Acacia binervia was used as a seasonal indicator of the presence of fish in bays and estuaries.[6]

References

  1. 1.0 1.1 1.2 1.3 P.G. Kodela. "New South Wales Flora Online: Acacia binervia". Royal Botanic Gardens & Domain Trust, Sydney, Australia. http://plantnet.rbgsyd.nsw.gov.au/cgi-bin/NSWfl.pl?page=nswfl&lvl=sp&name=Acacia~binervia. 
  2. "Mimosa binervia J.C.Wendl.". Australian Plant Name Index (APNI), IBIS database. Centre for Plant Biodiversity Research, Australian Government. http://www.anbg.gov.au/cgi-bin/apni?taxon_id=19422. 
  3. 3.0 3.1 "Acacia binervia (J.C.Wendl.) J.F.Macbr.". Australian Plant Name Index (APNI), IBIS database. Centre for Plant Biodiversity Research, Australian Government. http://www.anbg.gov.au/cgi-bin/apni?taxon_id=4867. 
  4. "Acacia glaucescens Willd. [nom. illeg. "]. Australian Plant Name Index (APNI), IBIS database. Centre for Plant Biodiversity Research, Australian Government. http://www.anbg.gov.au/cgi-bin/apni?taxon_id=9076. 
  5. 5.0 5.1 5.2 5.3 Benson, Doug; McDougall, Lyn (1996). "Ecology of Sydney Plant Species Part 4: Dicotyledon family Fabaceae". Cunninghamia 4 (4): 552–752. ISSN 0727-9620. http://www.rbgsyd.nsw.gov.au/__data/assets/pdf_file/0006/57849/Cun4Ben552.pdf. Retrieved 2011-11-01. 
  6. "D'harawal calendar". Bureau of Meteorology. 2016. http://www.bom.gov.au/iwk/calendars/dharawal.shtml. 

Wikidata ☰ Q2822195 entry