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Article << Previous     |         Contents Vol 24(5)

A new Australian genus, Androcalva, separated from Commersonia (Malvaceae s.l. or Byttneriaceae)

C. F. Wilkins A C D and B. A. Whitlock B

A School of Plant Biology, The University of Western Australia, Crawley, WA 6009, Australia.
B Department of Biology, University of Miami, Coral Gables, Florida 33124, USA.
C Western Australian Herbarium, Department of Environment and Conservation, Locked Bag 104, Bentley Delivery Centre, WA 6983, Australia.
D Corresponding author. Email: carolyn.wilkins@dec.wa.gov.au

Australian Systematic Botany 24(5) 284-349 http://dx.doi.org/10.1071/SB10032
Submitted: 19 July 2011  Accepted: 10 August 2011   Published: 18 November 2011


 
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Abstract

A new genus, Androcalva C.F.Wilkins & Whitlock, is here described and includes 22 species previously described as Commersonia, four species formerly described as Rulingia and seven new species, including A. aphrix C.F.Wilkins, A. perlaria C.F.Wilkins, A. bivillosa C.F.Wilkins, A. adenothalia C.F.Wilkins, A. fragifolia C.F.Wilkins, A. incilis C.F.Wilkins and A. lachna C.F.Wilkins. Rulingia pauciflora Turcz. is here placed in synonymy with C. gaudichaudii J.Gay as A. gaudichaudii. Recognition of Androcalva is supported by the results of a previous molecular phylogenetic analysis demonstrating that neither Rulingia nor Commersonia as previously circumscribed is monophyletic. Species of Androcalva share characters of extrorse anther dehiscence and glabrous central staminodes. In contrast, species in the redefined Commersonia have anthers with sublatrorse dehiscence and hairy central staminodes. Taxonomic descriptions, a key, distribution maps, conservation status and illustrations are presented.



References

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Whitlock BA, Hale AM, Indorf JL, Wilkins CF (2011) Polyphyly of Rulingia and Commersonia, (Lasiopetaleae, Malvaceae s.l.). Australian Systematic Botany 24, 215–225.
CrossRef |

Wilkins CF (2002) A systematic study of Lasiopetaleae (Malvaceae s.l. or Sterculiaceae s.s.). PhD Thesis, The University of Western Australia, Perth.

Wilkins CF, Chappill JA (2002a) New chromosome numbers in Lasiopetaleae. Australian Systematic Botany 15, 1–8.
CrossRef |

Wilkins CF, Chappill JA (2002b) Seed and seedling morphology and seed anatomy of Lasiopetaleae (Malvaceae s.l. or Sterculiaceae). Australian Systematic Botany 15, 545–563.
CrossRef |

Wilkins CF, Whitlock BA (2011) A revision of Commersonia including Rulingia (Malvaceae s.l. or Byttneriaceae). Australian Systematic Botany 24, 226–283.
CrossRef |


   
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