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Ceratopetalum fruits from Australian cainozoic sediments and their significance for petal evolution in the genus

Citation

Barnes, RW and Hill, RS, Ceratopetalum fruits from Australian cainozoic sediments and their significance for petal evolution in the genus, Australian Systematic Botany, 12, (5) pp. 635-645. ISSN 1030-1887 (1999) [Refereed Article]

DOI: doi:10.1071/SB98014

Abstract

Ceratopetalum Sm. fruits are characterised by 4-6 enlarged woody sepals radiating from a central disk, a semi-inferior ovary, anthers between and above each sepal and three-trace sepal venation with a prominent intra-sepal vein. Two new species of Ceratopetalum are described from fruits extracted from Australian Cainozoic sediments, C. westermannii and C. maslinensis. The presence of Ceratopetalum in Middle Eocene Maslin Bay sediments, South Australia, indicates a more widespread geographic distribution for the genus during the Cenozoic. Petally is present in one extant and two fossil species and probably represents the ancestral state despite apetally in the oldest known fossil. Petals have probably been secondarily lost in response to fruit specialisation or a change in pollinator vector.

Item Details

Item Type:Refereed Article
Research Division:Biological Sciences
Research Group:Evolutionary Biology
Research Field:Plant Systematics and Taxonomy
Objective Division:Expanding Knowledge
Objective Group:Expanding Knowledge
Objective Field:Expanding Knowledge in the Environmental Sciences
Author:Barnes, RW (Dr Richard Barnes)
Author:Hill, RS (Professor Bob Hill)
ID Code:17470
Year Published:1999
Web of Science® Times Cited:12
Deposited By:Plant Science
Deposited On:1999-08-01
Last Modified:2011-08-05
Downloads:0

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