Header

UZH-Logo

Maintenance Infos

A Comparison of Floral Structures of Anisophylleaceae and Cunoniaceae and the Problem of their Systematic Position


Matthews, M (2001). A Comparison of Floral Structures of Anisophylleaceae and Cunoniaceae and the Problem of their Systematic Position. Annals of Botany, 88(3):439-455.

Abstract

Flowers of Anisophyllea(Anisophylleaceae, Cucurbitales) andCeratopetalum (Cunoniaceae, Oxalidales) are surprisingly similar in appearance. To date, these families have never been interpreted as closely related, and even in present molecular (rbcL) studies they appear in different orders of eurosids I (APG, Annals of the Missouri Botanical Garden85:531-553, 1998). In this investigation, flowers of selected taxa of both families are morphologically and anatomically compared. In addition, previous work on the two families is reviewed. The results strongly emphasize the great similarity in all floral organs. Some special similarities include the occurrence of trimerous flowers, isomerous organ whorls (including the gynoecium), valvate sepals, digitate petals, obdiplostemony, incurved filaments in bud with similar anthers, similar pollen, similar nectaries, carpels with free styles, a canal in the centre of each individual carpel as well as in the centre of the entire gynoecium along the symplicate zone, and similar ovules with a slit-shaped micropyle. In addition, recently recovered Late Cretaceous floral fossils that share features of both families further emphasize a potential close relationship. However, if more extensive molecular studies are performed in the future that support the current disparate position of the two families, then an explanation of the biological/functional similarities in floral structure should be attempted: specifically, whether this suite of features is a symplesiomorphy for basal rosids, or an autapomorphy for each family. Copyright 2001 Annals of Botany Company

Abstract

Flowers of Anisophyllea(Anisophylleaceae, Cucurbitales) andCeratopetalum (Cunoniaceae, Oxalidales) are surprisingly similar in appearance. To date, these families have never been interpreted as closely related, and even in present molecular (rbcL) studies they appear in different orders of eurosids I (APG, Annals of the Missouri Botanical Garden85:531-553, 1998). In this investigation, flowers of selected taxa of both families are morphologically and anatomically compared. In addition, previous work on the two families is reviewed. The results strongly emphasize the great similarity in all floral organs. Some special similarities include the occurrence of trimerous flowers, isomerous organ whorls (including the gynoecium), valvate sepals, digitate petals, obdiplostemony, incurved filaments in bud with similar anthers, similar pollen, similar nectaries, carpels with free styles, a canal in the centre of each individual carpel as well as in the centre of the entire gynoecium along the symplicate zone, and similar ovules with a slit-shaped micropyle. In addition, recently recovered Late Cretaceous floral fossils that share features of both families further emphasize a potential close relationship. However, if more extensive molecular studies are performed in the future that support the current disparate position of the two families, then an explanation of the biological/functional similarities in floral structure should be attempted: specifically, whether this suite of features is a symplesiomorphy for basal rosids, or an autapomorphy for each family. Copyright 2001 Annals of Botany Company

Statistics

Citations

Dimensions.ai Metrics
45 citations in Web of Science®
43 citations in Scopus®
Google Scholar™

Altmetrics

Downloads

17 downloads since deposited on 20 Sep 2018
4 downloads since 12 months
Detailed statistics

Additional indexing

Item Type:Journal Article, refereed, original work
Communities & Collections:National licences > 142-005
Dewey Decimal Classification:580 Plants (Botany)
Scopus Subject Areas:Life Sciences > Plant Science
Language:English
Date:1 September 2001
Deposited On:20 Sep 2018 14:15
Last Modified:15 Apr 2021 14:47
Publisher:Oxford University Press
ISSN:0305-7364
OA Status:Hybrid
Free access at:Publisher DOI. An embargo period may apply.
Publisher DOI:https://doi.org/10.1006/anbo.2001.1494

Download

Hybrid Open Access

Download PDF  'A Comparison of Floral Structures of Anisophylleaceae and Cunoniaceae and the Problem of their Systematic Position'.
Preview
Content: Published Version
Language: English
Filetype: PDF (Nationallizenz 142-005)
Size: 9MB
View at publisher