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Phylogenetic relationships of Samyda...

Samarakoon, Tharangamala.

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Phylogenetic relationships of Samydaceae and taxonomic revision of the species of Casearia in south-central Asia.

Record Type:	Electronic resources : Monograph/item
Title/Author:	Phylogenetic relationships of Samydaceae and taxonomic revision of the species of Casearia in south-central Asia./
Author:	Samarakoon, Tharangamala.
Published:	Ann Arbor : ProQuest Dissertations & Theses, : 2015,
Description:	173 p.
Notes:	Source: Dissertation Abstracts International, Volume: 76-08(E), Section: B.
Contained By:	Dissertation Abstracts International76-08B(E).
Subject:	Systematic biology. -
Online resource:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3689142
ISBN:	9781321682106

Phylogenetic relationships of Samydaceae and taxonomic revision of the species of Casearia in south-central Asia.
Samarakoon, Tharangamala.

Phylogenetic relationships of Samydaceae and taxonomic revision of the species of Casearia in south-central Asia. - Ann Arbor : ProQuest Dissertations & Theses, 2015 - 173 p.

Source: Dissertation Abstracts International, Volume: 76-08(E), Section: B.

Thesis (Ph.D.)--The University of Southern Mississippi, 2015.

This item is not available from ProQuest Dissertations & Theses.

The flowering plant family Samydaceae was recently reinstated to include 14 genera and about 256 species of tropical trees and shrubs. Preliminary analyses of relationships in the family, however, indicated that the largest genus in the family, Casearia, is not monophyletic and that several smaller groups are probably misplaced. In order to affirm or refute those hypotheses, additional DNA sequence data with broader taxon sampling from the Old World were gathered for phylogenetic analysis. Phylogenetic inferences were drawn from parsimony, likelihood, and Bayesian analyses of plastid and nuclear DNA data. The results affirm the monophyly of Samydaceae and consistently recover four major clades, which are here circumscribed as four tribes. The results also affirm that Casearia is not monophyletic. Rather, several small genera (Samyda, Laetia sensu stricto, Hecatostemon, and Zuelania) are nested within it. One previously recognized genus, Piparea, which is more closely related to Ryania and Trichostephanus, should be reinstated. Nomenclatural changes are presented here to bring generic circumscriptions in line with phylogenetic relationships within Samydaceae and with the proposed conservation of the name Casearia over Samyda and Laetia. A taxonomic revision of Casearia in south-central Asia, including the area from Pakistan to Burma and south from the Himalayas to Sri Lanka, is also presented. Thirteen species are recognized, nine of which are endemic to south-central Asia and four of which are more widespread, also occurring eastward into China, southeast Asia, and Malesia. Descriptions, taxonomic keys, and distributional maps are provided for the species.

ISBN: 9781321682106Subjects--Topical Terms:

3173492
Systematic biology.

Phylogenetic relationships of Samydaceae and taxonomic revision of the species of Casearia in south-central Asia.
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245 1 0 $a Phylogenetic relationships of Samydaceae and taxonomic revision of the species of Casearia in south-central Asia.
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300 $a 173 p.
500 $a Source: Dissertation Abstracts International, Volume: 76-08(E), Section: B.
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502 $a Thesis (Ph.D.)--The University of Southern Mississippi, 2015.
506 $a This item is not available from ProQuest Dissertations & Theses.
520 $a The flowering plant family Samydaceae was recently reinstated to include 14 genera and about 256 species of tropical trees and shrubs. Preliminary analyses of relationships in the family, however, indicated that the largest genus in the family, Casearia, is not monophyletic and that several smaller groups are probably misplaced. In order to affirm or refute those hypotheses, additional DNA sequence data with broader taxon sampling from the Old World were gathered for phylogenetic analysis. Phylogenetic inferences were drawn from parsimony, likelihood, and Bayesian analyses of plastid and nuclear DNA data. The results affirm the monophyly of Samydaceae and consistently recover four major clades, which are here circumscribed as four tribes. The results also affirm that Casearia is not monophyletic. Rather, several small genera (Samyda, Laetia sensu stricto, Hecatostemon, and Zuelania) are nested within it. One previously recognized genus, Piparea, which is more closely related to Ryania and Trichostephanus, should be reinstated. Nomenclatural changes are presented here to bring generic circumscriptions in line with phylogenetic relationships within Samydaceae and with the proposed conservation of the name Casearia over Samyda and Laetia. A taxonomic revision of Casearia in south-central Asia, including the area from Pakistan to Burma and south from the Himalayas to Sri Lanka, is also presented. Thirteen species are recognized, nine of which are endemic to south-central Asia and four of which are more widespread, also occurring eastward into China, southeast Asia, and Malesia. Descriptions, taxonomic keys, and distributional maps are provided for the species.
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