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Title:The Acacia Berlandieri Species Group: Armed New World Members of Subgenus Aculeiferum (Fabaceae) With Distributions Restricted North of the Isthmus of Tehuantepec, Mexico
Author(s):Glass, Catherine Elizabeth
Doctoral Committee Chair(s):David Seigler
Department / Program:Plant Biology
Discipline:Plant Biology
Degree Granting Institution:University of Illinois at Urbana-Champaign
Subject(s):Biology, Genetics
Abstract:Data from all 15 non-hybrid ingroup and seven outgroup species for 24 discrete morphological characters were analysed by unconstrained simultaneous parsimony analysis using PAUP* 4.0, both with and without hybrids. For these analyses with the branch-and-bound algorithm, the character states were assumed to be unordered, and character states were weighted equally. This resulted in 54 optimal 70-step trees in the analysis without hybrids. The presence of a unique synapomorphy (petiolar glands that are sessile or slightly raised), weakly supported monophyly of the A. berlandieri group. In the strict consensus tree there was a trichotomy of a single species, a ten species clade and a four species clade. Synapomorphies that support the clade of ten species include: possession of foliar short shoots (unique), legume margins strongly constricted, and possession of axillary inflorescences. Synapomorphies that support the clade of four species include possession of petiolar glands that are sessile (unique) and lignescent legumes. Descriptions, including drawings, distribution maps, updated nomenclature, synonomy, determination of type specimens, and exsiccatae, were provided for each species.
Issue Date:2003
Description:293 p.
Thesis (Ph.D.)--University of Illinois at Urbana-Champaign, 2003.
Other Identifier(s):(MiAaPQ)AAI3101847
Date Available in IDEALS:2015-09-28
Date Deposited:2003

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