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Organisms use diverse strategies to thrive in varying habitats. While life history theory partly explains these relationships, the combined impact of resource availability and disturbance frequency on life form strategy evolution has received limited attention.
We use Chamaecrista species, a legume plant lineage with a high diversity of plant life forms in the Neotropics, and employ ecological niche...
A new circumscription of Chamaecrista sect. Chamaecrista ser. Coriaceae is presented based on the results of molecular and morphological analyses. The series is monophyletic upon exclusion of three species that were included within it by Irwin and Barneby. Morphological variation within the series is discussed. Characters previously neglected, such as the detailed morphology of extrafloral nectaries...
A new species, Chamaecrista truncata, from southeastern Brazil, is described, illustrated and compared to its putative closest relative, C. parvistipula. The new species belongs to Chamaecrista sect. Chamaecrista ser. Flexuosae which is characterized by asymmetrical leaflets with palmate venation, quadrangular stems and axillary peduncles. Additionally, the venation pattern of the leaflets and the...
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