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Journal

1997

Classification

Articles 1 - 3 of 3

Full-Text Articles in Life Sciences

Hierarchial Roots And Shoots Or Opera Jehovae Magna! (Psalms 111:2), Dan H. Nicolson Jan 1997

Hierarchial Roots And Shoots Or Opera Jehovae Magna! (Psalms 111:2), Dan H. Nicolson

Aliso: A Journal of Systematic and Floristic Botany

The philosophy of Linnaeus's classification, Systema Naturae, is briefly reviewed, as well as those of post-Linnaean systems of plant classification. Texts of current codes of nomenclature pertaining to hierarchy, including associated rank terminations, are compared.


Problems In Cladistic Classification: Higher-Level Relationships In Land Plants, Peter R. Crane, Paul Kenrick Jan 1997

Problems In Cladistic Classification: Higher-Level Relationships In Land Plants, Peter R. Crane, Paul Kenrick

Aliso: A Journal of Systematic and Floristic Botany

Recent cladistic analyses of green plants recognize an extensive hierarchical series of relatively well-supported monophyletic groups. Translating this hierarchical pattern of relationships into a usable and informative written classification is important for purposes of scientific communication, research and teaching. However, in the context of the "Linnean" hierarchy, as manifested in the current International code of Botanical Nomenclature (ICBN), effecting this translation confronts substantial practical difficulties--especially the proliferation of hierarchical levels. These problems are exacerbated by the current emphasis of the ICBN on a hierarchy in which different ranks have different formal rank-based endings. These difficulties could be ameliorated by de-emphasizing ...


Classification: More Than Just Branching Patterns Of Evolution, Tod F. Stuessy Jan 1997

Classification: More Than Just Branching Patterns Of Evolution, Tod F. Stuessy

Aliso: A Journal of Systematic and Floristic Botany

The past 35 years in biological systematics have been a time of remarkable philosophical and methodological developments. For nearly a century after Darwin's Origin of Species, systematists worked to understand the diversity of nature based on evolutionary relationships. Numerous concepts were presented and elaborated upon, such as homology, parallelism, divergence, primitiveness and advancedness, cladogenesis and anagenesis. Classifications were based solidly on phylogenetic concepts; they were avowedly monophyletic. Phenetics emphasized the immense challenges represented by phylogeny reconstruction and advised against basing classifications upon it. Pheneticists forced reevaluation of all previous classificatory efforts, and objectivity and repeatability in both grouping ...