It contains over 95,000 articles and is probably the most comprehensive computerised index to higher plant micromorphology in existence. It covers most work published on plant anatomy in the twentieth and twenty-first centuries, and is regularly updated with new literature. All aspects of angiosperm and gymnosperm plant structure are covered, together with vegetative anatomy of pteridophytes. Common subject areas include ontogeny, ultrastructure, techniques, palaeobotany, embryology and seed anatomy.
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