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- Title
Anatomy of Brazilian Eriocaulaceae: correlation with taxonomy and habitat using multivariate analyses.
- Authors
Scatena, V.; Giulietti, A.; Borba, E.; Berg, C.
- Abstract
In this study we present a survey on vegetative anatomy in species of Actinocephalus, Blastocaulon, Eriocaulon, Leiothrix, Paepalanthus, Philodice, Syngonanthus, and Tonina (Eriocaulaceae). Multivariate analyses were used to correlate anatomical characters to taxa and the habitats where the species occur. Root and stem anatomical characters seem to be more affected by environmental factors where these species occur, and seem of little value for delimiting major taxonomic groups within the family. Other characters in the leaves, such as epidermis with thickened wall cells, compartmented substomatal chambers, mesophyll with hypodermis, compact chlorenchyma, collenchymatous bundle sheath extensions, and numerous vascular bundles, were shown to be important for defining species clusters in Leiothrix, Syngonanthus, and Paepalanthus subg. Platycaulon. Similarly, loosely aggregated chlorenchyma caused Blastocaulon, Eriocaulon, Philodice, Syngonanthus sect. Carpocephalus, S. sect. Syngonanthus, and Tonina, genera from humid environments, to cluster. Scape characters appear to be more informative in discriminating groups. This situation probably reflects lower selection pressures determining anatomical characters of this organ.
- Subjects
ANIMAL classification; ERIOCAULACEAE; MULTIVARIATE analysis; ANALYSIS of variance; COMMELINALES; PLANT genetics
- Publication
Plant Systematics & Evolution, 2005, Vol 253, Issue 1-4, p1
- ISSN
0378-2697
- Publication type
Article
- DOI
10.1007/s00606-004-0295-z