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- Title
Insights on Ardisia and Stylogyne (Myrsinoideae-Primulaceae) based on pollen morphology.
- Authors
Carrijo, Tatiana; Silva Fourny, Ana; Fátima Freitas, Maria; Gonçalves-Esteves, Vania; Peixoto, Ariane
- Abstract
Species of Ardisia ( A. catharinensis, A. guianensis, and A. semicrenata) and Stylogyne ( S. amazonica, S. latifolia, S. orinocensis, S. poeppigii, S. schomburgkiana, S. surinamensis, S. laevigata, and S. leptantha), with doubtful circumscriptions because of shared overlapping or continuous characters, were investigated to clarify their taxonomy. The study of these species allowed us to evaluate previous studies in which pollen morphology was applied to distinguish the genus Stylogyne from Ardisia. Acetolyzed pollen grains were measured, described, and illustrated using light microscopy, while nonacetolyzed pollen grains were analyzed using scanning electron microscopy. Both Ardisia and Stylogyne have pollen grains on isopolar monads that may be subprolate, prolate, oblate spheroidal, or prolate spheroidal, with a reticulate and heterobrochate exine, and tricolporate apertures. Differences among species usually consist of the size of the grains, length of the colpi (or size of the apocolpi), and size of the polar area and reticulum. Granules inside the lumina, which were not observed in pollen grains of Ardisia in previous studies, are reported here. Pollen morphology proved to be uninformative to differentiate the genera Ardisia and Stylogyne, but useful to distinguish some related species within each genus.
- Subjects
LATIN America; PLANT species; POLLEN; PLANT morphology; PALYNOLOGY; MYRSINACEAE; ERICALES; PLANT classification
- Publication
Plant Systematics & Evolution, 2011, Vol 297, Issue 3/4, p261
- ISSN
0378-2697
- Publication type
Article
- DOI
10.1007/s00606-011-0515-2