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Morphologie pollinique des Caryophyllaceae du Québec nordique, des territoires adjacents et de l'archipel Arctique canadien

1993; Canadian Science Publishing; Volume: 71; Issue: 7 Linguagem: Inglês

10.1139/b93-101

1480-3305

Johanne Parent, Pierre J. H. Richard,

Plant Diversity and Evolution

Pollen grains of 38 species (12 genera) of Caryophyllaceae from nordic Quebec, adjacent territories, and from the Canadian Arctic archipelago were studied in light microscopy. Thirteen pollen forms have been recognized, of which 11 are pantoporate (Cerastium – Stellaria type, Lychnis alpina, Melandrium affine type, Melandrium apetalum, Minuartia groenlandica, Minuartia rubella type, Sagina caespitosa – Sagina nivalis, Sagina nodosa, Sagina procumbens – Sagina saginoides, Silene acaulis, and Silene vulgaris) and 2 others colpate (Spergula arvensis and Spergularia canadensis). The data confirm the taxonomic value of the ratio (distance between two adjacent pores)/(grain diameter). A more precised identification of pollen grains of Caryophyllaceae, which is considered a rather uniform family, will allow a better pollen data interpretation whichever the samples studied. Key words: pollen, morphology, Caryophyllaceae, Quebec, Arctic, Canada.