INVESTIGADORES
SOSA Maria De Las mercedes
artículos
Título:
Stemodia diplohyptoides (Plantaginaceae, Gratiolae): a new diploid species from
Autor/es:
MARIA DE LAS MERCEDES SOSA; MASSIMILIANO DEMATTEIS
Revista:
Phytotaxa
Editorial:
Magnolia Press
Referencias:
Lugar: Auckland; Año: 2014 vol. 186 p. 271 - 278
ISSN:
1179-3155
Resumen:
Stemodia diplohyptoides (Plantaginaceae), a new species from Gratiolae tribe is described and illustrated. This taxon is found in northeastern Argentina, at the edge of the Parana River that surrounds the north and center of Misiones province Stemodia hyptoides(Argentina). It is a diploid that has been traditionally treated under , which is here re-circumscribed to include only autopolyploid plants (tetraploid and hexaploid). The diploid specimens may be distinguished from the poly- S. hyptoidesploid by several morphological features such as shape, pubescence and margin of the leaves, corolla length and corolla tube pubescence. In addition, scanning electron microphotographs of seeds, chromosomes numbers, a distribution map and a key to distinguish the related species are also provided. On the basis of morphological, cytological and geographi- cal data, some evolutionary considerations are inferred.