01223nas a2200157   4500008004100000245007300041210006900114260001200183300001400195490000700209520068400216100001700900700001500917700001700932856011600949       2003                        eng d00aA re-evaluation of Isoetes savatieri franchet in Argentina and Chile0 areevaluation of Isoetes savatieri franchet in Argentina and Chil  c2003///  a126 - 1360 v933 aIsoetes suvutieri has traditionally been interpreted as being a uniform aquatic ranging from the southernmost regions of South America to the central Andes of Chile and Argentina. An examination of herbarium material supports the recognition of two taxa, a southern I. savatieri and a more northern I. chubutiana, from central Chile and Argentina. The latter taxon is hexaploid and described here as a new species. The morphology of these species suggest that they are sister species resulting from divergence following a polyploidy event. These species, and several other species pairs, provide the best and, to date, only examples of allopatric divergence in polyploid Isoetes.1 aHickey, R.J.1 aMacluf, C.1 aTaylor, W.C.  uhttp://www.scopus.com/inward/record.url?eid=2-s2.0-0141676348&partnerID=40&md5=323242638fd59ed4fe04b166c7422ad8