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A re-evaluation of Isoetes savatieri franchet in Argentina and Chile

Publication Type:Journal Article
Year of Publication:2003
Authors:R. J. Hickey, Macluf, C., Taylor, W. C.
Journal:American Fern Journal
Volume:93
Issue:3
Pagination:126 - 136
Date Published:2003///
Abstract:

Isoetes 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.

URL:http://www.scopus.com/inward/record.url?eid=2-s2.0-0141676348&partnerID=40&md5=323242638fd59ed4fe04b166c7422ad8
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