The taxonomic status of Mimulus glabratus var. michiganensis (Pennell) Fassett.

Show simple item record Bliss, Peggy en_US
dc.coverage.spatial Reese's Swamp en_US
dc.coverage.spatial Damsite en_US
dc.coverage.spatial Beaver Island en_US 2007-06-14T19:46:48Z 2007-06-14T19:46:48Z 1982 en_US
dc.description.abstract There are two purported varieties of Mimulus glabratus in Michigan. Both commonly grow in groups of fifty to several hundred individuals in shallow water along streams and lake shores. One is the widespread M. glabratus var. fremontii which ranges from Ontario to Manitoba and south to Mexico. The other is M. glabratus var. michiganensis, a Michigan endemic found only in the Mackinac Straits region in Cheboygan, Mackinac, Charlevoix and Emmet Counties. Pennel (1935) and Fassett (1939) accorded the later varietal recognition due to its larger flower, more sinuate-dentate leaves, unspotted corolla, and a more upright habit than M. glabratus var. fremontii. However, an examination of herbarium specimens by Crispin (personal communication) and myself suggests that a continuum of morphological diversity between the two varieties may exist. There are specimens annotated by Pennell as M. glabratus var. fremontii whose leaf margins are as sinuate-dentate as those of M. glabratus var. michiganensis. Other specimens labelled as M. glabratus var. michiganensis are noted to have had slightly spotted corollas and McArthur et. al. (1972) reports the same chromosome number for both varieties (n=15). At present, M. glabratus var. michiganensis is listed as threatened by the state of Michigan, however, it is not considered threatened by the Federal Endangered Species Office because of its uncertain taxonomic status. The purpose of this investigation was to determine whether M. glabratus var. michiganensis is indeed a distinct variety, or simply a morphological extreme of the widespread M. glabratus var. fremontii. en_US
dc.format.extent 1189694 bytes
dc.format.extent 3144 bytes
dc.format.mimetype application/pdf
dc.format.mimetype text/plain
dc.subject NETP en_US
dc.subject.other MIMULUS en_US
dc.subject.other VARIATION en_US
dc.subject.other TAXONOMY en_US
dc.subject.other MORPHOLOGY en_US
dc.subject.other WATER en_US
dc.subject.other CHEMISTRY en_US
dc.subject.other HABITAT en_US
dc.subject.other ANALYSIS en_US
dc.subject.other TRANSPLANTS en_US
dc.title The taxonomic status of Mimulus glabratus var. michiganensis (Pennell) Fassett. en_US
dc.type Working Paper en_US
dc.subject.hlbsecondlevel Natural Resource and Environment en_US
dc.subject.hlbtoplevel Science en_US
dc.contributor.affiliationum Biological Station, University of Michigan en_US
dc.contributor.affiliationumcampus Ann Arbor en_US
dc.description.bitstreamurl en_US
dc.description.filedescription Description of 1918.pdf : Access restricted to on-site users at the U-M Biological Station. en_US
dc.owningcollname Biological Station, University of Michigan (UMBS)
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