Floristic corridors for moss distribution across the Neovolcanic Belt of Mexico. III. The Michoacan corridors
1998
M, Claudio Delgadillo
The distribution of mosses from four topographic discontinuities or corridors (Tuxpan, Morelia, Patzcuaro and Chapala) suggests that the floristic interchange between northern and southern areas across the Neovolcanic Belt in western Mexico is feasible. Mosses of various phytogeographical affinities are present on either side and in the corridors, but certain other taxa are only represented on one side of the Belt. The tropical species are virtually absent from northern (Plateau) areas indicating a joint barrier effect of the Belt and the Balsas Depression. The sources of the corridor moss flora are heterogeneous; in addition to diverse phytogeographical affinities, the altitudinal distribution shows a close relationship with the upper elevations, including the alpine areas. Bryum capillare var. flaccidum, Entodon sullivantii and Fabronidium guatemalensis are new records for Mexico.
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