Anastrophyllum assimile and Marsupella revoluta , new to the interior of North America

Anastrophyllum assimile (Mitt.) Steph. and Marsupella revoluta (Nees) Lindb. are reported from the Keele Peak area, central-eastern Yukon Territory, Canada, and M. revoluta is also reported from Devon Island, Northwest Territories, Canada. These new localities extend a pattern of disjunct occurrence...

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Bibliographic Details
Published in:Canadian Journal of Botany
Main Author: Horton, Diana G.
Format: Article in Journal/Newspaper
Language:English
Published: Canadian Science Publishing 1977
Subjects:
Plant Science
Arctic
Yukon
Northwest Territories
Canada
British Columbia
Devon Island
Keele Peak
Archipelago
Alaska
Online Access:http://dx.doi.org/10.1139/b77-282
http://www.nrcresearchpress.com/doi/pdf/10.1139/b77-282
Description
Summary:Anastrophyllum assimile (Mitt.) Steph. and Marsupella revoluta (Nees) Lindb. are reported from the Keele Peak area, central-eastern Yukon Territory, Canada, and M. revoluta is also reported from Devon Island, Northwest Territories, Canada. These new localities extend a pattern of disjunct occurrences throughout the known range of both species, which further support the hypothesis of their relictual status. However, collections of A. assimile from coastal British Columbia and the Alexander Archipelago, Alaska, are indicative of strong oceanic affinities of North American populations of this species. Also, the arctic and alpine localities at which either A. assimile or M. revoluta might be expected to occur in the interior of Alaska and the Yukon are limited in number as both species invariably occur in association with siliceous substrates.

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