Gastony’s Cliffbrake (Pellaea gastonyi) in Manitoba: new records and assessment of conservation status

Chris Friesen, Colin Murray


Gastony’s Cliffbrake (Pellaea gastonyi Windham) is a globally rare fern (Pteridaceae) that grows on limestone cliffs and ledges, including those associated with alvars. Until now, the only record in Manitoba was from a location just north of Fisher Branch. We report additional records and locations, one of which is over 250 km north of the initial collection. We also provide a conservation status assessment of this species in Manitoba that indicates that this species is rare in the province and is threatened in at least a portion of its range by habitat loss and degradation.


Gastony’s Cliffbrake; Pellaea gastonyi; Manitoba; limestone; alvar; rare species; fern; habitat loss

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