Summary Worley's map and species account do not seem to be concordant. The map does match the UBC herbarium database for this species. Volume 27 of the Flora of North America describes the habitat of A. aestivum as calcareous or non calcareous rock, sandstone walls, rock ledges, exposed moist crevices and wet areas from 10-3300 m.
From Natural History of Southeast Alaska
A list of all pages that have property "Summary" with value "Worley's map and species account do not seem to be concordant. The map does match the UBC herbarium database for this species.
Volume 27 of the Flora of North America describes the habitat of A. aestivum as calcareous or non calcareous rock, sandstone walls, rock ledges, exposed moist crevices and wet areas from 10-3300 m."
