Distributed by the Government of Canada Depository Services Program. Issued also in French under title: Mise à jour, évaluation et rapport de situation du COSEPAC sur l'aster rigide, Sericocarpus rigidus, au Canada. Written by Carrina Maslovat; overseen and edited by Erich Haber, co-chair, COSEWIC Vascular Plants Specialist Subcommittee. Cf. Production note. "Endangered, 2009".

Includes bibliographical references.

Species information -- Distribution -- Habitat -- Biology -- Population sizes and trends -- Limiting factors and threats -- Special significance of the species -- Existing protection or other status designations -- Technical summary .