Entry for Carex petricosa Dewey var. petricosa [family CYPERACEAE]
Entry From
Flora of North America, Vol 23,
Discussion
As defined here, Carex petricosa var. petricosa includes the Asian species C. macrogyna Turczaninow ex Steudel. T. V. Egorova (1999) stated that C. macrogyna has a staminate terminal spike, while C. petricosa var. petricosa has an androgynous terminal spike. In North America, C. petricosa var. petricosa has the terminal spike staminate or androgynous.
A report of the Asian species Carex stenocarpa Turczaninow ex V. I. Kreczetowicz from western Alaska is referable to this taxon.