Rare Plant Field Guide

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Photo Copyright © 1999 by L. Barzee Asteraceae (Sunflower Family) Synonyms: Solidago ptarmicoides, Aster ptarmicoides Look Alikes: Differs from Solidago species in having larger inflorescences and white to pale yellow flowers rather than yellow ones. Distinguished from white flowered, linear-lanceolate leaved Aster species in having a prominent midrib on the phyllaries and at least some of the pappus bristles enlarged at the apex. Flowering/Fruiting Period: Flowers July-August. Habitat: Dry, open prairies or montane meadows; often on limestone bluffs and sandy sites. Elev. 7500-9300 ft. Photo Copyright © 1999 by L. Barzee Distribution: Saskatchewan east to New England, south to Colorado (El Paso, Larimer, Park and Teller Cos.). References: Great Plains Flora Association 1986; Rydberg 1906. Please send comments to: Colorado Natural Heritage Program 254 General Services Building, Colorado State University · Fort Collins, CO 80523 · (970) 491-2992