Rare Plant Field Guide

Table of Contents Home Introduction Acknowledgments Definitions Master Plant List USFS List BLM List Other Agencies Glossary References Plant Survey Form HELP! NDIS Home CNHP Home

Photo Copyright © 1999 by S. Spackman Rosaceae (Rose Family) Synonym: Potentilla effusa var. rupincola Look Alikes: Nearly identical in appearance to P. effusa which is densely to sparsely pubescent, and has silvery or grayish-green lower leaf surfaces. Flowering/Fruiting Period: Flowers mid-June-August. Habitat: Granitic outcrops or thin, gravelly granitic soils with west or north exposure. Often associated with ponderosa or limber pine. May occur with Aletes humilis. Elev. 6900-10,500 ft. Photo Copyright © 1999 by S. Spackman Distribution: Colorado endemic (Boulder and Clear Creek, Larimer and Park Cos.). References: Johnston 1980; O’Kane 1988; Weber 1976. Please send comments to: Colorado Natural Heritage Program 254 General Services Building, Colorado State University · Fort Collins, CO 80523 · (970) 491-2992