Rare Plant Field Guide

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Photo Copyright © 1999 by S. Spackman Loasaceae (Loasa Family) Synonym: Mentzelia chrysantha Look Alikes: N. nuda has pale yellow flowers that bloom in June, and larger fruits. Flowering/Fruiting Period: July-early September/late August-early September. Flowers open in the evening. Habitat: Barren slopes of limestone, shale, or clay. Elev. 5120-5700 ft. Photo Copyright © 1999 by B. Jennings Distribution: Colorado endemic. Fremont and Pueblo Cos., in the Arkan-sas River Valley between Canon City and Pueblo. References: Spackman and Floyd 1996; Weber and Wittmann 1992. Please send comments to: Colorado Natural Heritage Program 254 General Services Building, Colorado State University · Fort Collins, CO 80523 · (970) 491-2992