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 B. Jennings Loasaceae (Loasa Family) Synonym: Mentzelia densa Look Alikes: Distinguished from other Nuttallia species by its marcescent stems and tumbleweed growth form. Flowering/Fruiting Period: July-early August/September. Habitat: Washes, naturally disturbed sites, and steep rocky slopes. On precambrian granodiorite, gneiss, gravel, and scree. Dry open sites, often with pinyon-juniper, sagebrush, or mountain mahogany. Elev. 5800-7200 ft. Photo Copyright © 1999 by by S. Spackman Distribution: Colorado endemic. Fremont Co., Arkansas River Canyon. References: Coles 1990; O’Kane 1988. Please send comments to: Colorado Natural Heritage Program 254 General Services Building, Colorado State University · Fort Collins, CO 80523 · (970) 491-2992