Resources
- Flora of Colorado, 2nd Edition, Botanical Research Institute of Texas
- Pollination and Floral Ecology, Princeton University Press
- Botanic Gardens Conservation International
- Boulder County Nature Association
- Canotia, published by the Arizona State University Vascular Plant Herbarium
- Center for Plant Conservation
- Colorado Native Plant Society (CoNPS)
- Colorado Natural Heritage Program
- Colorado Weed Management Association
- Lady Bird Johnson Wildflower Center
- Lookout Mountain Nature Center
- NatureServe
- Rocky Mountain Biological Laboratory
- Rocky Mountain Wild
- Society for Ecological Restoration
- The Botanical Society of America
- USDA Forest Service: Celebrating Wildflowers