Stenotus (plant)
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- Canyons of the Ancients National Monument Plant List by Family
- Status Report on Penstemon Acaulis (Stemless Beardtongue) and Penstemon Yampaensis (Yampa Beardtongue) in Colorado, Utah and Wyoming
- Glide Wildflower Show Locates the Flowers Recent Generic Changes in the Asteraceae: What's in Store for the Oregon Flora Proje
- Italian Peaks Important Plant Area (IPA)
- Annotated Checklist of Vascular Flora, Arches National Park
- Colorado Native Plant Society "
- Plant List for the Monte Cristo Area
- KALMIOPSIS Journal of the Native Plant Society of Oregon
- American Penstemon Society/Utah Native Plant Society Annual
- Community Effects and Plant Associations of Two Sub-Alpine Castilleja Species in the White Mountains, California
- Rare Plant Survey of BLM Lands Gateway, Colorado
- July 2013 (Volume 36 Number 4)
- Plants of Chuska Mts
- Measuring Plant Diversity in the Tall Threetip Sagebrush Steppe: Influence of Previous Grazing Management Practices
- American Penstemon Society Newsletter, Vol 4, #1
- Mountain Plants of Northeastern Utah
- Vascular Plants of the Hanford Site
- PC22 Doc. 22.5