. Plant species of concern and plant associations of Powder River county, Montana . Figure 4. Photograph of Astragalus Irvaliuus (note white flowers) Figure 5. Photograph of Astragalus spathulatus (note stalked flowers) This species is restricted to uppei-and mid-slope topographic positions and does not occupy outwash or eroded gullies below die outcrops. It is most commonly found on slopes widi noitliem and eastern aspects and does not occur on steep soutli- facing slopes with their salt-affected vegetation. In otlier words, its habitat represents a small subset of outcrop settings and a sma
. Plant species of concern and plant associations of Powder River county, Montana . Figure 4. Photograph of Astragalus Irvaliuus (note white flowers) Figure 5. Photograph of Astragalus spathulatus (note stalked flowers) This species is restricted to uppei-and mid-slope topographic positions and does not occupy outwash or eroded gullies below die outcrops. It is most commonly found on slopes widi noitliem and eastern aspects and does not occur on steep soutli- facing slopes with their salt-affected vegetation. In otlier words, its habitat represents a small subset of outcrop settings and a small subset of tlie thin silty ecological site. In Powder River County, Bair's Milkvetch is found, almost witliout exception, on die Midway- Elso rocky soils on 35% to 70% slope (Parker et al. 1971). Appendix C-2
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