. Plant species of concern and plant associations of Powder River county, Montana . Plant communities; Endangered plants; Rare plants; Botany; Plant conservation. Elso rocky soils (8% to 35%) is the mapping unit. Soil textures range from silty clay to loam, and are frequently unifomi silt loam. The soil surface is often unifonii silt but may have a veneer or be embedded with pebbles and Figure 6. Habitat of Astragalus barrii The Little Powder River habitat is on tlie open plains while the Otter Creek habitat is in a pineland setting, but they otliei'wise have similar species composit
. Plant species of concern and plant associations of Powder River county, Montana . Plant communities; Endangered plants; Rare plants; Botany; Plant conservation. Elso rocky soils (8% to 35%) is the mapping unit. Soil textures range from silty clay to loam, and are frequently unifomi silt loam. The soil surface is often unifonii silt but may have a veneer or be embedded with pebbles and Figure 6. Habitat of Astragalus barrii The Little Powder River habitat is on tlie open plains while the Otter Creek habitat is in a pineland setting, but they otliei'wise have similar species composition. The sparse vegetation has many of the same species present from place to place even if the relative cover of any one of tlieni is variable. The most common shiiib is usually Wyoming big sagebrush (Artemisia tridentata uyomittge/isis). The most common grass that we noted on BLM lands is western wheatgrass (Pascopynmt swithii) or else tliickspike wheatgiass (Elyitius lauceolains) on level terrain, but neitlier is mentioned among the associated species on Custer National Forest (Schassberger 1988,1990). Otiier directly- associated species typically include leafy musineon. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Heidel, Bonnie L; Jean, Catherine; Crispin, Susan; Montana. Bureau of Land Management; Montana Natural Heritage Program. Helena, Mont. : Montana Natural Heritage Program
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Keywords: ., bhl, bookcollectionamericana, bookleafnumber55, booksubjectbotany
