areas directly adjacent to the river and ditch are inhabited 

 by Phalarls arundinacea (canary reedgrass) and Salix exigua 

 (willow) . The uplands are steep, dry, rocky slopes with 

 scattered Pinus ponderosa (ponderosa pine) and shrubs 

 including Artemesia cana (silver sagebrush) , Chrysothamnus 

 nauseosus (rabbitbrush) , Juniperus scopulorum (Rocky Mountain 

 juniper) , and Yucca glauca (Spanish bayonet) . Although weeds 

 are not presently a great problem at this site the following 

 were seen (mostly around the parking lot) : Arctium minus 

 (burdock) , Bromus inermis (smooth brome) , Centaurea maculosa 

 (spotted knapweed) , Cirsium arvense (Canada thistle) , 

 Cyanoglossum officinale (houndstoungue) , Euphorbia esula 

 (leafy spurge) , Glycyrrhiza lepidota (licorice) , Melilotus 

 alba and M. officinale (sweetclovers) , and Sonchus uliginosus 

 (sowthistle) . At least two of these, knapweed and spurge, are 

 extremely aggressive; steps should be taken to control them 

 before they get out of hand. Although this site contains a 

 large area of relatively pristine native habitat, the 

 likelihood of finding MPSSC is low; the only ones known from 

 Stillwater County are found in the alpine or in moist woods. 



Grant Marsh Fishing Access Site 



This is another very weedy site in bottomlands along the 

 Bighorn River. The vegetation consists of floodplain 

 woodlands, rank weedy meadows, and wetlands around sloughs. 

 The woodlands are dominated by cottonwoods {Populus deltoides) 

 and have a disturbed understory dominated by ragweed {Ambrosia 

 artemesifolia) , Canada thistle (Cirsium arvense) , licorice 

 {Glycyrrhiza lepidota) , and white sweetclover {Melilotus 

 alba) . The meadows are dominated by exotics and weedy natives 

 including goosefoot {Chenopodium sp.), field bindweed 

 (Convulvus airvensis) , intermediate wheatgrass {Elymus 

 hispidus) , foxtail barley {Uordeum jubatum) , marsh elder {Iva 

 xanthifolia) , kochia {Kochia scoparia) , prickly lettuce 

 {Lactuca seriola) , alfalfa {Medicago sativa) , sweetclover 

 {Melilotus alba) , tumble mustard {Sisymbrium loeselii) , and 

 mullein {Verbascum thapsus) . The wetlands are somewhat less 

 weedy (although sowthistle, Sonchus uliginosus , is well 

 established) and are dominated by Russian olive {Eleagnus 

 angustifolia) , rushes {Juncus spp.), curley dock {Rumex 

 crispus) , bull rushes {Scirpus spp.), goldenrod {Solidago 

 canadensis) , salt cedar {Tamarisk chinensis) , and cattails 

 {Typha latifolia) . It was thought that this was potential 

 habitat for Eupatorium maculatum and sensitive Carex species 

 but none were found. It is unlikely that these or any other 

 MPSSC inhabit these wetlands. This site needs a comprehensive 

 weed control strategy and reclamation to less objectionable 

 types of vegetation, but this will not be easily achieved. 



Grey Bear Fishing Access Site 



Vegetation at this site along the Yellowstone River 

 consists of woodlands with openings, small meadows and 



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