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,'.' .tee fS- <br />. ~/ <br />,.` <br /> <br />~1 <br />(:nmmnn Nama <br />Forbs <br />THFI <br />GRSQ <br />OEC02 <br />LIPU <br />HEVI4* <br />PHHO <br />HASP2 <br />ASP ES <br />PEAN4 <br />PIOP* <br />DAPU4* <br />LYJU <br />GACOS <br />SPCO <br />OXSE <br />SONU <br />PSTE3 <br />RAC03 <br />SEMU4 <br />PLPA2 <br />ASM07 <br />AROR4 <br />Shrubs <br />Colorado greenthread <br />curlycup gumweed <br />cutleaf evening primrose <br />dotted gayfeather <br />hairy goldaster <br />Hoods phlox <br />ironplant goldenweed <br />narrowleaf poisonvetch <br />narrowleaf penstemon <br />plains bahia <br />purple prairieclover <br />rush skeletonplant <br />scarlet gaura <br />scarlet globemallow <br />silky crazyweed <br />silky sophora <br />slimflower scurfpea <br />upright prairie coneflower <br />variable senecio <br />wooly Indianwheat <br />wooly locoweed <br />wormwood <br />-3- <br />Scientific Name <br />Loamy Plains X16 <br />Thelesperma filifolum <br />Grindelia squarrosa (4) <br />Oenothera coronopifolia <br />Liatris punctata <br />Heterotheca villosa <br />Phlox hood ii <br />Haplopappus spinulosus <br />Astragalus pectinatus <br />Penstemon angustifolius <br />Picradeniopsis <br />oppositifolia <br />Dalea purpurea (2) <br />Lygodesmia juncea <br />Gaura coccinea <br />Sphaeralcea coccinea (3)' <br />Oxytropis sericea <br />sophora nuttalliana <br />Psoralea tenuiflora <br />Ratibida columnifera ' <br />senecio mutabilis <br />Plan[ago patagonica (2) <br />Astragalus mollissimus (2) <br />Artemisia dracunculus <br />Percent <br />T-1 <br />T-1 <br />T-1 <br />T-1 <br />T-1 <br />0-1 <br />T-1 <br />T-1 <br />T-1 <br />T-1 <br />T-1 <br />T-1 <br />T-1 <br />T-2 <br />T-1 <br />T-1 <br />T-1 <br />T-1 <br />T-1 <br />T-1 <br />T-1 <br />T-1 <br />XASA* broom snakeweed Xanthocephalum sarothrae 0-T <br />ATCA2 fourwing saltbush Atriplex canescens T-5 <br />OPPO plains pricklypear Opuntia polyacantha (4) T-1~ <br />CHNAN* rubber rabbitbrush Chrysothamnus nauseosus (6) 0-T <br />YUGL small soapweed Yucca glauca 0-1 <br />EREF spreading eriogonum Eriogonum effusum 0-T <br />OPIM* walking stick cholla Opuntia imbricata T-2 <br />CELA2* winterfat Ceratoides Janata T-5 <br />*Symbol not listed in National List of Scientific Plant Names. <br />c. If ecological retrogression is cattle-induced, desirable grasses <br />will decrease. However, if retrogression is sheep-induced, <br />desirable (orbs and shrubs may be reduced. Deterioration of <br />this site caused by overgrazing of cattle will decrease the per- <br />centage of grasses such as needleandthread, sideoats grama and <br />western wheatgrass. With the decrease of above mentioned plants <br />blue grama, galleta, sand dropseed will increase initially. <br /> <br />