GRAZING AND FORAGE PRODUCTION ON NATIONAL FORESTS 



49 



Table 18. — Vegetative record of grazed plot No. 14 on Horseshoe Flat, 1921 



Species recorded : 



Androsace (Androsace puberculenta) . 

 Aplopappus (Aplopappus dementis) . 

 Aster (Aster frondeus). 

 Beardtongue (Pentstemon ryd~bergii) . 

 Buttercup {Ranunculus inamoenus) . 

 Chickweed (Alsine jamesiana) . 

 Collomia (Collomia linearis). 

 Dandelion {Leontodon taraxacum). 

 Douglas knotweed (Polygonum doug- 



lasii) . 

 Erigeron {Erigeron ursinus). 

 Gayophytum (Gayophytum ramosissi- 



mum ) . 

 Lamb's-quarters (Chenopodium album). 

 Letterman needle grass (Stipa letter- 



mani) . 

 Dow larkspur (Delphinium menziesii). 

 Meadow barley (Hordeum nodosum). 

 Meadow rue (Thalictrum occidentale) . 

 Mountain brome (Bromus polyanthus). 



Species recorded — Continued. 



Mountain dandelion (Agoseris pumila) . 

 Nodding blue grass (Poa reflexa). 

 Onion grass (Melica spectabilis) . 

 Ortbocarpus (OrtJiocarpus luteus) . 

 Pacbylopbus (Pachylophus caespitosus). 

 Pea vine (Lathy r us leucanthus) . 

 Plantain (Plantago tweedyi). 

 Potentilla (Potentilla nuttallii) . 

 Spiked trisetum (Trisetum spicatum). 

 Sweet sagebrush (Artemisia sp.). 

 Tansy mustard (Sophia incisa). 

 Tongue-leaf violet (Viola linguaefolia) . 

 Trout lily (Erythronium parviflorum) . 

 Viguiera (Viguiera multiflora) . 

 Violet wheat grass (Agropyron viola- 



ceum ) . 

 Wild geranium (Geranium viscosissi- 



mum). 

 Yarrow (Achillea lanulosa). 



SUMMARY RECORD OF PLANT COVER AND ITS FORAGE VALUE 



Number of species 34 



Density . 40 



Palatabilitv percentage : 



Cattle 29. 187 



Sheep 53.903 



Forage factor : 



Cattle 117 



Sheep^ .216 



Table 19. 



Vegetative record of protected plot No. 2 on Philadelphia Flat, 

 1915 and 1921 



Species recorded, 1915 : 



Beardtongue (Pentstemon rydbergii). 

 Dandelion (Leontodon taraxacum). 

 Douglas knotweed (Polygonum doug- 



lasiij. 

 Letterman needle grass (Stipa letter- 



manij. 

 Tansy mustard (Sophia incisa). 

 Yarrow (Achillea lanulosa). 

 Species recorded, 1921 : 



American vetch (Vicia americana). 

 Androsace (Androsace puberulenta). 

 Aster (Aster frondeus). 

 Beardtongue (Pentstemon rydbergii). 

 Buttercup (Ranunculus inamoenus). 

 Chickweed (Alsine jamesiana). 

 Collomia (Collomia linearis). 

 Dandelion (Leontodon taraxacum). 

 Douglas knotweed (Polygonum doug- 



lasii) . 



Species recorded, 1921 — Continued. 



False cymopterus (Pseudocymopterus 

 tidestromii). 



Lamb's-quarters (Chenopodium album) 



Letterman needle grass (Stipa letter- 

 man i). 



Ligusticum (Ligusticum filicinum). 



Low larkspur (Delphinium menziesii). 



Mountain dandelion (Agoseris pumila). 



Nodding blue grass (Poa reflexa). 



Pachylophus (Pachylophus caespitosus). 



Peppergrass (Lepidium ramosissimum). 



Plantain (Plantago tweedyi). 



Potentilla (Potentilla sp.). 



Tansy mustard (Sophia incisa). 



Tongue-leaf violet (Viola linguaefolia). 



Wild geranium (Geranium viscosissir 

 mum). 



Yarrow (Achillea lanulosa). 



SUMMARY OF CHANGES IN VEGETATION AND FORAGE VALUE OF COVER 





1915 



1921 



Per cent 

 increase 



or 



decrease 



(— ) from 



1915 to 



1921 





6 



.122 



38.07 

 74.31 



.046 

 .091 



24 

 .289 



37.58 

 76.26 



.109 

 .220 



300 





136.9 



Palatability percentage: 



Cattle ... - -- - -- 



-1.29 





2.62 



Forage factor: 



Cattle -- -- - -- -- -- --- 



137 





141.8 







