48 



BULLETIN 1405., U. S. DEPARTMENT OF AGRICULTURE 



Table 16. — Vegetative record of grazed plot Xo. 13 in Bear Creek Canyon, 1921 



Species recorded : 



American vetch (Vicia americana) . 

 Androsace (Androsace puberulenta) . 

 Dandelion (Leontodon taraxacum). 

 Douglas knotweed (Polygonum doug- 



lasii) . 

 False cymopterus (Pseudo cymopterus 



tidestromii) . 

 Knotweed (Polygonum aviculare) . 

 Lamb's-quarter (Chenopodium album). 

 Lettuce (Lactuca scariola). 

 Meadow barley (Hordeum nodosum). 



Species recorded — Continued. 



Mexican dock (Rumex mexicanus) . 

 Monolepis (Monolepis nuttalliana). 

 Pachylophus (Pachylophus caespitosus) . 

 Peppergrass (Lepidium ramosissimum) . 

 Potentilla (Potentilla sp.). 

 Small wheat grass (Agropyron dasy- 



stachyum). 

 Tansy mustard (Sophia incisa) . 

 Violet wheat grass (Agropyron viola- 



ceum). 

 Yarrow (Achillea lanulosa). 



SUMMARY RECORD OF PLANT COVER AND ITS FORAGE VALUE 



Number of species 18 



Density . 158 



Palatability percentage : 



Cattle 40. 035 



Sheep 80. 150 



Forage factors : 



Cattle . 063 



Sheep- .127 



Table 17. — Vegetative record of protected plot No. 1 on Horseshoe Flat, 1915 



and 1921 



Species recorded, 1915 : 



Beardtongue (Pentstemon rydbergii). 

 Dandelion (Leontodon taraxacum). 

 Letterman needle grass (Stipa letter- 



mani). 

 Meadow rue (Thalictrum occidentale). 

 Mountain brome (Bromus polyanthus). 

 Spiked trisetum (Trisetum spicatum). 

 Sweet sagebrush (Artemisia sp.). 

 Violet wheat grass (Agropyron viola- 



ceum). 

 Yarrow (Achillea lanulosa). 

 Species recorded, 1921 : 



Aster (Aster frondeus). 

 Beardtongue (Pentstemon rydbergii). 

 Buttercup (Ranunculus inamoenus). 

 Chickweed (Alsine jamesiana). 

 Collomia (Collomia linearis). 

 Dandelion (Leontodon taraxacum). 

 Douglas knotweed (Polygonum doug- 



lasii). 

 False Solomon's seal (Vagnera stel- 



lata). 

 Gentian (Gentiana spj. 

 Lamb's-quarters (Chenopodium album). 

 Letterman needle grass (Stipa letter- 



mani). 



Species recorded, 1921 — Continued. 



Low larkspur (Delphinium menziesii). 

 Meadow barley (Hordeum nodosum). 

 Meadow rue (Thalictrum occidentale). 

 Mountain brome (Bromus polyanthus). 

 Mountain dandelion (Agoscris pumila). 

 Nodding blue grass (Poa reflexa). 

 Onion grass (Melica spectabilis). 

 Orthocarpus (Orthocarpus luteus). 

 Pea vine (Lathyrus leucanthus). 

 Plantain (Plantago tweedyi). 

 Potentilla (Potentilla nuttallii). 

 Rush (Juncus spj. 

 Skunk weed (Polemonium molle). 

 Spiked trisetum (Trisetum spicatum). 

 Tansy mustard (Sophia incisa). 

 Sweet sagebrush (Artemisia sp.). 

 Tongue-leaf violet (Viola linguwfolia). 

 Viguiera (Viguiera mtiltiflora). 

 Violet wheat grass (Agropyron vio- 



laceum). 

 Wild geranium (Geranium viscosissi- 



mum). 

 Yarrow (Achillea lanulosa). 



SUMMARY RECORD OF PLANT COVER AND ITS FORAGE VALUE 





1915 



1921 



Per cent 



increase 



of J 921 



over 1915 



Number of species ... 



9 



0.32 

 1.45 



37. 733 

 60. 040 



.1698 

 . 2702 



255. 55 







Palatability percentage: 

 Cattle. 







Sheep. . . . ... 







Forage factor: 



Cattle 







Sheep. ... __ _ _ . . ._ . ... 













1 The density in 1915 was so recorded as not to be comparable with that noted in 1921, and hence direct 

 comparisons in the matter of the forage factor can not be made. 



