46 



BULLETIN 1405, U. S. DEPARTMENT OF AGRICULTURE 



Tables 19 and 20 represent the vegetation on plots protected and 

 grazed on Philadelphia Flat, where, because of the badly depleted 

 condition and the heavy packing of the soil brought about by many 

 years of excessively close and early cropping, the vegetation was 

 low in its ecological development. (PI. V, fig. 2.) In 1915 the 

 protected plot contained only one species of grass, and by 1921 no 

 other grass species had come in. The density and forage value of 

 the protected and grazed plots were practically identical by 1921. 



Table 21, giving the plant record of protected plot No. 3, located 

 in Seeley Creek (PI. VI), shows a slower recovery than the other 

 plots. Because of the serious overgrazing that prevailed for many 

 years on the lands which the plot typifies, vegetation was of a 

 transitory type and consisted largely of annuals and short-lived 

 perennials. At the stage of plant development reached in 1921 

 the area was in a receptive condition for the invasion of desirable 

 long-lived perennial grasses, which, because of their higher palat- 

 ability, would increase markedly the grazing capacity of the lands. 



By referring to the average palatabilities and forage factors on 

 the plots, it will be noted that range in such a serious degree of 

 depletion is generally more valuable for sheep than for cattle. This 

 is largely because the " weeds," which are more readily grazed by 

 sheep, are most abundant. 



Table 13. — PalataMHty list of plants that occur on the natural reseeding plots, 



Manti National Forest 



Scientific name 



Per cent 

 palatable 

 for cattle 



Per cent 

 palatable 

 for sheep 



Scientific name 



Per cent 

 palatable 

 for cattle 



Per cent 

 palatable 

 for sheep 



Grasses and grasslike plants: 

 Agropyron dasystach- 

 yum... ..... 



85 

 95 

 95 

 95 



60 

 70 

 40 

 70 

 75 

 95 

 75 

 90 

 80 

 80 



50 



80 



30 







10 



10 



10 







25 























70 

 85 

 95 

 85 



40 

 50 

 25 

 50 

 60 

 60 

 90 

 80 

 65 

 65 



90 



95 



60 



10 



20 



40 



30 







80 



20 



10 











20 



Weeds— Continued. 



Gayophytum ramosissi- 



10 

 



40 

 50 

 30 

 70 

 

 



80 



60 











20 

 20 

 

 10 

 15 

 15 

 

 



10 

 10 

 10 

 10 

 

 10 

 90 

 20 

 15 



30 



Agropyron violaceum... 



Gentiana sp . 







Bromus inermis.. . 



Geranium viscosissimum . 



70 



Bromus polyanthus 



70 



Bromus tectorum (early 



Lathyrus leucanthus 



Leontodon taraxacum 



Lepidium ramosissimum. 

 Lesquerella kingii 



60 

 90 





10 



Hordeum nodosum 





 95 



Melica spectabilis 



Monolepis nuttalliana 



Orthocarpus luteus 



80 

 



Phleum pratense._ 



20 



Poa reflexa _ .. . . 



Pachylophus caespitosus.. 

 Pentstemon rydbergii 



60 



Stipa lettermani ... 



50 



Trisetum spicatum 



10 



Weeds: 



Achillea lanulosa .. . . 



Polemonium molle 



Polygonum aviculare 



Polygonum douglasii 



40 

 60 



Agoseris pumila ... 



60 



Alsine jamesiana .._._ 



20 



Androsace puberulenta... 



Aplopappus dementis 



Artemisia sp. 



Potentilla nuttallii 



Pseudocymopterus tides- 



20 

 30 





Ranunculus inamoenus.. 



Rumex mexicanus 



Sophia incisa .. __ 



30 



Chaenactis sp 



Chenopodium album ... 



40 



40 



Collomia linearis. 



Thalictrum occidental. .. 



40 



Delphinium menziesii 



30 



Draba sp 





90 



Erigeron ursinus .. 



Viguiera multiflora 



Viola linguaefolia .. 



50 



Erythronium parvi- 



- 50 













