20 



RANGE TlsrVESTIGATIONR IK ARIZONA, 



was believed the maximum jield for the season would be secured. It 

 was impossible, of course, to select a time when the maximum for each 

 plant could be obtained on account of the difference in the date of 

 maturity and the difference in the resistance to the drought of late 



spring. 



Tuhular statement of 'plot measurements. 



[Each plot contains 21 square feet.] 



Name of plant. 



Plot A. 



Esch.scholtzia mexicana . 



Atriplex elegans 



Gilia floeco.sa 



Lotus humilis 



Pectocarya linearis. . ..... 



Sphffirostigma chamseneri- 

 oides. 



Lepidinm montanum 



Filago falif< irnica 



Triodia pulchella 



Phacelia arizonlca 



Lotus humistratus 



Caucalis microoarpa 



Plot B. 



Monolepis nuttalliana . . . 



Atriplex elegans 



Onagra trichocaly.x: 



Num- 

 hvT of 

 plants, 



Plot C. 



Filago oalifornica 



Lf>tus humistratus 



Sphferostigma chamseneri- 

 oides. 



Gilia floceosa 



Eriogonum ahertianmn.. 



Plot D. 



Aristida americana 



Lupinus Icptophyllus 



Lotus humistratus 



Plot E. 



Lotus humistratus. . . 

 Pectocarya linearis. . 

 Astragalus nuttallii . 



Plantago ignota 



Gilia floceosa 



Plagiohothrys sp — 



Plot F. 



Plantag<j ignota 



Lotus humistratus 



Plagiohothrys arizonicus . . 



Pectocarya linearis 



Orthocarpus purjairascens 

 palmeri. 



Gilia floceosa 



Height 



of 

 plants. 



4 

 9 

 9 

 1 



10 

 4 



5 

 1 

 1 

 5 

 4 

 9 



2 

 1 

 1 



1 

 4 



24 



3 



•JO 



1S3 



no 



7 

 26 



8 

 71 



595 

 1S9 



35 

 374 



37 



38 



Inches. 

 5 

 3 



4 

 2 

 2 

 5 



7 

 1 

 2 

 4 



3 to 4 



9i 



2 to 4 



4 

 5 



3 to 4 



Ito 



Ito 



Condition of 

 plants. 



In hloom 



Very young . . 

 Under bloom . 



In fruit 



do 



In bloom 



....do.... 



do.... 



do.... 



In fruit . . . 

 In bloom . 

 do.... 



2 to 31 



In fruit 



Very young . . . 

 In bloom 



Weight. 



Orains. 

 26 



70 



20 



2 



104 

 2 



80 



3 



2 



28 



21 



6 



1,631 

 94 

 10 



In bloom . 

 ....do..., 

 ....do... 



Under bloom . 

 In bloom 



Under bloom . 

 Early bloom.. 

 In bloom 



In fruit 



....do 



In bloom 



Early bloom. 



do 



In fruit 



Early bloom. 

 Full bloom . . 

 Late bloom . . 



In fruit 



In bloom 



Early bloom. 



Condition of plot. 



A broad, nearly level area 

 from wiiich some surface 

 soil has Ijcen removed by 

 erosion. Sparsely covered 

 with shrubbery. 



1 

 2 

 4 



2 

 10 



297 

 56 

 03 



655 



on 



11 



53 



11 



409 



245 

 126 

 147 

 318 

 93 



60 



A broad, shallow depression, 

 from which nearly all brush 

 has been cut and the sur- 

 face soil removed by ero- 

 sion. 



On a stony ridge in an area 

 cut witli steep, .shallow ra- 

 vines. 



On the southern exposure of 

 a stony knoll containing an 

 unusually good growtli of 

 Aristida." Besides tlie list 

 there are 223 seedling Erio- 

 carpiim (/racilis less than 1 

 inch high. 



A gently .sloping, grassy area 

 at the upper edge of the 

 heavier mesquite brush. 

 Besides the plants listed 

 there are two small seed- 

 lings of Oa'rtneria tcnuifu- 

 lia, and ten plants of lioit- 

 telona rothrockii beginning 

 to grow. 



Verysimilar to E. No brush 

 excepting an occasional 

 mesquite from 2 to 3 feet 

 in heiglit. Tliereisconsid- 

 erable old grass of Bimte- 

 loiia rotltrockii, B. ariMi- 

 doidcs, and Aristida ameri- 

 cana from last season. 



