CONTRIBUTIONS TO WESTERN BOTANY NO. IS 



among the bushes. A new shrub, Amorpha, grew along with Eyserihardtla. 



The Cosmos-like Bidens Bigelovii was frequent in the shade. l.i i< 

 angustifolia bushes were seen now and then. Zinnia pumila was frequent 

 c laipatorium i'MC.rnatum grew hi 

 2 rubber plant, Guayule, was found 

 now and then on the plain. There were a few goldenrods and asters. 

 Brickellia Rusbyi occurred now and then, a shrub. Gymnolomia multi- 

 flora was frequent. An n , . ^ ,,I , t , I ,;,-,. , ■ , . , ; ,, <\ , , 

 Another puzzling plant th n I ,.': I -. . d. !- h:;e a sunflower was lithoida 

 Thurberi. 



to the lower levels o \l\ in the canon/ |h [ h r o> \ up the, mn - 



tain the less interesting the flora bee m ' ' i . . . 



was very great, and it' was clearly Mexican. 



It was my intention to go to the top of this range before I left the 

 region, after I had gone over the n [ , ulled o I 



intending to go up the second canon as far as possible with my car an.: 

 then camp and go afoot from there. Hi It' no , . » 1 ., . (> ck to {! 

 first big canon south of the station. . ■ , r and the lower 



mountain flora, but it v - ;i ven hard trip to make. So I pulled out in 

 the morning and cir,. <. towai I Pawi, expecting to find some road cutting 

 off, but there was only one going to the first canon. So I went to Pa'wi 

 and there war informed that road \ t through the brush in that direc- 

 tion. So I explored and finally, afier trying two, I took one that led me 

 far out toward - h ;] ie brush. On the way I got several 



interesting species. Then the road, after cutting across an impossible wash, 

 was turned north and finally merged in the road on which I came out in 

 the morning. So I decided not to waste any more time, and struck 0"t for 

 Sells and Tucson, and on the way was drenched by another terrific rain- 

 fall. I spent a day at Tuc.-in r,;> irinc a -pring and drying out. Then 



Tombstone. On the way the Yuccas were much in evidence, the tree-like 

 « ' i i yl the lower macrocarpa. The latter was manifestly different from 

 * r Nl ' ^ 1T1 t! ; ? ii ie thn i ds nc ir the b ise of the leaves, and in the 

 variation in the thickness which was verging toward Schottii, but the dif- 

 ' ' 1( \' u ]t " l "• ' " " ^ - not as marked as one would wish. On 



the higher mesas I found a Juniperus that was not California nor Utah- 

 en Ms, for the bark was more that of Virginiana except that of the twigs 

 V :i, ' ,: . •"' i " 1 n,)t "os.-cracked or reddish. I had to assume that this was 

 ! '" :..<"t.iii,. I knew it could not be pachyphloea. As I approached 

 Benson there was muc.i less shrubbery and more grass, and the region was 

 tar more praine-like than westward, in fact it was a great prairie. The 

 presence of Bouteloua tnfida and apparently oligostachya was a contribut- 

 ing factor At this place there came in a Lepidium Thurberi which was 

 ^w marked white flowers. By the roadside was 



;rL ' nmqurt«M S mienatherum pentachaetum, the Mexi- 



can Fhivena rep nda, Anfl.ro i trifid This is what Gray calls the var. 



