1907] 



CA LD WELL'-MICRO C YCA S CA LOCO MA 



119 



The specimens observed were not confined to any particular 

 exposure; the one shown in -jig. j is facing south; those in ^gs. i, 2, 

 and 4 are facing north; while those in figs. 5 and 6 face west. In 

 so far as could be determined, the plants are closely limited in elevation, 

 the level showing them to be at essentially the same elevation though 



^ 

 ^ 



^ 



Fig. I - 



this vicinity. 



abo 



no other plants in 



they vary greatly in their distances from the tops of the mountains 

 upon which they grow. They were found growing on limestone, in 

 places almost devoid of soil (fig. 2), in rocky soil {fig. j), and in clay 

 {figs. 1,4-6,^). 



The roots show considerable ability to adjust themselves- In 

 clay they sink deep into the soil, the stem and root system, in the case 



