336 
Psyche 
[December 
Plate 2. Collage of CJ. S. Geological Survey 7 1/2 Minute Topographic 
Maps (Cathedral Peak, Cimarron, Curecanti Needle and X Lazy F Ranch), 
showing Black Mesa and environs. Compare with PI. 3 on the facing page 
to see the relationships between A. conspersa deme structure and phyto- 
topography. 
