184 BOTANICAL GAZETTE [SEPTEMBER 
which later are deciduous. These always break off upon removal 
from the soil and do not appear in the figure. 
Rumex hymenosepalus.—This plant is common in the more 
mesophytic places on the mesa, especially in broad, shallow arroyos. 
The rosette of broad, thick leaves appears very early in the spring 
and is soon followed by a spike of flowers. The root is very large 
