PLATE 94 
POWDERED RUELLIA CILIOSA, Pursh. 
1. Short, broad cystoliths from the rhizome. 1’. Long cystoliths from the 
root. 2 and 2’. Long, narrow, white-walled bast fibres. 3. Tracheal tissue 
from the xylem of the stem. 4. Root parenchyma. 5. Tracheal tissue from 
the xylem of the root. 6. Cortical parenchyma cells from the rhizome with 
short, broad cystoliths. 7 and 7’. Long, thick-walled sclerids from the root. 
8. Short, broad sclerids from the stem. 9. Pitted pith parenchyma from the 
stem with intercellular space. 10. Parenchyma of the root with sclerid and 
cystolith, longitudinal view. 
