No. 126. 
PYRETHRUM SAXATILE. 
Class. Order. 
SYNGENESIA POLYGAMIA SUPERFLUA. 
This is by some considered a variety of 
Pyrethrum Alpinum of Willdenow, (Chry- 
santhenum Alpinum of earlier authors;) it 
however appears to us to differ specifically. 
It isa native of the Alps of Switzerland, 
a perennial plant of very low growth, rarely 
exceeding two inches, and quite hardy with 
us, being cultivated in a small pot without 
any shelter. It may be increased by sepa- 
rating the rootsin tbe spring. Tbe blossoms 
are produced in the beginning of summer, 
continuing a considerable time. plant 
is well adapted for ornamenting a rock, 
