24.0 POPULAR FIELD BOTANY. 
DIADELPHIA. DECANDRIA. 
CALYCIFLOR&. FABACE. 
ONONIS. (Rest Harrow.) 
Generic Character. Calyx five-cleft, the segments long and 
narrow. Standard large, and striped. Pod swollen, few seeds. 
ONoNIS ARVENSIS. Common Rest Harrow. A pretty 
papilionacious plant with pink blossoms, occasionally found 
white. It is a very variable plant, sometimes growing erect, 
at others procumbent ; sometimes with long sharp spines, 
and other specimens with scarcely any. I believe these 
varieties depend on the soil being more or less rich, the 
spiny kind growing in the wildest places. The leaves are 
divided in three. The spines, procumbent stem, and pink 
butterfly-shaped flowers make this plant easily known. 
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DIADELPHIA. DECANDRIA. 
CALYCIFLORZ. FABACEZ. 
ANTHYLLIS. (Kipney Vercu.) 
Generic Character. Calyx inflated, silky, and five-toothed. 
Petals nearly equal in length. Seed-vessel oval, having from one 
to three seeds, enclosed in a permanent calyx. 
