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PLATE XVIII. LETTER XXI. 
ICOSANDRIA. 
, / 
Fig. 1. Myrtus communis. Common Myrtle. 
a The corolla. 
b The fruit or berry. 
c A single flower without the corolla, show¬ 
ing the stamens proceeding from the 
calyx. 
Fig. 2. Pyrus Cydonia. The Quince. 
