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PLATE XXII. LETTER XXIV. 
MONADELPHIA. 
Fig. 1. Althaea officinalis. Marsh Mallow, 
a The flower, showing the five petals united 
at bottom, obcordate or inversely 
heart-shaped, and slightly emargi- 
nated or end-nicked. In the centre 
is the column of stamens, with the 
pistils in the middle of them. 
b The column of stamens and pistils re¬ 
moved from the corolla, and showing 
the rudiment of the fruit underneath. 
c The pistil separate. 
d The calyx, exhibiting the nine divisions 
of the outer calyx, which is one of 
the principal geueric characters. 
Fig. 2. Malva sylvestris. Common Mallow, 
a The flower as before. The petals nar¬ 
row, heart-shaped, and much more 
deeply end-nicked. 
b c The column of stamens, and pistil se¬ 
rf The fruit, with the double calyx; the 
outer very narrow, the clefts of the 
