DESCRIPTION OF PLATE XX 
TWO COMMON PUFF-BALLS 
Fig. i. —Cortex or outer skin of Lycoperdon echinatum, enlarged four 
times, showing the long curved spines arranged in bundles. The tips 
in each bundle are gathered together, and form more or less of a point; 
the spines are separate at the base, and are surrounded by a tessellated 
group of brown warts. 
Fig. 2,—Cortex of Lycoperdongemmatum, enlarged four times, showing 
the peculiar arrangement of the consolidated warts. 
Fig. 3.— Lycoperdon gemmatum, natural size, showing the soldered warts. 
Fig. 4.— Lycoperdon echinatum , natural size, showing the crowded 
spines. (All after Lloyd.) 
