( 12 ) 
perfea form, with an eredl robufl Jlipes or 
ftem, one inch or more high, crowned with 
a round, convex, thick, flefhy, white head 
or hat, pileuSf with lamelU, or gills, under- 
neath, of a reddifli flelh colour; it is fup- 
pofed the flower and feed, if any, are con- 
cealed between the lamelU. When the 
'plant arrives at full growth, the head ex- 
panding almofl flat, forms a large flap, and 
falls on the ground over the fuppofed feed. 
This is a fugacious plant of quick growth 
and fliort duration, advancing firfl; like fmall 
white round knobs, which, increafing fafl in 
fize, and fometimes partly accomplilhing their 
growth within the furface, fuddenly make 
their eruption from the earth above half- 
grown, in the morning, where there was no 
fign of them the night before. But in the 
regular beds they arife varioufly, fpreading 
over the whole furface, fome as fmall as 
peafe. 
