Nov., 1922] LEVINE — LAMELLAE IN AGARICUS CAMPESTRIS 
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stipe and a pilear region with no true lamellae forming. Ocular 3, objective 3, bellows 
20 cm. 
Fig. 89. An enlargement of a portion of the pileus shown in figure 88, showing a 
smooth hymenial surface. Ocular 3, objective 6, bellows 20 cm. 
Fig. 90. Longitudinal tangential section of a similar button, showing a smooth 
hymenial surface with some of the fundamental tissue hyphae of the stipe continuous with 
the hyphae of the pileus. Ocular 3, objective 6, bellows 20 cm. 
Figs. 94, 95. Longitudinal tangential (fig. 94) and median (fig. 95) sections of a 
young button of C. atramentarius, showing the trama of the young gills continuous with 
the fundamental tissue of the stipe below. Ocular i, objective 3, bellows 20 cm. 
