DEVELOPMENT OF EXOGENOUS SPECIES OF AGARICS 
51 
18. Beitrage zur Entwickelungsgeschichte und Anatomie der Agaricineen. 
Bot. Zeit. 18: 389-395, 397-404. pis. 13, 14. i860. 
19. Icones Analyticae Fungorum, Abbildungen und Beschreibungen von 
Pilzen mit besonderer Riicksicht auf Anatomie und Entwickelungsgeschichte, 
pp. 105. pis. 24. 1861. 
20. Sawyer, W. H. The Development of Some Species of Pholiota. Bot. Gaz. 
64: 206-229, pis. 16-20. 1917- 
21. Zeller, S. M. The Development of Stropharia ambigua. Mycologia 6: 139-145. 
pis. 124, 125. 1914. 
DESCRIPTION OF PLATES I-VII 
Figures 19, 22, 23, 24, 27, 43, 44, 45, 47, 52, 66, 72, 75, 99, lOO, 121, 135, 136, 
138 and 139 were taken with a Bausch and Lomb compound microscope, fitted with 
a Zeiss 4 mm. ocular and a 3 mm. objective. For figs. 46 and 1 10 a combination of 
ocular 6 and objective 3, for fig. 82 a combination of a 4 mm. ocular and 16 mm. 
objective, and for fig. 98 an 18 mm. ocular and 16 mm. objective were used. The 
other figures were photographed by means of an extension camera and Zeiss lenses, 
figs. 64 and 65 with a 35 mm. objective, figs. 96 and 97 with a 50 mm. objective, and 
the others by means of a 16 mm. Spencer Lens Co, photographic objective. 
Plate I 
Myce?ia suhalcalina (figs. 1-24) 
Fig. I. X 36 diameters. Two young fruit bodies. The larger, by the epinastic 
growth of the hyphae at the apex, is becoming differentiated into stem and pileus 
primordia. 
Fig. 2. X 36 diam, A slightly older stage, in which the pileus and stem 
primordia are well differentiated. 
Figs, 3, 4, 5. X 36 diam. Median and two tangential sections of a fruit body, 
showing the primordium of the hymenophore. 
Figs. 6 and 7. X 36 diam. Median and tangential sections of a fruit body 
with the palisade layer developed. The crowding of the palisade elements causes 
the subadjacent tissue to become very loose. 
Figs, 8-12. X 36 diam. A series of sections from a fruit body, in which the 
gill salients are just beginning to form. 
Figs, 13-18. X 36 diam. A slightly older series, showing the development of 
the gills. 
Fig. 19. X 255 diam. Enlargement of the margin of the section of fig. 2. 
Figs. 20 and 21. X 36 diam. Median and tangential sections from a nearly 
mature fruit body. 
Fig. 22. X 255 diam. Enlargement of the section of fig. 5, showing the 
hymenophore primordium. 
Fig. 23. X 255 diam. Enlargement of the section of fig. 7, showing the 
palisade layer. 
Fig. 24. X 234 diam. Enlargement of the section of fig. 16, showing young 
gills. 
