010 THE AGARICACEAE OF MICHIGAN 



Form (B) is autumnal, rarely appearing before September, when 

 it is common throughout the State. September to November (earli- 

 est record August 25th 5 latest November 2). It seems to prefer 

 sandy soil, but also occurs in sandy-clay soil. Boudier says it seems 

 to be lacking in clay soil in France; be also gives spores slightly 

 larger. Found in white pine or hemlock forests, as well as in oak, 

 maple, etc. Both forms have a circumscissile volva, the upper part 

 of which is floccose in structure, tbe lower membranous. It is there- 

 fore intermediate between the first and second sections. The 

 European form is said to have a nauseous odor. It is poisonous like 

 A. phalloides. The spores of the yellow form are entirely spherical 

 and the apiculus is abrupt and very slender and short; in this it 

 differs from A. phalloides, which has spores with the spherical shape 

 but on the side of the apiculus becomes somewhat ovate-pointed, the 

 point ending in a rather stout apiculus; tbis diameter is therefore 

 a few microns longer, sometimes 10-12 micr. long to 9 broad. 



650. Amanita muscaria Fr. (Deadly Poisonous) 

 Syst. Myc, 1821. 



Illustrations: Gibson, Our Fdible Toadstools and Mushrooms, 



PI. IV (colored), 1895. 

 Farlow, Bull. No. 16, IT. S. Dept. Agr., PL 22, copied by Hard, 



Mush rooms, Fig. 13, 1908. 

 Atkinson, Mushrooms, Frontispiece (colored), also PI. 12-13, 



Figs. 52, 53 and 54, 1900. 

 Marshall, Mushroom Book, PI. Ill (colored), 1905. 

 Murrill, Mycologia, Vol. 5, PL 85 and PL 87, Fig. 3. 

 Mcllvaine, Amer. Mushrooms, PL IN, 1900. 



PILEUS S-20 cm. broad, at first ovate or hemispherical, then 

 broadly convex to plane, viscid when young and moist, yellow, soine- 

 limes orange or orange-red, rarely whitish, covered with numerous, 

 whitish or pale yellowish warts, margin at maturity slightly striate. 

 FLESB white, or yellowish under the separable pellicle. GILLS 

 reaching the stem, hut free or decurrent by a line, crowded, broadest 

 toward front, white. STEM 10-20 cm. high, equal or tapering up- 

 ward, loosely stuffed then hollow, ovate-bulbous below, white or 

 tinged yellow, with a white annulus above, the lower half floeeose- 

 scaly or somewhat lacerate, and near the bulb provided with /nom- 

 inal I concentric scales or rings, which are the remains of the broken 



