Murrill: Dark-spored Agarics 



203 



Collected by F. S. Earle on May 19, 1901. The entire hymeno- 

 phore is white and practically glabrous. The stipe is much longer 

 than that of A. camp ester and the spores are quite different. 



3. Agaricus comtuliformis sp. nov. 



Pileus thin, slightly convex, at length expanded, 2.5-5 cm - 

 broad ; surface at first bright-yellow, nearly white at maturity, but 

 with yellowish or brownish stains, especially near the center ; mar- 

 gin becoming light-brown with age ; lamellae free, narrow, crowded, 

 cream-white, changing to light-pinkish-lilac, at length purplish- 

 brown ; spores broadly ellipsoid, smooth, sometimes obliquely apic- 

 ulate at the base, dark-purplish-brown under the microscope, about 

 5 x 3.5 fju; stipe slender, not bulbous but tapering slightly upward, 

 stringy or finally hollow within, nearly white but usually somewhat 

 tawny and with more or less fibrous scales below the annulus, 5-7.5 

 cm. long, about 6 mm. thick; annulus fibrous and tomentose below, 

 usually yellowish. 



Type locality : Auburn, Alabama. 



Habitat : On the ground in pine woods. 



Distribution : Known only from the type locality. 



Collected in quantity by F. S. Earle on July 29, 1899, and again 

 on August 2 of the same year. It is larger than A. comtulus, with 

 larger and darker spores, and the mature gills are darker. The 

 surface of the pileus is bright-yellow in young, fresh plants, al- 

 though much resembling that of A. comtulus in herbarium material. 



4. Agaricus solidipes Peck, Bull. Torrey Club 31 : 180. 1904 



Pileus fleshy, firm, convex, 2-7 cm. broad ; surface squamose or 

 rimose-squamose, white or whitish, involute on the margin; context 

 white, unchangeable, edible, with an agreeable, sweet taste ; lamellae 

 crowded, free, dull-pink changing to dull-sepia, finally brownish- 

 black; spores ellipsoid, 8-10 x 5-6/*; stipe very short, equal or 

 tapering upward and downward, glabrous, solid, white or whitish, 

 with a slight, white veil often adhering entirely to the margin of 

 the pileus, 2-4 cm. long, 6-10 mm. thick. 



Type locality : Denver, Colorado. 

 Habitat : In prairie pastures. 

 Distribution : Vicinity of Denver. 



Type collected by E. B. Sterling in June, 1902. Plants bearing 

 this name at Albany, collected by C. F. Baker at Claremont, Cali- 

 fornia, in 1909, are quite different from Sterling's plants. 



