Part 1, 1914] AGARICACBAE 71 



7. Venenarius umbrinidiscus Murrill, Mycologia 4: 242. 1912. 



Amanita umbrinidisca Murrill, Mycologia 4: 262. 1912. 



Pileus fleshy, drying very thin, convex to expanded, at length depressed, umbonate, 

 solitary, reaching 10 cm. broad; surface moist, glabrous, with large, irregular, adherent patches 

 of the white volva, melleous, fading to stramineous on the conspicuously long-striate margin, 

 the umbo yellow in young plants, becoming umbrinous; lamellae free, broad, not crowded, 

 white; spores large, subglobose, smooth, hyaline, 7-9 m; stipe white or slightly yellowish, 

 tapering upward, 12 cm. long, 1-2 cm. thick; annulus ample, white, persistent, fixed above the 

 center of the stipe; volva rather short, white, tough, 3 cm. broad, with subentire free limb. 



Type locality: Seattle, Washington. 

 Habitat: On the ground in a fir forest. 

 Distribution: Washington. 



8. Venenarius virginianus Murrill, sp. nov. 



Pileus convex to plane, small, thin, solitary to gregarious, 2-2.5 cm. broad; surface moist 

 to viscid, fuliginous, glabrous, margin white, long-striate; context thin, white, unchanging; 

 lamellae free, white, unchanging, subdistant; spores subglobose to ovoid, smooth, hyaline, 

 10X8.5 /x; stipe cylindric and equal above, somewhat bulbous at the base, smooth, white, 

 glabrous, 4-5 cm. long, 5 mm. thick; annulus median, white, usually persistent; volva rather 

 large and distinct, white, adnate to the base of the stipe and forming a conspicuous cup. 



Type collected on a moist, gravelly bank in oak woods near Mountain Lake, Virginia, 1300 m. 

 elevation, July 8-14, 1909, W. A. Murrill 28. 



Distribution: Mountain Lake, Virginia. 



9. Venenarius Peckianus (Kauflm.) Murrill. 



A manita Peckian a KaufFm.; Peck, Mycologia 5: 67. 1913. 



Pileus at first ovoid, becoming broadly convex or nearly plane, 5-9 cm. broad; surface 

 glabrous at first becoming fibrillose or somewhat scurfy with minute, adnate, pinkish or cream- 

 colored squamules, white, not striate; margin at first incurved and bordered by the thickish 

 union of the universal and partial veil, at length crenate-fringed or lacerate-appendiculate ; 

 context firm, thickish, white; lamellae free, reaching the stipe, moderately broad, much broader 

 in front, subellipsoid, pure- white, flocculose on the edges; spores oblong, obtuse, 12-16X5-7 y.; 

 stipe stout, tapering upward, stuffed or hollow, bulbous, 5-9 cm. long, 1—2 cm. thick; volva 

 thick, firm, loose, margined with ovate lobes, the flesh often pinkish or salmon-colored, espe- 

 cially toward the base; veil very thin, evanescent, not forming a persistent annulus. 



Type locality: New Richmond, Michigan. 

 Habitat: Sandy soil under white pine trees. 

 Distribution: Known only from the type locality. 



10. Venenarius calyptratoides (Peck) Murrill, Mycologia 4: 241. 



1912. 



Amanita calyptratoides Peck, Bull. Torrey Club 36: 329. June, 1909. 

 Amanita calyptroderma Atkinson & Ballen, Ann. Myc. 7: 365. August, 1909. 



Pileus fleshy, convex to nearly plane, 4-22 cm. broad, covered in the center by a single 

 large irregular fragment or by small fragments of the volva; surface grayish-brown or lead- 

 colored, sometimes ochraceous or cream-colored, margin striate; context white, of mild flavor; 

 lamellae adnexed, sinuate, unequal, subcrowded, white or cremeous; spores broadly ellipsoid, 

 smooth, hyaline, often uninucleate, usually with an oblique apiculus at one end, 8-12X6-8 n\ 

 stipe subequal, white, striate at the top, floccose, hollow, 8-12 cm. long, 1-4 cm. thick; annulus 

 slight, evanescent; volva white, prominent, 2-4 cm. long. 



Type locality: Claremont, California. 

 Habitat : In groves or forests. 

 Distribution : California . 



