74 



Mycologia 



Pileus 1 0-18 cm. broad. 



Surface pure-white, with a few brownish 



scales 9. A. subpratensis. 



Surface dirty-white or yellowish, with 



numerous scales 10. A. praemagnus. 



Pileus reddish, umbrinous on the disk 11. A. jejunus. 



Species occurring- in cultivated or exposed soil, manure 

 heaps, rubbish, etc. 

 Pileus 3-6 cm. broad. 



Stipe 2.5 cm. long 12. A. herradurensis. 



Stipe 4—6 cm. long. 



Surface white 13. A.Earlei. 



Surface pale-chestnut 14. A. xuchilensis. 



Pileus 6-8 cm. broad, white with ochraceous disk . . 15. A. ochraceidiscus. 

 Pileus 10 cm. or more broad. 



Surface decorated with small scales t6. A. Hornei. 



Surface decorated with large scales. 



Surface scaly at the center only ; spores 



11X8 /jl 17. A. guadelupensis. 



Surface scaly all over; spores 5 X 3,-5 /U .. 18. A. Shaferi. 



i. Agaricus bambusigenus Berk. & Curt. Jour. Linn. Sac. 10: 



291. 1868 



Described from three collections by Wright in Cuba, where it 

 was found growing in thick clusters on dead roots of bamboo. 

 The pileus is convex to plane, umbonate, reddish, squamulose ; 

 stipe squamulose, white, 8 cm. long; spores ellipsoid, smooth, 

 often obliquely papillate at the base, dark-purplish-brown, uni- 

 guttulate, mostly 4.5 X 2.5 ft, a few reaching 6X4^; annulus 

 superior, ample. The type specimens at Kew resemble A. Earlei, 

 but the surface is more imbricate-squamulose, with dark umbo, 

 and the stipe twice as long. 



2. Agaricus angustifolius sp. nov. 



Pileus thin, convex to expanded, gregarious, 4-6 cm. broad; 

 surface dry, grayish with brown scales, brown on the disk; 

 margin entire, concolorous ; context thin, whitish, with mild 

 taste; lamellae free, much crowded, narrow, bright-pink to brown: 

 spores ellipsoid, smooth, obliquely apiculate at the base, rather 

 pale purplish-brown with a yellowish tint under the microscope, 

 uniguttulate, 5-5.5X2.5-3^; stipe cylindric, glabrous, pallid, 

 hollow, 6 cm. long, 4 mm. thick; annulus ample, attached very 

 near the apex of the stipe. 



