87 



13- Lamellae subdistant. 



Lamellae densely crowded. 



14. Pileus squamulose, fibrillose or pruinose. 

 Pileus glabrous. 



15. Pileus white or pale yellow. 

 Pileus brownish. 



16. Pileus with a gelatinous upper stratum. 

 Pileus not gelatinous above. 



17. Pileus white; lamellae white. 

 Pileus pale yellow ; lamellae fulvous. 



18. Pileus tomentose, 5-7 cm., subsessile. 

 Pileus pruinose, becoming white when dry. 

 Pileus furfuraceous, 2 cm. ; stipe dilated above 



19. Pileus very glabrous; stipe dilated below ; lamellae yellowish. 



P. stipticus gutturosits Mont 

 Pileus glabrous ; stipe merely a prolongation of the pileus, hairy at base. 



P. betidimis Pk 



20. Pileus tomentose or pulverulent. 21 

 Pileus glabrous, striate, cervinous, cespitose. 



21. Lamellae covered by a veil when young. 

 Lamellae not covered by a veil. , 



22. Pileus gray ; lamellae dark ferruginous. 

 Pileus reddish ; lamellae blackish-brown. 



P. torulosus Fr. 

 P. catitherelloides Mont.* 



15- 

 19. 



16. 



18. 



P. angustatus Berk. 



17- 



P. Wrightii B. & C* 



P. xylopodius (Lev.) Fr.* 



P. alliaceits B. & C. 



P. dealbatus Berk. 



P. stipticus (Bull.) Fr. 



P. eugrammus (Mont.) Fr.* 



P. operculatus B. & C. 



22. 



P. salicinus Pk. 



P. nigrifolius Pk. 



Panns farmacens Schum. of Ellis & Everhart's North American 

 Fungi, No. 2502, is Pleurotiis atro-caeritleits grisetts Pk. Reg. 

 Rept: 44: 35. 



New York Botanical Garden. 



A NEW ARABIS FROM GEORGIA 



By Roland M. Harper 



In the summer of 1901 I collected in the coastal plain of 

 Georgia a few fruiting specimens of an Arabis which seemed to 

 be undescribed. Wishing to see more complete material, I turned 

 some seed of it over to the New York Botanical Garden, and the 

 plants growing from these seeds have just flowered for the first 

 time. The species may now be characterized as follows, all of 

 the description except that of the fruit being drawn from living 

 specimens : 



* Known from tropical America only. 



