THE ROSY-SPORED AGARICS OF NORTH AMERICA 



WILLIAM A. MURRILL 



New York Botanical Garden 



This subtribe of the gill-fungi is characterized by rosy or rosy- 

 ochraceous spores and is well represented by the common and widely 

 distributed species, Pliiteus cervinus. The North American species 

 may be grouped in ten genera, distinguished by the following key: 



Subtribe PLUTEANAE 



Pileus irregular, dimidiate or resupinate. I. Claudopus. 



Pileus regular, sometimes eccentric in Pletiropiis. 

 Volva and annulus wanting. 

 Stipe cartilaginous. 



Margin of pileus incurved when young. 



Lamellae decurrent. 2. Eccilia. 



Lamellae adnata or adnexed. 3. Leptoniella. 



Margin of pileus straight and appressed when young; 



lamellae free or adne.xed. 4. Nolanea. 



Stipe fleshy. 



Lamellae decurrent, rarely varying to adnate. 5. Pleuropus. 



Lamellae sinuate or adnexed. 



Spores not angular, rosy-ochraceous in mass. 6. Lepista. 



Spores angular, rose-colored in mass. 7. Entoloma. 



Lamellae free. 8. Pluteus. 



\'olva wanting, annulus present. 9. Chamaeota. 



\olva present, annulus wanting. 10. Volvariopsis. 



A few of these generic names may be unfamiliar to you, such as 

 Leptoniella for Leptonia, Pleuropus for CUtopilus, and Volvariopsis 

 for Volvaria, but these changes have been required by the rules of 

 nomenclature. 



The time at my disposal will not permit more than a hasty sum- 

 mary of the North American species belonging to these genera. A 

 fuller treatment may be found in North American Flora, volume 10, 

 part 2, to be issued shortly. 



I. Claudopus 



Claudopus nidulans, the best known species, occurs throughout 

 (\uiada and the United States; C. avellaneus is known from Oregon 

 only; and there are no species reported from tropical North America. 



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