. REPORT OF THE STATE BOTANIST I9II 29 



Mycena atroumbonata n. sp. 



Pileiis siibmembranaceoiis, convex becoming- broadly convex or 

 nearly plane, umbonate, striate plicate from the margin half way to 

 the umbo, glabrous, dark watery brown and shining when moist, 

 grayish brown with a black umbo when dry; lamellae thin, 

 moderately close, widely sinuate at the inner extremity, decurrent 

 with a tooth, white when young, whitish or livid white when mature ; 

 stem slender, rather long, glabrous, hollow, radicating, colored like 

 the pileus, with a white villosity at the base; spores oblong or 

 ellipsoid, granular within, often 2-nucleate, 6-9 x 5-6 fi. 



Pileus 1.2-3.2 cm broad; stem 5-8 cm long, 1-2 mm thick. 



Gregarious. Mossy prostrate decaying trunks of hemlock, 

 Tsuga canadensis (L.) Carr. North River. September. 



This species is closely related to Mycena galericulata 

 Scop, with which it probably has hitherto been confused. It differs 

 in its gregarious mode of growth, its habitat, its black umbo, its 

 widely plicate striate margin of the pileus, its pure white young 

 lamellae and its more expanded mature pileus. 



Mycena metata Fr. 

 Ground. Canandaigua. September. Miss E. C. Webster. 



Naucoria arenaria n. sp. 



Pileus thin, convex or nearly plane, glabrous, pale yellow or red- 

 dish yellow with paler' margin ; lamellae broad, distant, unequal, 

 sinuate, brownish ferruginous ; stem slender, rigid, glabrous, stuffed 

 with a white pith, colored like the pileus, pseudobulbous ; spores 

 brownish ferruginous 15-20x10-12 [x. 



Pileus .75-2 cm broad ; stem 2-3 cm long, 1-2 mm thick. 



Sandy soil. Karner, Albany co. August. 



A small species closely related to Naucoria platysperma 

 Pk. but much smaller with more distant lamellae and a more rigid 

 stem enlarged at the base by a globe of sand bound together by the 

 mycelium and firmly attached to the stem. 



Oenothera muricata L. 



Canandaigua. August. Mrs E. P. Gardner, who also sends 

 specimens of Oenothera muricata canescens (T. & 

 G.) Robin?. 



Omphalia offuciata Fr. 

 Under or near pine trees. Luzerne, Warren co. June. In our 

 specimens the spores are broadly ellipsoid or nearly globose. 



