NAUCOEIA. 155 



thickened at tlie base, rather wav}^ brownish, densely 

 covered with white fibrils, silky-spotted when dry. 



Agaricus (Naucoria) anguineus. Fries, Epicr., p. 193; Cke., 

 Hdbk., p. 174; Cke., Illustr., p. 455. 



On the ground. 



Allied to N. cucumis, but distinguished b}" being more 

 robust, larger, absence of cucumber-like smell, and by the 

 jDresence of the veil near the edge of the pileus. 



Naucoria centuncula. Fr. 



Pileus ^,—1 in. across, rather fleshy, often excentric, 

 convexo-plane, obtuse, even, dr^^ lurid-greenish, then yel- 

 lowish-green, becoming pale, but not hygrophanous ; gills 

 adnate but soon separating from the stem, broad, thickish, 

 greyish-yellow, margin minutely toothed with greenish-yel- 

 low flocci ; stem about 1 in. long, 1-2 lines thick, almost 

 equal, usually, from the position, curved, yellowish-grey, 

 powdery above, with white down at the base, hollow. 



Agaricus (^Naucoria) centunculiis, Fries, Syst. Myc, i. p. 262 ; 

 •Cke., Hdbk., p. 174; Cke., Illustr., pL 601a. 



On rotten wood. 



Gregarious, sometimes rather caespitose, firm, tough, veil 

 absent, colour more or less green. 



Naucoria horizontalis. Bull. 



Pileus ^§- in. across, fleshy, convexo-plane, obtuse, even, 

 pale cinnamon; gills rounded behind, almost free, broad, 

 rather distant, plane, cinnamon ; stem J— | in. long, 1 line 

 thick, solid, smooth, incurved, pale cinnamon. 



Agaricus horizontalis, Bulliard, t. 324 ; Cke., Hdbk., p. 175; 

 Cke., Hlustr., pi. 601b. 



On trunks of elm, &c. 



Gregarious, growing horizontally, every part cinnamon. 



Naucoria semiflexa. B. & Br. 



Pileus up to J in. across, convexo-plane, chestnut-colour, 

 margin fringed with a delicate white, silky veil, hj-gro- 

 phanous ; gills adnexed, rather broad and distant, brownish ; 

 stem ^-J in. long, incurved, pale, solid ; flesh white, as is 

 also that of the pileus ; spores elliptical, amber, rather 

 coarsely warted, 8 x 5 /a. 



