AGARICINI. 159 



seem to be A. hybridus, Sow., whose affinities arc doubtful. 

 It is tlic only species of the pine-borne Flammulce that has 

 been sent me as British, but it is probable that one or two 

 occur in Scotland. 



Subgenus 19. NAUCOErA. — Stem cai'tilaginous externally ; margin 

 more or less convex ; pilous inflexed. 



* Pileiis smooth; sjwres of a hriglit ferruginous tint. 



282. A. (Naucoria) Cucumis, P. ; pileus slightly fleshy, 

 broadly carapanulatc, smooth, turning pale; stem slender, 

 firm, smooth, dark-brown, thickened at the tip, subpruinose ; 

 gills slightly annexed, ventricose, pallid, safTron-yellow. — 

 Soiv. t. 341. 



Amongst sawdust, etc. Not very uncommon. The dark- 

 brown stem, buff gills, and fishy smell, easily distinguish this 

 curious species. 



283. A. (Naucoria) Centunculus, Fr.; pileus slightly fleshy, 

 convexo-plane, dingy-greenish, then yellowish, turning pale; 

 stem fistulose, clothed with white down at the base, sprinkled 

 M'ith white meal above, cinereous-yellow, as well as the broad, 

 thick, adnate, seceding gills. 



On rotten wood. Rare. Apetliorpe. Pileus only a few 

 lines across. Gregarious. 



281. A. (Naucoria) horizontalis, Bull. ; pileus slightly 

 fleshy, plano-convex, obtuse, even, smooth, watery-cinnamon, 

 as well as the very short, incurved, naked stem, and rounded, 

 free, plane gills. — Sow. t. 311. 



On trunks of elms. Rare. Burghlcy Park, etc. Pileus 

 only a few lines broad. Habit like that of yi. corticola. 



285. A. (Naucoria) nuceus, Bolt. ; pileus submembrana- 

 ceous, globoso-campanuhitc, umbilicatc, dotted ; margin in- 

 curved, somew hat lobed ; stem slender, fistulose, silky, white ; 



