Massee. — On the Fungus Flora of New Zealand. 307 



Allied to Naucoria sideroides. For distinctive features, 

 see note under last-named species. 



37. Naucoria semiorbicularis , Bull., Champ. France, tab. 422 ; 

 Austr. Fung., p. 55 ; Sacc, Syll. v., no. 3470. 



Pileus hemispherical, then expanded, even, glabrous, 

 slightly viscid, at length rivulose, tawny-ferruginous, ochra- 

 ceous when dry, 2-5-5 cm. across when expanded; flesh thin,' 

 whitish ; gills adnate, rarely more or less sinuous, very broad, 

 crowded, pallid, then rusty - orange ; spores elliptical, 

 10 X 5-6 /A ; stem 5-10 cm. long, 2-4 mm. thick, tough, 

 nearly straight, pale-ferruginous, shining, base usually darker, 

 hollow, the cavity containing a free strand which readily splits 

 into fibrils. 



Among short grass, &c. Waitaki, New Zealand. Australia, 

 India, Europe, United States. 



Allied to Naucoria pediades, from which it is readily dis- 

 tinguished by the viscid pileus, broad gills, and rusty or 

 ferruginous stem. 



38. Naucoria siparia, Fries, Epicr., p. 201 ; Austr, Fung., 

 p. 55; Sacc, Syll. v., no. 3507. 



Pileus convex, then obtuse, not umbilicate, rusty-red, 

 densely clothed with fasciculate tufts of down resembling 

 minute scales, 1-2 cm. broad; gills adnate, broad, rather 

 distant, coloured like the pileus, margin flocculose ; spores 

 7-8 X 5-6 /A ; stem about 2-5 cm. long, slender, equal, squamu- 

 lose up to the ring, apex glabrous, coloured like the pileus. 



On the ground, twigs, &c. New Zealand. Australia, 

 Europe. 



Distinguished by the squamulose stem and pileus. Nau- 

 coria crinacea, a species not recorded for New Zealand, closely 

 resembles the present, but difi'ers in the umbilicate pileus, 

 stem squamulose nearly or quite up to the apex, and the 

 margin of the gills quite entu'e. 



13. Hebeloma, Fries. 



Pileus regular, often rather fleshy, cuticle of the pileus not 

 torn into scales or fibrils, smooth, often viscid, margin 

 incurved when young ; veil fibrillose or absent ; gills 

 aduexed and sinuate ; stem central, fibrous ; spores dingy- 

 ochraceous. 

 Heheloma, Fries, Syst. Myc, i., p. 249 (as a subgenus of 



Agaricus). 



Closely allied to Inocybe, which differs mainly in having 



the cuticle of the pileus torn into scales or fibrils. Agrees 



structurally with TricJioloma in the Leucosporcs. Growing on 



the ground. 



