296 Transactions. — Botany. 



6. Stropharia, Fries. 



Pileus regular, fleshy, often covered with a viscid pellicle ; gills 

 adnate or adnexed, becoming purplish-brown at maturity ; 

 stem present, round which the veil forms a distinct ring; 

 spore purplish-brown. 



Stropharia, Fries, Monogr., i., p. 408 (as a subgenus of 

 Agaricus) . 



Distinguished amongst the PorphyrosporcR by the presence 

 of a distinct ring on the stem in conjunction with attached 

 gills. Stropharia corresponds with Pholiota and Armillaria. 

 Growing on dung or rich ground. 



11. Stropharia semiglobata, Fries, Syst. Myc, i., p. 291 ; Hdbk. 

 N.Z. Flora, p. 603; Austr. Fung., p. 62; Massee, Brit. 

 Fung. -Flora, i., p. 401, fig. 17, p. 351; Sacc, Syll. v., 

 no. 4151. 



Pileus persistently hemispherical, obtuse, even, viscid, 

 pale-yellow, 1-5-3 cm. across ; flesh thin, white ; gills broadly 

 adnate, up to 1 cm. broad in larger specimens, margin 

 straight, greyish, clouded with the dark spores, rather close 

 together; spores 12 x 6//,; stem 6-12 cm. high, 3-5 mm. 

 thick, equal, glabrous, viscid, yellowish, hollow, ring im- 

 perfect, inferior, soon stained with the dark spores. 



On dung. Middle Island, New Zealand. Australia, Tas- 

 mania, South Africa, Europe, Siberia, United States. 



Distinguished by the hemispherical viscid pileus and 

 broad gills. In very large vigorous specimens the pileus 

 sometimes becomes plano-convex. Poisonous. 



7. Agaricus, L. (emended). 



Pileus regular, fleshy ; gills free from the stem, whitish at first, 

 finally dark-umber ; stem central, furnished with a ring ; 

 spores brownish-purple. 



Agaricus, L., Syst. Nat. (1735) (in part). 



Distinguished by the free gills and ring on the stem. The 

 Agaricus of Linnaeus, as interpreted by Fries, was divided into 

 several subgenera by the last-named author, and the original 

 name Agaricus has been retained for those species included in 

 the subgenus Psalliota of Fries. Agaricus as here understood 

 is morphologically similar lo Lepiota in the Leucospora. All 

 grow on the ground ; often in open pastures. 



12. Agariciis arvensis, Schaeffer, Icon., t. 310, 311 ; Flora N.Z., 

 ii., p. 174; Hdbk. N.Z. Flora, p. 603; Austr. Fung., p. 60; 

 Sacc, Syli. v., no. 4039. 



Pileus bluntly ovate, then expanded and slightly convex, 

 slightly mealy at first, white and silky, becoming stained pale- 



