species of North American Fungi. 419 



Pileas |-| of an inch across, plane, membranaceous, covered 

 with brownish floccose scales ; margin striate. Stem :|-1 inch 

 high, not i a line thick, of the same colour as the pileus, atte- 

 nuated downwards. Ring persistent, situated about the middle of 

 the stem. Gills white, broadly ventricose, distant, free. Spores 



white, 2 To ^^ ^° ^^^^ loi^o- 



Closely allied to A. fulvaster, of which it has exactly the habit, 

 but it has not the same bright colour, nor are the gills thick. 

 It is still nearer to A. cultorum, but the plane and not hemi- 

 spherical head and slender stem give it a very different appear- 

 ance, and the colour is much more dingy in the dry plant. The 

 spores vary very much in size, but we have seen none so long in 

 this species as in A. cultorum. 



5. Agaricus (Lepiota) fulvaster, n. s. Par\Tis; pileo plano- 

 convexo candido e velo fulvo squamoso-maculato; margine striato- 

 sulcato plicatoque; stipite gracili glabro sursum annulatoj 

 annulo fulvo; lamelHs attingentibus distantibus crassiusculis 

 candidissimis. Curt. no. 2550. Amongst grass in sandy soil, 

 July, South Carolina. 



Gregarious. Pileus 3-6 lines across, plano-convex, white, but 

 spotted with the scaly remnants of the tawny veil ; margin sul- 

 cate, sometimes splitting at the back of the gills as in Coprinus ; 

 centre tawny, subumbonate ; substance brittle, thickish in the 

 centre. Stem slender, nearly an inch high, scarcely i a line 

 thick, white, smooth, slightly thickened at the base, where there 

 are a few byssoid rootlets, tough fibroso-spongy within. Ring 

 tawny, subpersistent, situated about the middle of the stem. 

 Gills ventricose, not crowded, attached to a distinct collar, which 

 is not however separate from the stem, rather thick, of a pure 

 white ; margin even or slightly eroded. 



A small but extremely elegant species allied to A. serninudus, 

 Lasch. 



6. Agaricus (Collybia) Texensis, n. s. Connato-csespitosus ; 

 pileis glabris subcampanulatis fortiter umbonatis, obtusissimis 

 carnosis albidis, stipite spadiceo velutino ; lamellis latis ventri- 

 cosis sinuato-adnatis candidis. Curt. no. 3162. Texas, C.Wright. 



Connato-csespitose. Pilei 2 inches or more across, camose, 

 subcampanulate or expanded, very strongly umbonate, extremely 

 obtuse, dingy white. Stems 3 inches high, ^ of an inch thick, 

 of a rich brown velvety. Gills broad, ventricose, white, sinuated 

 behind, shghtly adnate. 



Allied to A. pudens, but differing evidently in habit and in the 

 smooth pilei. 



7. Agaricus (Collybia) detersibilis, n. s. Gregarius ; pileo 

 piano umbilicato albido subfuligineo ; margine striatulo ; stipite 

 solido pruinoso pileo concolori ; lamellis adnatis albidis. Curt. 



29* 



