Rev. M. J. Berkeley on Exotic Fungi. 377 



iifully connected by strong veins, as in the section Calodontes, 

 Stem 3 inches high, about two hnes thick. 



Apparently nearly related to A, velutipes, but I believe truly 

 distinct. The stem is not always rooting, but neither is this 

 constantly the case in that species. 



On trunks of trees. Brazil. Hook. Herb. 



2. Agaricus {Leucosp, Myc. Hygrocyb. [Leuc. Omph, Myc. 

 Kl.)) umbraculwn, Kl. in Linn. vol. viii. p. 478. Ag, [Colly- 

 bia) umbraculatus, Kl. in Hook. Herb. 



Fasciculate. Pileus convex, umbilicate, slightly striate, 

 membranaceous, somewhat tawny [fuscescente-albo, Kl.) ; gills 

 when dry tan-coloured decurrent; stem fistulose, bay, ex- 

 tremely viscid, confluent at the base and blackish. 



Stem 2 — 2| inches high, even. Pileus submembranaceous, 

 3 — 4 lin. broad, tough. Gills rather distant, sometimes di- 

 chotomous near the margin. 



On trunks of trees. Mauritius. Mr. Telfair. 



This species belongs clearly, as to habit, to the section Hy- 

 grocyboidecB of the subgenus Mycena. M. Klotzsch appears 

 not to have suspected this and therefore did not moisten the 

 stem, which drips when wet wdth pellucid slime like Ag, ro- 

 ridus. The pileus has rather a tawny than fuscous hue ; the 

 gills in the recent plant are probably nearly white. It appears 

 very nearly allied to Ag. roridus, yS. stillans. 



3. A, [Omphalia) strigdlus, Berk. Pileus tough, entire, 

 infundibuliform, red-brown, sprinkled, especially towards the 

 margin with minute setulose scales ; margin slightly waved, 

 thin, subinvolute. Gills narrow, decurrent, entire, scarcely 

 anastomosing at the base. Stem short, clothed with coarse, 

 velvety, fawn-coloured pubescence, 



Pileus 2^ inches broad, nearly of the same colour as Ag. vac- 

 emus, apparently very obscurely zoned; gills crisp when dry 

 and wood-coloured, running down till they are lost amongst 

 the down of the stem. Stem 1 inch high, ^ thick, rather 

 swollen at the base. This species appears to be nearly allied 

 to Ag. velutinus, Fr. in Linn., and for the same reason is 

 placed in the subgenus Omphalia, though its affinities are with 

 Pleuropus. The gills are crisp when dry and entire ; the habit 

 too removes it from Lentinus. 



Ann. Nat. Hist. Vol. 3. No. 19. Aug. 1839. 2 e 



