collected in the expedition of the Beagle. 293 



fulvous-cinnamon^ growing out of a thick spongy mycelium, 

 which is attached to wood and leaves. 



It is matter of doubt whether this species should be placed 

 in Dcedalea or Lentinus, though the habit is rather that of the 

 former genus. The gills are not the least sinuous, and do 

 not anastomose at all above ; their colour is nearly that of 

 deep tinted specimens of D. biennis. The pileus resembles 

 somewhat that of Polyporus perennis, and in young plants 

 is probably infundibuliform. The sporidia appear to have 

 fallen out entirely, as is in general the case with exotic Hyme- 

 nomycetes, and the cells of the surface of the hymenium have 

 grown since the plant was gathered, so that the form of the 

 sporophores [basidia, Decaisne) cannot be detected. This is 

 frequently the case in the coriaceous fungi, and can only be 

 prevented by very prompt drying, care being taken to place 

 the specimen when laid to dry in its natural position. No 

 number being attached to this species, I am not able to say 

 where it was gathered, but probably at Rio Janeiro. 



Two other species are in the same collection which I am 

 unable to determine ; one a byssoid production, of doubtful 

 affinity, from Terra del Fuego, No. 496 ; the other an imper- 

 fect Thamnomyces (probably T. chordalis) from Rio Janeiro, 



No. 575. 



EXPLANATION OF PLATE VIIL 



Fig. 1 . a. Sporidesmium adscendens on resupinate Polyporus versicolor, na- 

 tural size. 

 6, c, d. Filaments, more or less magnified. 

 Fig. 2, a. Stilhum lateritium on bark, natural size. 



b. The same, magnified. 



c. Two individuals more highly magnified. 



d. Flocci, of which the capitula are composed. 



e. Sporidia. 



PLATE IX.* 



Dcedalea eruhescens. 

 * Plate IX. will be given next month in the Supplement Number. 



