CYTIDIA CORNEA, FROM MISS A. V. DUTHIE, SOUTH 

 AFRICA (Figs. 935 and 936). Dried plant discoid with recurved 

 margin, 8-10 mm. in diameter, pale flesh color. Tissue hard, horny, 



Fig. 935. 



Fig. 936 



cuts with difficulty. When soaked it is pure white, firm, with smooth, 

 shiny hymenium on upper surface only. Context white, firm. Basidia 

 clavate, hyaline, with long sterigmata. Spores globose, large, 14-16 

 mic., pale yellowish tint, surface uneven. Context hyphae hyaline, 

 slender, similar to the hyphae of a Tre- 

 mella. Cystidia crested. 



It is customary nowadays to refer 

 to Aleurodiscus all Thelephoraceae with 

 large spores and basidia. This is not a 

 Thelephora in fact. It is neither cartila- 

 ginous nor fleshy, but subgelatinous with 

 such firm texture that gelatinous does not 

 express it, but it swells on absorbing mois- 

 ture, and the hyphae are same nature as 

 gelatinous plants. 



It is quite embarrassing to refer this 

 plant to any established genus. It lies 

 between Cytidia and Aleurodiscus. The 

 hymenial structure is of the latter, the gela- 

 tinous tissue that of the former. It is 

 neither in fact. I was inclined towards 

 Aleurodiscus, but I sent the plant to Rev. 

 Bourdot, and he decides on Cytidia. To 

 include it in either genus, the limitation 

 of the genus must be stretched. Our figure 

 935 represents the dried specimen as re- 

 ceived from Miss Duthie. Figure 936 is 



same after it is soaked out. We present a figure (937), kindly pre- 

 pared by Rev. Bourdot, to show its hymenial character. It will be 

 noted that it has the large spores, basidia and crested cystidia of 

 Aleurodiscus. Crested cystidia are chiefly known in Aleurodiscus. 

 They are called "dendrophysen" by the Germans, "hyphes para- 

 ph ysoides" by the French. 



POLYPORUS (AMAUR.) INFULGENS, FROM REV. C. 

 TORREND, BRAZIL (Fig. 938). Pileus with a dull surface, color 

 of applanatus. Stipe pleuropodial, concolorous. Context pale. 



656 



Fig. 937. 



