or OEETACBOUS PLANTS. 279 



TrPE. — Coawentz' slide in Palseobotanical Museum, Stock- 

 holm. 



Meschinelli's figure is a reproduction of that of Conwentz, 

 which shows the fungus in a low degree of magnification. The 

 species may be taken to include the numerous hyphas that are 

 noticed in petrified woods of Cretaceous pines, though it is 

 probably not a true biological species. 



Genus TRICHOSPORITES, Felix, 



[Zeitschr. deutsch. geol. Ges., vol. 46, 1894, p. 273.] 



Presumably with the characters, of the living genus Tricho- 

 sporium, but incompletely known. 



Trichosporites Conwentzi, Felix. 



1892. " Of. Trichosporium fuscum," Conwentz, Unters, foss. Hblz. 



Schwedens, p. 27, pi. vii, flg. 9. 

 1894. Trichos^iorites Conwentzi, Felix, Zeitschr. deutsch. geol. Ges., 



vol. 46, p. 273. 



Branched, septate hyphse, conidia egg-shaped or oval, circular 

 when seen from one end. Composed of one cell, apparently 

 undivided, and of dark, red-brown colour. 



Host. — Wood of Gedroxylon Ryedalense. 



Horizon. — Senonian. 



LocALiTT. — Eyedal, Sweden. 



Type. — Palseobotanical Museum, Stockholm. 



The specific name and some description of this fungus appear 

 in Felix's paper on Fossil Fungi (Felix, 1894), but it was 

 figured by Conwentz in his paper on the petrified woods of 

 Sweden (Conwentz, 1892), who described the efi'ccts of the 

 fungus on the wood, Cedroxiflmi Ryedalense, and noted that the 

 hyphse are thick-walled, branched, and septate. 



Conwentz' illustrations of the hyphse and conidia are re- 

 produced in the text-figure 25 (p. 280). 



While the name appears to be unfortunate in being too 

 suggestive of affinities with a living genus whore such affinity 

 cannot be established from the data at present available, it 

 seems better to leave it than to multiply poorly established 

 specific names. 



