JAN. 1896. FLORA OF W. VIRGINIA MILLSPAUGH & NUTTALL. 123 



G. Alni E. & E., sp. nov. 



TYPE HABITAT: On living leaves Alnus rugosa, Nov. 24, 1894 

 (Nut fall, discov. 1737, 624). 



Spots dirty drown, suborbicular, indistinctly zonate, .5 to i 

 cm. diameter, paler in the center, border concolorous, rather in- 

 definite; acervuli epiphyllous, numerous, small, 100 to 120 // 

 diameter, chestnut color, becoming darker; conidia oblong- 

 elliptical, 12 to 1 6 x 6 to 8 //. 



Differs from G. cylindrospermum Bon., on the same host, in its 

 much broader conidia, and from G. rubicolum E. & E. in the dif- 

 ferent character of the spots and rather broader conidia. 



G. nervisequum (Fckl.) Sacc. 



On leaves Platanus occidentalis, June 10, 1894. Sporules 12.5 

 to 18 x 4 to 6 ti. (Nuttall, 1555,526). 



G. Robergei Desm. 



On Carpinus Caroliniana, July 16, 1894 (Nuttall, 1608). 



G. betularum Ell & Mart. 



On Betula nigra, sporules 10 x 7 //, July 16, 1894 (Nuttall, 

 1607). 



G. cylindrospermum Bon. 



On leaves of Alnus rugosa. Spores 8 to 10 x 2 to 2.5 /* (Nutt- 

 all, 1875). 



G. venetum Speg. 



On living leaves of ; Rubus strigosus, Sept. 19, 1895 (Nuttall, 



G. rubicolum E. E., sp. nov. 



TYPE HABITAT: On leaves of Rubus strigosus .(Nuttall, discov. 



747)- 



Spots at first numerous, angular, small and yellowish or red- 

 dish-yellow, soon confluent forming large brown, dry, dead spots 

 of irregular shape and indefinite outline, occupying a large part 

 of the leaf. Acervuli not numerous, scattered, epiphyllous, 

 prominent, resembling perithecia; conidia oblong-elliptical, 12 

 to 1 6 x 6 to 7 IL. 



Differs from G. Rubi E. & E. in its larger, fewer black acervuli 

 and broader conidia, which also are about twice as large as in 

 G. Venetum Speg. 



MYXOSPORIUM Link. 



M. luteum E. & E., Proc. Phil a. Acad., 1893, 458. 



TYPE HABITAT: On bark Hieoria ovata, April to July, 1893 (Nutt- 

 all, discov. 1015, 79). E. & E. N. A. F. 2953. Fungi Colum- 

 biani 150. 



Stroma globose-conical, light yellow, .75 to i mm. diameter, 

 slightly sunk in the inner bark, unilocular and opening by a single 

 pore. The surface of the inner bark around this pore is of a pale 

 slate color, the colored portion definitely limited by a black line 



