MYROTHECIUM EXOSPORIUM. 491 



Exosporium tiliae. Link. (fig. 1, p. 442). 



Sporodochia suberumpent, convex, black, i-1 mm. across, 

 becoming shining, compact; conidiophores thick, short, 

 obclavate, 1-septate, brown, 60-70 x 16-18 /A; conidia 

 smoky-olive, epispore very thick, contents divided into 9-11 

 cuboid portions, spuriously 8-10 septate. 



Exosporium tiliae, Link, Obs., i. p. 8, t. 1, f. 8 ; Sacc., Syll. 

 iv. n. 3569. 



Helminthosporium tiliae, Cke., Hdbk., p. 572. 



On lime branches. 



