GRAPHIUM. 457 



Graphium nigrum. Sacc. 



Stem short, scarcely 1 mm. high, blackish ; head ovate or 

 subglobose ; conidia subcylindrical, minute, numerous. 

 Graphium nigrum, Sacc., Syll., iv. n. 2931. 

 Stilbum nigrum, Berk., Engl. Fl., v. p. 330. 

 On rotten stems of Eriophorus. 



Graphium graminum. Cke. & Mass. 



Scattered, minute, dispersed over the leaves and culms, 

 grey ; stems erect, composed of delicate septate threads, 

 almost colourless when separated; conidia elliptical, con- 

 tinuous, hyaline, 6 x 3-4 //.. 



Graphium graminum, Cke. & Mass., Grev., xvi. p. 11. 



On Gi/nerium. 



Graphium penicilloides. Corda. 



Stems scattered, black, short, 100-130 /x high, thick, 

 obtusely clavate above, sometimes swollen below, composed 

 of fasciculate hyphae, paler upwards; conidia acrogenous, 

 linear, hyaline, 4-5 x 1'5 /*, forming a whitish head. 



Graphium penicilloides, Corda, Icon. Fung., i. p. 18, t. 5, 

 f. 251 ; Sacc., Syll., iv. n. 2895. 



On bark of sycamore, poplar, &c. 



II. CHROMOCEPHALUM. Head brightly coloured. 



Graphium anomalum. Sacc. 



Minute, hardly 1 line high; head subglobose, yellow; 

 stem black, yellow upwards, generally even, sometimes 

 rather floccose at the base ; apex expanded, disciform, conidia 

 almost fusiform. 



Graphium anomalum, Sacc., Syll., iv. n. 2937. 



Stilbum anomalum, Berk., Mag. Zool. & Bot., n. 34, t. Ill, 

 f. 9. 



On dead branches. 



Graphium bicolor. Sacc. 



Exceedingly minute; head rounded, whitish, at length 

 becoming olive; stem rather firm, subulate, pallid, olive- 

 brown at the base. 



Graphium bicolor, Sacc., Syll., iv. n. 2943. 



