96 MISSOURI BOTANICAL GARDEN. 



Secondary Conidia. 



The secondary conidia are borne at first in loose, open 

 clusters which, after standing for a few days in moist air, 

 fall together in rounded masses, adherent to the terminus 

 of the conidiophores (pi. 9, f. 6). They are hyaline, 

 obovate to club-shaped, and are not guttulate except when 

 old. They measure 4/i to 8/x by 1/j, to 2/*, averaging 5^ 

 by 1.8/*. 



Primary Conidia. 



The stalks or stromata bearing the heads of primary coni- 

 dia are white at first, changing to a yellow color, and often 

 to a dark brown at the base (pi. 9, f. 5). They measure 

 50/x to 750/* by 10^ to 90/x, and are composed of parallel 

 filaments measuring 1/* to 2/z in diameter. These bear 

 conidia terminally which are held together by mucilage in 

 a flattened, oval head, which is white at first, then creamy 

 yellow, finally a light brown when old and dry. The pri_ 

 mary conidia are hyaline, obovate, and measure 4^ to 5fi 

 by I/a to 2ft (pi. 9, f. 7). 



In cultures on rice and potato tubes^tall Anthina-like, 

 sterile, branching stalks, or stromatal outgrowths of a 

 light brown color from 1 mm. to 4 mm. in height, are 

 formed. These are very plainly abortive fruiting organs. 



Graphium album (Corda) Sacc. 



A species of Graphium was found growing on the wood 

 of the beech, Fag us atropunicea (Marsh.) Sud worth. This 

 discolored the wood a brown color. It was found to be a 

 species resembling G. aureum, but sufficiently distinct to 

 be separated from the latter species. A culture was sent 

 to Mrs. Flora Patterson, Mycologist of the Bureau of Plant 

 Industry, Washington, D. C, who identified the fungus as 

 probably Graphium album (Corda) Sacc, a species which 



