94 MISSOURI BOTANICAL GARDEN. 
PRIMARY CONIDIA. 
Primary conidia are elliptical, resembling in appearance 
and form the secondary conidia. They are hyaline, and 
measure 3.54 by 1.5, av- 
erage, in size (pl. 7, f. 9, 
10). They are borne term- 
inally on alternately branch- 
ed, hyaline hyphae, and fall 
together in large, spherical, 
mucilaginous heads. The 
heads vary in color from a 
white to a dingy yellow. 
They measure, with the 
mucilaginous drop, 20 to 
00m in diameter. The 
stalks vary from gray to 
brown or black, and measure 
fron 1 mm. to 2 mm. in 
length, and 10n to 40m in 
diameter. They are usually 
solitary at first, but later may 
* become gregarious, or even 
i branched, especially in older 
G. Blampum, X60. cultures where a secondary 
Stroma, with conidiophores. 
growth has taken place. 
In the study of this species several instances were noted 
where hyphae bearing the secondary conidia branched 
directly from filaments connected with the heads bearing 
the primary conidia, thus giving additional proof of the 
relation between the two forms of fruiting. (See figure). 
2. Species with secondary conidia borne either in simple 
clusters or in clusters of short branched chains. 
Graphium aureum nD. sp. 
The first species of Graphium differing in conidial forms 
