1900] DEVELOPMENT OF TRICHURUS AND STYSANUS 321 
description in the possession of curved setae. In order to 
include this plant in the genus, the generic description would 
have to be recast as follows: Stroma erect, cylindrical, dark 
colored, rigid; conidia borne in a loose, oblong head, ovoid or 
lemon-form, sub-hyaline ; head beset with simple or branched, 
straight or curved, sterile threads or setae. The genus would 
include the two following species: 
TRICHURUS CYLINDRICUS Clements & Shear. Rept. Bot. Surv. Nebraska 
4;7. 1896. 
Trichurus spiralis, n. sp.—Sporophores 0.75—3™" high, solitary or in 
blackish-gray patches : stipe simple or branched, black, composed of man 
brown septate threads: capitulum shorter than the stipe, cylindrical, obtuse 
or pointed at the apex, often divided into several smaller heads, beset with 
simple, brown, septate, tortuous bristles, which are hyaline at the end: 
gonidia catenulate, oval to oblong, with rounded or pointed ends, often 
inequilateral or lemon-form, dilutely yellowish-brown, 5-6 by 2.5—3u. 
On decaying wood, raspberry canes, and on an insect pupa. The plant 
is easily recognized by the long brown sterile threads in the capitulum. 
As was stated at the beginning of this paper, 7. spiralis was 
obtained from decaying wood in the autumn of 1898. The same 
plant had been previously collected here by Professor Atkinson 
on raspberry canes. Specimens from cultures of this former 
collection were preserved, and although spores from the older 
material failed to germinate, the plant was easily identified as 
being the same as that here described. 
BoranicAL DEPARTMENT, CORNELL UNIVERSITY. 
EXPLANATION OF PLATES XXIII AND XXIV. 
PLATE XXII, Trich spiralis 
Perfect sporophore. 
pores, 
Same forming mycelium. 
Young mycelium. 
Figs. 6-7. Penicillium-fruits. 
Figs: 8-10. Small sporophores; 94, descending branch; 94 and 102, 
ascending branches. 
si 
ae 
Fig. 3. Germinating spores. 
“te 
of, 
