300 BOTANICAL GAZETTE, [Nov., 
merely one stage or condition of certain ascigerous or ascosporous 
fungi, yet to be determined. Professor W. G. Farlow has very 
carefully described and illustrated the various conditions or spore- 
bearing forms of the fungus that causes the Black Rot of the 
plum and cherry trees, Spheria morbosa. In this case there are 
shown pyenidia containing stylospores and spermagonia filled 
with spermatia, conidia produced externally on short stalks or 
conidiophores, and sporidia, which are spores formed in little sacs 
or asci within a perithecium. The last or ascigerous form is the 
mature or perfect state of the fungus. We have here four dis- 
tinct varieties of supposed reproductive bodies, pyenidia, sperma- 
gonia, conidia and sporidia. In the black rot we have seen the 
first two upon the same mycelium and even associated in the same 
stroma, so that there is no possible doubt of their connection, and, 
reasoning from analogy, we would expect to find also the conidial 
and ascigerous forms. 
ONIDIA.—I am confident that I have seen upon completely 
diseased berries gathered from the vine, but more particularly 
upon similarly diseased berries kept moist for a few days under a 
bell jar, the conidiophores of the Physalospora bearing imperfectly 
developed conidia. T hey certainly appeared to be growing from 
the exposed portion of the pyenidia, but whether from these or 
froin specially formed sclerotia I am not prepared to say. 
essrs. Viala and Ravaz state that berries diseased with black 
rot, placed in the earth, have developed sclerotia ; and, main- 
i to 20° C., th 
by this disease. These berries, placed in a moist atmosphere at a 
temperature of 20° to 29° C., produced the same conidioferous 
filaments, 
The conidia serve to propagate the fungus, and consequently 
the rot which it occasions. If their development be delayed un- 
‘til spring, as perhaps it often is, a knowledge of their existence 18 
particularly important, for by them the disease may .be perpet- 
uated from year to year, | 
Sporip1a.—The discovery of the mature or ascigerous form 
of the so-called Phoma uvicola, or what it seems reasonable. to as- 
sume to be such, is recorded by Mr. J. B. Ellis, of Newfield, New 
Jersey, in the Bulletin of the Torrey Botanical Club for August, 
1880 (vol. vii, ge 90). Mr. Ellis says that in the early part 
Dr E. C. Bidwell, of Vineland, New Jersey, 1D 
formed him of having made this discovery on grapes which had 
