170 REPORT OF THE DEPARTMENT OF BOTANY OF THE 
(9) The Sporotrichum produces two kinds of spores,— one, 
globular and non-septate, the other elongated and generally once- 
septate (p. II). 
(10) All affected buds should be picked and burned as soon as 
they appear (p. 15). 
Heald’s figures in his Plate I show well the tendency of the fun- 
gus to produce its spore-bearing branches in clusters. These figures 
represent better than do our own the usual habit of the fungus as 
it is found in diseased carnation buds. Our own figure (Plate IV, 
fig. 1) was made from one of the simpler forms of hyphz which 
occur when the fungus is growing very rapidly in a moist chamber. 
On page 11 Heald says: ‘‘ In some cases in crowded cultures 
the hyphze may give rise to new conidia at their tips without any 
branching or on very short lateral branches (pl. III, fig. 18). The 
writer has observed the same phenomenon in cultures on cooked 
apple in petri dishes (See Plate XIII, fig. 5). Since this prema- 
ture spore formation was especially common in a certain cul- 
ture which for some unknown reason made a very scant growth, 
we incline to the opinion that it was induced by unfavorable growth 
conditions, 
We do not agree with Heald that bud-rot is necessarily a disease 
of neglected houses and not likely to prove troublesome in green- 
houses that are kept in prime condition (p. 12). The Long Island 
greenhouses in which bud-rot has been troublesome during the past 
three years are exceptionally well managed. 
Probably, Heald’s better success with inoculation experiments is 
due to the fact that he used a very susceptible variety. In deter- 
mining the results of inoculation we (unlike Heald) have relied 
upon general appearance and microscopic examination. In a case 
of this kind Heald’s method of reisolation (p. 10) serves no useful 
purpose except to give the impression that the experiments were 
conducted with exceptional care. But the accuracy of his work is 
discredited by the fact that after making a series of his careful 
(?) inoculation experiments*® with pure cultures he referred the 
fungus to the genus Fusarium, and then, subsequently, explained 
the error as follows (p. 4): “It was found later that the trouble 
**“ Pure cultures were made of the fungus, and successful inoculations 
were carried out. The fungus was again isolated and new inoculations 
made which indicated that the fungus alone was capable of producing the 
rotting.” (Science, N. 5., 23: 620. 20 Ap. 1906.) 
