1898 ] THE DEVELOPMENT OF SOME ANTHRACNOSES 111 
the withered leaves, on the stems, and on the aerial roots. The 
pustules measured 150-180 in diameter; a section through 
the pustules shows a well developed basal stroma, bearing 
closely crowded septate basidia 30—45m in length. The sete are 
colored, three or four times septate near the base. In older 
pustules the stroma passes up around the basidia, forming a cyl- 
inder of a compact association of rather regular rectangular cells, 
The pustules are somewhat superficially situated, the basidia 
extending nearly their whole length above the epidermis of the 
host. 
Closely associated with the Colletotrichum was found a pyre- 
nomycetous form. The perithecia bore a close resemblance to 
those described by Massee” in connection with another conidial 
form belonging to this group, the genus Hainesia. They were 
flask-shaped, having a membranaceous wall several layers in thick- 
ness, borne singly or in clusters, but without a stroma. Asci 
clavate, sessile, 75-80 15—16m, attenuate at base, paraphysate, 
8-spored; paraphyses long, slender, filiform; sporidia elliptical, 
hyaline, or slightly fuliginous, curved 21-24x6-74. The form 
described by Massee belonged to the genus Calospora, and dif- 
fered in the presence of a stroma and in the tri-septate sporidia. 
The perithecia found on the leaves were not valsoid as in Calo- 
Spora, but when two or three were aggregated the necks 
diverged. 
The close resemblance of the two forms and the association 
of a Colletotrichum suggested an interesting study, and a dilu- 
tion culture was made of the conidia in meat-agar. The leaves, 
Which were more or less decayed, were an easy prey to sapro- 
phytic fungi, so that the first dilution was liable to be contami- 
nated. The conidia, however, were found in great abundance 
in plates one and two, and germination was observed. Owing i 
their crowded condition, however, and the liability to contam1- 
Nation, these plates were discarded. Plate three contained but 
©ne colony. It had attained in eight days a diameter of 2" and 
Was nearly uniform in growth. As frequently happens with a 
Kew Bull. Misc. Information 139: 111-120. 1892. 
4 
