[Vor. 5 
124 ANNALS OF THE MISSOURI BOTANICAL GARDEN 
at first, finally fuscous, running along the branches and mid- 
rib and veins of the leaves, infecting the leaves and rami- 
fying between the cells of the leaf parenchyma, finally emerg- 
ing at many points on the under side of the leaf to form 
minute fructifications which give a mottled appearance to 
the leaf; fructifications soon laterally confluent into a thin, 
arachnoid, perforate membrane covering the under surface 
of the leaf between midrib and principal veins, drying pale 
al 2 C» wt (аз 00 43 
Fig. l. C. koleroga. а-а3, from sketches by Miss Wakefield of structure 
of type in Kew Herbarium; magnification not stated but computed from spore 
dimensions at about 630. a, hypha; al, collapsed basidium; a2, spores; a3, 
young basidia. 0-3, from Porto Rican specimen, X870. b, hypha; 61, ba- 
sidium; 02, spores; 53, young basidia. 
smoke-gray, separable in small pieces, composed of loosely 
interwoven, hyaline or slightly colored, thin-walled, even, 
rigid hyphae 44-6 џ іп diameter, not nodose-septate, running 
parallel with the substratum, and about 1-3 hyphae thick, 
branching at right angles; basidia scattered along the hyphae, 
simple, ovoid, 10-12» 7-8 и, with short sterigmata; spores 
hyaline, even, flattened or slightly concave on one side, 
10-13 343-5 и. 
Mycelial strands in the specimens received are 35 cm. long 
and broken with the branch at the lower end, 4-1 mm. in 
diameter, not swollen into sclerotia; fructifications 9 cm. 
long, 4 em. broad, 30-45 и thick, more or less divided by the 
midrib and principal veins. 
Parasitie on branches and leaves of the coffee plant. India, 
and the Antilles and neighboring regions of South America. 
