APPEL AND STRUNK : Centralblattf. Bakteriologie Para- 

 sitenkunde und InfektionskrankJieiten, Abt. II, Bd. XI, 1903. 



Nectria Jujigeri, P. Henn, found on fruits of cacao in the 

 Cameroons. 



Diagnosis: — Perithecia csespitose, sessile or almost 

 sessile, ovate or mammiform, minutely granulated, 

 250-300 microns diam. ; asci cylindric-clavate, stalked, 

 eight-spored ; spores distichous, ellipsoid or oblong, 

 i-septate, not constricted, rounded at both ends, hyaline, 

 24-28 by 8-10 microns. 



HENNINGS : Fungi camerunenses I ; Englers Bot. Jahrb. 

 Bd. XXII, 1897, S. 72. 



SPHyEROSTILBE FLAVIDUM, Massee. 

 (Coffee Disease of New World.) 



This disease has been reported from Guatemala, New- 

 Granada, Costa Rica, Venezuela, Nicaragua, Dutch Guiana 

 and Brazil ; recently the fungus has been found in Dominica. 

 It is known as "spot" or "small pox " in allusion to the 

 spotted appearance of the leaves, young shoots and fruits 

 of infected trees. Scattered circular patches are formed on 

 the leaves and are equally evident on both sides. The 

 leaves become yellowish and fall, and in some cases 

 complete defoliation results. On the shoots the spots 

 are whitish and more or less elongated. 



The conidial form of the fungus (Stilbnm flavidum) 

 appears on the surface of the spots in the form of yellowish, 

 pin-like structures, each of which bears conidiophores with 

 a single conidum at the tip. All attempts to infect coffee 

 plants with these conidia have failed. The ascigerous 

 stage is developed on the whitish patches of the stem and 

 fruit, but not on the leaves. The fungus is concluded to be 

 reproduced by ascospores only, the conidia being regarded 

 as effete. 



Great attention should be paid to the destruction of the 

 diseased stems and fruits, since they contain the spores 

 which serve to carry on the disease. Spraying with 

 Bordeaux mixture or with ammoniacal copper carbonate 

 may prove effective in preventing the disease. 



Diagnosis. — Perithecia ovate, densely massed into subor- 

 bicular, irregular patches, slightly reddish, verrucose, with 

 a slightly prominent, papillate ostiole ; asci cylindrical, 



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