BoRTHWICK—A NEW DISEASE OF PICEA. 261 
August no asci were found, but specimens taken late in August 
and kept for some weeks in a moist chamber developed spores 
abundantly. 
The fungus is one of the family of the Spheriaceze, and its 
fructification and spores seem to place it in genus Curcurbitaria, 
of which I regard it as a new species diagnosed as follows:— 
Curcurbitaria picez, Borthwick, n. sp. 
Mycelio intercellulare ; peritheciis arcte gregariis, stipitatis, e 
stromatis effusis evolutis, nigris, carbonaceis ; excipulo pseudo- 
parenchymatico, extus denso nigro, intus spongioso brunneo ; 
ascis clavatis, 4-6—sporis ; paraphysibus filiformibus ; sporis 
uniseriatis, cymbiformibus, 4-10—septatis, muriatis, 20 » longis, 
6» latis. Had. ad hibernacula Picee pungentis. 
EXPLANATION OF THE FIGURES IN PLATE L. 
Illustrating Dr. A. W. Borthwick’s Paper ‘‘A New Disease of Picea.” 
Fic. 1. Picea pungens ; the tree on which the disease was found. ag lower branches 
have been more severely attacked than the bags 
Fic, 2. Twig with buds covered by the stroma and pyrenoc i ie fungus 
Fic. 3. Lower — hand bud of Fig. 2 more highly ae. shewing the ostioles 
x of the pyrenocarps. 
Fic. 4. Section across an attacked bud shewing the intercellular strands of hy hie, 
e quadrangular patches of brown, collapsed cortical cells with hollow 
eae in the middle, and the black stroma and pyrenocarps on the 
tside 
ou 
Fic, 5. Asci of central pyrenocarp of Fig. 4 more highly magnified. 
