358 Report oF THE HorTICULTURIST OF THE 
Another species, NV. ditessima, is the common canker-producing 
fungus of the orchard trees in many parts of Kurope. Neither of 
the species is sufficiently abundant in the orchards of the United 
States to be regarded as a pest. 
The illustration in Plate XX XIII, fig. 2, is from a photograph 
of one of a few quince tree limbs attacked by NV. cinnabarina that 
were found in the quince orchard of T. C. Maxwell and Brothers, 
Geneva, N. Y. | 
ACKNOWLEDGMENTS. 
It is with pleasure that I acknowledge my indebtedness to 
Prof. Beach, at whose earnest request this work was undertaken, 
and to whose kind consideration its completion was made pos- 
sible. To Dr. Thaxter I am indebted for advice on the question 
of nomenclature and to Mr. Ellis for the determination of species. 
EXPLANATION OF PLATES. 
Puate XXVIII. Fig. 1—A cankered apple tree limb, wood 
exposed at a and white fruiting bodies 
of Schizophylum commune fr. are con- 
spicuous on the dead bark. A canker of © 
more recent formation is shown at b. 
Fig. 2.—The same limb as in Fig. 1 with the 
dead bark removed. 
. Fig. 3.—A larger view of the small canker 
shown at b. The surface rs thickly dotted 
with pycnidia. 
Fig. 4.—Small section of dead bark from 
canker in Eig. 8 showing pycnidia natural 
size. 
PrateE XXITX.—Different forms of cankers. Fig. 1 shows lumb 
that for more than six feet is covered with 
rough bark, or scars where bark has become 
detached; fungus has reached cambium at a. 
