canker
71bark canker — noun Etymology: bark (III) : any of various cankers of woody plants; specifically : a canker of rubber trees caused by a fungus (Phytophthora faberi) …
72crown canker — noun : canker disease of roses caused by an imperfect fungus (Cylindrocladium scoparium) …
73ear canker — noun Etymology: ear (I) : canker 7a …
74flax canker — noun 1. : heat canker of flax 2. or flax anthracnose : a cankered condition of flax caused by a fungus (Colletrotrichum linicolum) …
75perennial canker — noun : a canker that lives over from one season to the next; specifically : a serious disease of apples caused by a fungus (Gloeosporium perennans) and characterized by cankers on the trunk and limbs …
76poplar canker — noun : a branch or trunk canker of poplars especially damaging to the Lombardy poplar and caused by a fungus (Dothichiza populea) …
77tomato canker — noun : a bacterial canker of tomatoes caused by a spore forming bacterium (Corynebacterium micheganense) and characterized by elongated brown cankers on the stems and sudden wilting of nearly mature plants and by spotting of the maturing fruits …
78citrus canker — noun Date: 1916 a destructive disease of citrus caused by a bacterium (Xanthomonas axonopodis citri syn. X. campestris citri) that produces lesions on the leaves, twigs, and fruits …
79bacterial canker — Plant Pathol. a disease of plants, characterized by cankers and usually by exudation of gum, caused by bacteria, as of the genera Pseudomonas and Corynebacterium. * * * …
80brown canker — Plant Pathol. a fungous disease of roses, characterized by leaf and flower lesions, stem cankers surrounded by a reddish purple border, and dieback. [1825 35] * * * …
