Ceratocystis

• 长喙壳属

Ceratocystis的用法和样例：

例句

1. Holmes crossed two compatible races of ceratocystis ulmi, the causal agent of Dutch elm disease.
   霍姆斯曾把荷兰榆病害的致病因子，长喙壳的两个亲和小种杂交。