菌体稠密地长满了一小块高度局限的特化的基质上.A highly localized, specialized piece of substrate is densely overgrown.这种现象在许多特化的 虫媒花 中较常见,尤其是通过蜜蜂传粉的花.It helps to promote cross - pollination and is often combined with self - incompatibility.七鳃鳗...