'This tree disease is caused by a fungus, Ophiostoma ulmi, that is spread by 2 species of bark beetles'
Dutch elm disease
BOTANY: This tree disease is caused by a fungus, Ophiostoma ulmi, that is spread by 2 species of bark beetles
This tree disease is caused by a fungus, Ophiostoma ulmi, that is spread by 2 species of bark beetles
This tree disease is caused by a fungus, Ophiostoma ulmi, that is spread by 2 species of bark beetles
BOTANY
Dutch elm disease
BOTANY