dieback

Xylella fastidiosa bacteria and damage illustrations

Study sheet of Xylella bacterium and associated diseases and plant damage botanical illustration by Lizzie Harper

Xylella fastidiosa bacteria sketchbook sheet with notes

Bacterium of Xylella fastidiosa, this form showing long pilli (many have short or no pilli)

Oak sudden death Phytophthora ramorum fungi and algae pest on Oak tree Quercus

Oak spangle galls from wasp Tilia platyphyllos and Silk button galls from wasp Neuroterus numismalis on Oak leaf Quercus robu

Oak Quercus robur sketchbook page including flowers and young leaves

Spruce Bark beetle Ips typographus inset illustration against a background showing maternal and larval galleries in bark

Lawson’s Cypress Chamaecyparis lawsoniana pen and ink drawing of a mature tree

Spruce Bark beetle Ips typographus inset illustration against a background showing maternal and larval galleries in bark