Exobasidium (genus)

Exobasidiales • Exobasidiomycetes • Basidiomycota • fungi • plant diseases • pests-diseases-weeds

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Exobasidium vexans symptoms on Camellia sinens (click on image to enlarge it)
Author(s): Jürgen Kranz
Source: Wikimedia Commons

gall of Exobasidium vaccinii on Rhododendron canescens leaf (click on image to enlarge it)
Author(s): David Stephens
Source: IPM Images

Exobasidium Woronin 1867

This genus of basidiomycetous plant pathogenic fungi is widely distributed and includes around 50 species. These cause deformations and galls on a variety of plants. The structures range from leaf blisters (right image) to conspicuous gall-like outgrowths from the leaves (left image). These form basidiospores and are usually hollow. The host range of the species is typically restricted. Exobasidium vexans is found in Asia, causing the white blister disease of tea.

Type species: Exobasidium vaccinii

Currently, the following species have been entered into the system:

• Exobasidium camelliae
• Exobasidium vaccinii
• Exobasidium vexans