Phytophthora spp exist worldwide. They are a devastating group of plant pathogens that cause disease in a wide range of agricultural, horticultural and ornamental plants.

More than 64 species of Phytophthora have been identified based on their morphological and physiological characteristics. In this database an attempt has been made to utilize the traditional keys for various species determination.

Asexual characters

Hyphal Swellings

Chlamydospore
Chlamydospores Production

Chlamydospores Average diameter

Sporangia
Nature of Papilla
L:B ratio

Caducity
Pedicel Length
Sporangiophore branching

Shape

Proliferation