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    Root and Butt / Root and Stem Diseases (3)

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    Peronosporaceae (4)
    Pythiaceae (1)

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    Edward L. Barnard (14)
    USDA Forest Service - Region 8 - Southern Archive (10)
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Forestry: Conifer

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Subject Scientific Name Images
Phytophthora root and crown rots Phytophthora spp. 3
Phytophthora root disease of Port Orford cedar Phytophthora lateralis 3
Phytophthora root rot Phytophthora cinnamomi 63
Pythium diseases Pythium spp. 2
sudden oak death Phytophthora ramorum 3

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