Didymascella thujina; on Calocedrus
Snow felt; Neopeckia coulteri on pines
Snow felt; Herpotrichia nigra on various conifers except pines.
Needle Diseases: Didymascella, Davisomycella, Lophodermium, Rhytisma, Neopeckia, Herpotrichia.
Virgella and Lirula; Didymascella, Davisomycella, Lophodermium, Rhytisma, Elytroderma and Schirrhia
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Didymascella thujina; on Calocedrus |
Snow felt; Neopeckia coulteri on pines |
Snow felt; Herpotrichia nigra on various conifers except pines. |
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Davisomycella montana; causes chlorotic areas on the tips of needles in lodgepole pine. |
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Rhytisma acerinum; tar spot of maple; causes necrotic areas in big leaf maple |
Lophodermium pinastri; causes needle blight of ponderosa pine. |
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Rhadocline pseudotsugae; cause needle blight of Douglas fir; pictures show two rows of phacid-type apothecia on each side of needle. |
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