Tag Archives: western gall rust fungus

Western Gall Rust Fungus

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The western gall rust fungus (Endocronartium harknessii) induces globular, woody stem galls on several pine species throughout the West. The pictured galls infected a ponderosa pine (Pinus ponderosa) growing near the shore of Baum Lake (Lassen County CA). The galls … Continue reading

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