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R.F. Scharpf's Images

Organization: USDA Forest Service
Unit: Rocky Mountain Forest and Range Experiment Station
Country: United States
5 Images of 4 Subjects View Subject List View Image Details View Thumbnails

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Image Subject Name Scientific Name Description
1473124 incense cedar broom rust Gymnosporangium libocedri sporophores; on 4/1/1964 in California
1473128 fir dwarf mistletoe Arceuthobium abietinum midget infestation:  infection is young, first year shoot formation; 4/1/1964
1473126 Pacific mistletoe Phoradendron villosum 3/1/1964
1473127 Pacific mistletoe Phoradendron villosum view of haustorium;  3/1/1964
1473125 annosum root disease Heterobasidion annosum cambial symptoms on pine; 7/1/1964

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