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Joseph O'Brien's Images

Title: Plant Pathologist
Organization: USDA Forest Service
Unit: Forest Health Protection
Country: United States

Joe is a plant pathologist with the U.S. Forest Service in St. Paul, Minnesota. in addition to photography, his major interests include tree diseases in forests, woodlands and urban areas, hazard tree identification and mitigation, and mycology. Joe is a graduate of the University of Michigan (B.S. Forestry and M.S. Forest Pathology) and the University of Minnesota (Ph.D. Plant Pathology), and currently works at the Northern Research Station on the University of Minnesota's St. Paul campus.
Remove Filters: Agaricales(X) Fruiting Bodies(X) Miscellaneous Forestry(X)
62 Images of 27 Subjects View Subject List View Image Details View Thumbnails

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Subject Scientific Name Images
abortive Entoloma Entoloma abortivum 4
Agaric mushroom Macrolepiota procera 1
Amanita mushroom Amanita spp. 3
Armillaria root rots Armillaria spp. 3
bird's nest fungi Cyathus striatus 3
cleft-foot amanita Amanita brunnescens 1
common bird's nest fungi Crucibulum laeve 1
destroying angel Amanita virosa 1
false parasol or green-spored parasol Chlorophyllum molybdites 1
fly agaric Amanita muscaria 11
golden pholiota Pholiota aurivella 1
inky cap Coprinus quadrifidus 1
mock oyster Phyllotopsis nidulans 2
oyster mushroom Pleurotus spp. 1
parasol mushroom Lepiota spp. 1
powdery piggyback Asterophora lycoperdoides 3
puffball Lycoperdon pyriforme 4
purple-spored puffball Calvatia cyathiforme 1
righteous red waxy cap Hygrocybe coccinea 2
Russula mushroom Russula spp. 1
Shaggy mane Coprinus comatus 10
sharp-scaly pholiota Pholiota squarrosoides 1
tawny grisette Amanita fulva 1
velvet foot Flammulina velutipes 1
waxy cap mushrooms Hygrocybe spp. 1
Xeromphalina campanella Xeromphalina campanella 1
yellow spindle coral Clavulinopsis fusiformis 1

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