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Mushroom Observer Image 282438: Normandina pulchella (Borrer) Nyl.
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Mushroom Observer Image 272654: Scorias spongiosa (Schwein.) Fr
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Mushroom Observer Image 283411: Patellaria atrata (Hedw.) Fr.
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Mushroom Observer Image 171837: Sporormiella australis (Speg.) S.I. Ahmed & Cain
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Mushroom Observer Image 449591: Herpotrichia macrotricha (Berk. & Broome) Sacc.
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Mushroom Observer Image 638830: Nodulosphaeria revelstokensis Shoemaker
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Conidia (spores) of the deuteromycotan fungus, Alternaria alternata (FRIES,1832) KEISSLER,1912. The conidia are obclavate (shaped like a bowling pin) and form single file chains as seen here. The spores have both longitudinal and horizontal septae. Each conidium tapers into a narrow rounded protuberance. Alternaria digests cellulose and is commonly found on dead grasses. Some species are plant pathogens causing "early" potato and tomato blight and leaf rot. The Irish potato famine of 1845-1849 was due to inection by a different fungus, Phytophthora infestans which causes "late" blight.These specimens of A. alternata were found at the margins of a slow-moving freshwater stream in Boise, Idaho.Since A. alternata is terrestrial and not aquatic, the water was probably contaminated by airborne conidia.Phase contrast.
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Mushroom Observer Image 282439: Normandina pulchella (Borrer) Nyl.
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Mushroom Observer Image 27799: Scorias spongiosa (Schwein.) Fr
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Mushroom Observer Image 283412: Patellaria atrata (Hedw.) Fr.
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Mushroom Observer Image 171838: Sporormiella australis (Speg.) S.I. Ahmed & Cain
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Mushroom Observer Image 638837: Nodulosphaeria revelstokensis Shoemaker
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Conidia (spores) of the deuteromycotan fungus, Alternaria alternata (FRIES,1832) KEISSLER,1912. The conidia are obclavate (shaped like a bowling pin) and form single file chains as seen here. The spores have both longitudinal and horizontal septae. Each conidium tapers into a narrow rounded protuberance. Alternaria digests cellulose and is commonly found on dead grasses. Some species are plant pathogens causing "early" potato and tomato blight and leaf rot. The Irish potato famine of 1845-1849 was due to inection by a different fungus, Phytophthora infestans which causes "late" blight.These specimens of A. alternata were found at the margins of a slow-moving freshwater stream in Boise, Idaho.Since A. alternata is terrestrial and not aquatic, the water was probably contaminated by airborne conidia.DIC
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Mushroom Observer Image 282440: Normandina pulchella (Borrer) Nyl.
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Mushroom Observer Image 27800: Scorias spongiosa (Schwein.) Fr
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Mushroom Observer Image 283413: Patellaria atrata (Hedw.) Fr.
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Mushroom Observer Image 171839: Sporormiella australis (Speg.) S.I. Ahmed & Cain
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Mushroom Observer Image 708489: Montagnula mohavensis A.W. Ramaley & M.E. Barr
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Mushroom Observer Image 282441: Normandina pulchella (Borrer) Nyl.
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Mushroom Observer Image 27802: Scorias spongiosa (Schwein.) Fr
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Mushroom Observer Image 283414: Patellaria atrata (Hedw.) Fr.
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Mushroom Observer Image 145858: Cucurbitaria berberidis (Pers.) Gray
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Mushroom Observer Image 708493: Montagnula mohavensis A.W. Ramaley & M.E. Barr
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Mushroom Observer Image 316685: Normandina pulchella (Borrer) Nyl.