Observation 105278: Sphaerellopsis filum (Biv.) B. Sutton
When: 2012-08-02
Who: Byrain
Herbarium specimen reported

Notes: Hyperparasite on the urediniospores from an unidentified rust fungus on a grass I think to be Leptochloa fascicularis.

Conidia 1-septate
Conidia range = 13 – 15 × 3 – 4 µ
Average conidia = 14.85 × 3.6 µ
Q range = 3.25 – 5
Average Q = 3.95
20 conidia measured.

Species Lists

Images

249573
Pycnidia, 400x, mounted in KOH, 2.44 µ divisions
249574
Pycnidia, 400x, mounted in KOH, 2.44 µ divisions
249575
Conidia, 1000x, mounted in KOH, 1 µ divisions
249576
Infected uredia
249577
Infected uredia

Proposed Names

85% (1)
Eye3 Eyes3
Recognized by sight
Used references: Microscopical observations of Sphaerellopsis filum, a parasite of Puccinia recondita – http://bit.ly/Pnw9e5
Hyperparasites attacking rust in Oklahoma – http://bit.ly/OsIf9h
Based on microscopic features

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Eye3 = Observer’s choice
Eyes3 = Current consensus

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Created: 2012-08-14 14:43:56 PDT (-0700)
Last modified: 2012-08-14 16:43:58 PDT (-0700)
Viewed: 144 times, last viewed: 2016-11-24 06:54:33 PST (-0800)
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