Observation 74148: Erysiphe platani (Howe) U. Braun & S. Takam.

When: 2011-08-17

Collection location: Davis, California, USA [Click for map]

Who: Byrain

No specimen available

Notes:
Growing on Platanus racemosa (California sycamore) leaves still attached to the tree, it was on many leaves. Some kind of slime mold?

Images

163270
163271
163272
163290

Proposed Names

-54% (4)
Recognized by sight: Better name then fungi sp I guess…
56% (2)
Recognized by sight: Maybe a powdery mildew
62% (3)
Eye3 Eyes3
Recognized by sight: Dense white powdery mildew on Platanus
Based on microscopic features: Reticulate spores, couldn’t find cleistothecia/ cleistothecium

Please login to propose your own names and vote on existing names.

Eye3 = Observer’s choice
Eyes3 = Current consensus

Comments

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By: damon brunette (damonbrunette)
2011-08-20 21:22:52 CDT (-0400)

to a government sponsored site that has tree diseases. Most likely would need a scope in the end anyway.

Thanks for the correction damon
By: Byrain
2011-08-20 21:20:35 CDT (-0400)

Any ideas on how to narrow this down further?

Spores pics + measurements.
By: Byrain
2011-08-18 05:29:40 CDT (-0400)

The spores are textured (For lack of a better term) and I made 16 measurements:

L x W

35 × 20
38 × 21
40 × 20
40 × 21
40 × 22
40 × 24
41 × 24
42 × 23
43 × 22
43 × 22
43 × 24
43 × 24
44 × 21
45 × 21
45 × 23
46 × 20

Is there any other info I can collect to better complete this observation?

Created: 2011-08-17 20:34:59 CDT (-0400)
Last modified: 2012-04-05 04:41:09 CDT (-0400)
Viewed: 138 times, last viewed: 2017-12-10 01:36:51 CST (-0500)
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