Observation 14432: Bremia lactucae Regel
When: 2008-11-20
No herbarium specimen

Images

29657
10X magnification. Stained with lactophenol blue.
29658
40X magnification. Stained with lactophenol blue.
29659
4X magnification. Stained with lactophenol blue.
29660
10X magnification. Stained with lactophenol blue.

Proposed Names

78% (1)
Eye3 Eyes3
Recognized by sight: In a family of obligate vascular plant parasites, Peronosporaceae, this geneus is found growing on the underside of lettuce leaves. Discoloration visible from the top and eventual wilt. Underside of leaf has Thin white powder to the naked eye which is the signature that gives this family it’s common name of Downy mildews.
Used references: Alexopoulos, C.J. “Intorductory Mycology”. 2002 John Wiley & Sons
Based on microscopic features: Lemon shaped conidia, Dichotomously branched conidiophore,

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Eye3 = Observer’s choice
Eyes3 = Current consensus

Comments

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Great shots!
By: Dan Molter (shroomydan)
2008-11-21 11:15:58 CST (-0600)

Nice microscopy work!

Created: 2008-11-20 16:15:28 CST (-0600)
Last modified: 2008-11-20 16:15:28 CST (-0600)
Viewed: 444 times, last viewed: 2016-11-09 01:46:04 CST (-0600)