Observation 96490: Wilsonomyces carpophilum
When: 2012-06-05
No herbarium specimen

Notes: I believe this is growing on English laurel (Prunus laurocerasus). Growing on one of my neighbor’s laurel bushes. I don’t much care for laurel except when it is flowering: the aroma of the flowers is similar to honey. I find the shrub invasive and a pain, second only to English ivy.

Species Lists

Images

225112
Damage to underside of laurel leaf: circular ruby red, with some blue or black around the edges.
225113
Surface damage of laurel leaf: extensive redding around infection site, as well as depressed leaf surface where infected.
225114
Close-up of underside of laurel leaf. Note the depressed areas where the fungus is growing (rube red, circular).
225115
Additional underside of laurel leaf. Note raised central infection sites.
225116
Surface of laurel leaf, showing extensive pink areas near original circular infection sites.

Proposed Names

57% (1)
Eye3 Eyes3
Used references: On-line references to “Shot-hole blight” on Prunus laurocerasus. While most references (OSU) had this on cherry (Prunus), apparently English laurel (Prunus laurocerasus) is close enough to be a host as well.

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Eye3 = Observer’s choice
Eyes3 = Current consensus

Comments

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Appears to be Wilsonomyces carpophilum
By: Daniel B. Wheeler (Tuberale)
2012-06-05 22:31:28 PDT (-0700)

also known as “Shotgun blight” and “Shot hole blight”. Several other scientific names are suggested, but seem to be the same fungus. Don’t know which the current preferred name is. This is simply one of several mentioned in the literature.

Created: 2012-06-05 18:49:36 PDT (-0700)
Last modified: 2012-06-05 22:29:32 PDT (-0700)
Viewed: 49 times, last viewed: 2016-10-26 19:14:35 PDT (-0700)
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