Observation 97658: Sphaerophorus venerabilis Wedin, Högnabba & Goward
When: 2012-06-17
Who: BlueCanoe
No herbarium specimen

Notes: Ubiquitous on the bark of conifers in an old-growth forest of western hemlock, Pacific silver fir, and Alaska yellow-cedar.

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Eye3 = Observer’s choice
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Yes, that’s the paper
By: Jason Hollinger (jason)
2012-06-23 14:00:30 PDT (-0700)

Ignore my summary and pay attention to them, just in case I misremember any details. :)

By: BlueCanoe
2012-06-23 13:37:05 PDT (-0700)

I just read Wedina, Högnabba, & Goward 2009, which helps to clarify the difference between S. tuckermanii and S. venerabilis.

This isn’t a clear case
By: Jason Hollinger (jason)
2012-06-20 00:04:17 PDT (-0700)

I suspect S. venerabilis. The distinguishing characters are:

1. venerabilis has dimpled/wrinkled main branches, tuckermanii’s are smooth and terete
2. tuckermanii has dense clumps of fine terminal branchlets, venerabilis has fewer and less clearly differentiated
3. venerabilis usually has more abundant black pycnidia

Yours doesn’t have the dense fine terminal branchlets typical of tuckermanii, and you might be able to see some indentation in some of the main branches. But it’s hardly obvious. This is certainly the correct habitat for venerabilis.

Created: 2012-06-17 21:42:00 PDT (-0700)
Last modified: 2012-06-20 06:17:02 PDT (-0700)
Viewed: 36 times, last viewed: 2016-10-27 06:25:01 PDT (-0700)
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