Observation 86132: Trapelia coarctata (Turner ex Sm. & Sow.) M. Choisy
When: 2011-12-26
Who: zaca
No herbarium specimen

Notes: Growing on soil. Sharing the habitat with Collema tenax considered in Observation MO86125. These specimens were observed for the first time last summer and at the time they were sterile.
Average dimensions of spores:
Me = 23.9 × 11.4 µm ; Qe = 2.1 (N=45).

Proposed Names

29% (1)
Recognized by sight
58% (1)
Eye3 Eyes3
Based on microscopic features: The only species found that can live on soil and with spores of the dimensions obtained; moreover the asci are of Trapelia type.

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Eye3 = Observer’s choice
Eyes3 = Current consensus


Add Comment
That’s what I thought.
By: zaca
2012-09-21 14:00:04 PDT (-0700)

At the time I didn´t make the spot tests, but later I returned to the place and made the tests (see observation 110703). It seems that the result is another point in favour of the proposed classification.

Trapelia coarctata is a good idea
By: Jason Hollinger (jason)
2012-09-21 13:44:42 PDT (-0700)

The material I’ve seen in southern California has minute apothecia which turn quite strikingly red when wet (blackish when dry). Also, the crust is distinctly C+ pink (but fleeting).

Consider Sarcogyne
By: Jason Hollinger (jason)
2012-01-11 18:18:53 PST (-0800)

I saw something identical in southern California once: observation 7219

[edit] Oops! I didn’t see the spore size. That kind of rules out the polysporous genera, doesn’t it! :)

Created: 2012-01-11 14:43:49 PST (-0800)
Last modified: 2012-09-21 13:42:36 PDT (-0700)
Viewed: 96 times, last viewed: 2016-10-26 23:32:34 PDT (-0700)
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