Observation 91096: Scutellinia scutellata group (Site ID) (Scutellinia)

When: 2012-03-26

Collection location: Bon Tempe Reservoir, Marin Co., California, USA [Click for map]

Who: Ron Pastorino (Ronpast)

No specimen available

These were very small, less than 4.5 mm across.
They were growing on a old log but on top of a reddish substance which may be a mold. When I washed a specimen with Congo red to look for spores, I found many small spores, ~ 6.5 X 5 microns, as well as a few large, more typical S. scutellata spores, ~ 19 X 14 microns.

Species Lists


Spore in Congo red @ 1000X.
Spores, probably from substrate, in Congo red @ 1000X.

Proposed Names

85% (1)
Used references: Beñat’s comments at Observation 26456: S. scutellata is a name commonly adopted since several years all around the world and given on a lot of photos on forum, on a lot of herbarium exsiccata without scopic studies. In fact, I have seen typus and a lot of collections, I have seen DNA results and I continue to send specimens for DNA study. And globally, the results are : the most common species on wood in the world is S. crinita (even in North America, I have study a lot of collections from US) and S. scutellata is a great complex but, often, rare species. So, give the name scutellata is an error at 99%. In fact, today, I don’t know the borders of this species and I’m unable to put this name on a collection. I call it simply “S. scutellata complex”. (emphasis added)

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= Observer’s choice
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