Observation 200267: Symphytocarpus Ing & Nann.-Bremek.

When: 2015-03-07

Collection location: Pogonip Open Space Reserve, Santa Cruz, California, USA [Click for map]

Who: Thomas Laxton (Tao)

No specimen available

This was growing out of the end of a cut Umbellularia californica log.

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20X magnification. There are two peridia, a dark shiny crust covered by a transparent membrane.

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Eye3 = Observer’s choice
Eyes3 = Current consensus


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By: Thomas Laxton (Tao)
2015-03-11 04:02:41 CET (+0100)

The major differences between Stemonitis and Symphytocarpus is that the latter has peridia or outer skin that are usually persistent and covers the top of the sporocarps. There are a couple Stemonitis that also have peridia but those are are not persistent and usually only patches remain. The second difference from what I have observed is the Hypothallus or skin that the sporocarps grow from. The specimens I have seen have a long Hypothallus and looks like it slides down the surface of the substrate creating a shiny film above the sporocarps. That is visible in this and all of my observation of Symphytocarpus. Those observations are of specimens that have formed on the side of the substrate and that could be biased but none of the Stemonitis I have seen have this attribute not even the ones that have formed on the side of the substrate.

The species you are talking about have been moved to Stemonaria:

By: Danny Newman (myxomop)
2015-03-10 13:26:14 CET (+0100)

are those strands (technical term?) long enough to surpass the maximum dimensions for Stemonitis? are the two genera divided in any other way other than the length and/or droopiness of the sporangia?

Created: 2015-03-08 06:34:03 CET (+0100)
Last modified: 2015-03-25 03:17:49 CET (+0100)
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