Observation 97116: Cyathus striatus (Huds.) Willd.
When: 2012-06-11
(35.5618° -84.2371° 259m)
No herbarium specimen

Notes: On hardwood log.

Proposed Names

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Eye3 = Observer’s choice
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Comments

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By: Danny Newman (myxomop)
2014-01-06 23:08:28 CST (-0500)

The latest round of name proposals was undertaken due to the overlap in distribution shared by at least two other plicate-striate Cyathus species; C. helenae and C. annulatus, but the gun was admittedly jumped. Most of what’s being called C. striatus on MO is probably just that (Brodie repeatedly remarks on its pervasiveness throughout the temperate world). The question then becomes whether a careful appraisal of macrocharacters can reliably distinguish the three from each other.

C. annulatus is (or was in 1975) “only known from the Cypress Hills of Alberta, and is characterized by a deep brown ring which colours the inner surface of the lip of the fruit body and by the shape of the basidiospores.” (Brodie 1975)

C. helenae is said to be “smaller than most forms of C. striatus” and "is quite distinctive in the presence of tufted tomentum, lack of setae, and faint plication.(Brodie 1975) The known distribution, which was restricted to Rocky Mountain Park in Alberta and “dry areas of Idaho” in 1975, was significantly extended to no less than three localities in Mexico, both temperate and tropical, in 1988 and 2005, respectively.

Brodie, Harold J. The Bird’s Nest Fungi. Toronto: Toronto University Press, 1975. Print.


I’m in the process of updating the following list:

http://mushroomobserver.org/species_list/show_species_list/376

which will hopefully help with the much more daunting problem of differentiating between (sub)tropical species, of which there are over 20.

edit: it’s also worth mentioning that Brodie’s classification system is going out of style. Zhao et al. (2007) have come up with a three-group system based on molecular data which does not favor peridial striation/plication as an infrageneric delimiter (though it is still plenty valid as a species level character).

None that I know of
By: Byrain
2014-01-06 14:02:11 CST (-0500)

That’s why I asked. :)

Thanks for the explanations, hopefully myxomop can add where he was coming from too?

Well…
By: Douglas Smith (douglas)
2014-01-06 13:52:11 CST (-0500)

In the Italian book “Gasteromiceti epigei” by M. Sarasini, there are three species of Cyathus: C. olla, C. stercoreus, and C. striatus. That’s it for Europe at least. Not sure where this reducing things to section came from. Looks like the fuzzy outside and the striate inside, C. striatus is it. Is there another N. American source I should check also?

Temperate Cyathus species
By: walt sturgeon (Mycowalt)
2014-01-06 12:39:31 CST (-0500)

Cyathus striatus is the only striate one I am aware of…

What is wrong with Cyathus sect. Eucyathus ?
By: Byrain
2014-01-06 12:20:29 CST (-0500)

Is Cyathus striatus the only species that looks like this?

Created: 2012-06-11 22:14:05 CDT (-0400)
Last modified: 2014-01-06 23:31:12 CST (-0500)
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