Observation 99546: Cyathus sect. Eucyathus

Proposed Names

-7% (3)
Used references: Arora, Mushrooms Demystified. Distinctive radially striate edge of “nest”, and habitat on dung.
30% (2)
Recognized by sight
28% (1)
Recognized by sight
57% (1)
Recognized by sight

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Eye3 = Observer’s choice
Eyes3 = Current consensus


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By: Danny Newman (myxomop)
2012-07-10 21:14:13 CDT (-0400)

of these striate, Neotropical Cyathus must fall into one of these two groups:

Poeppigii group: Species with plicate internal peridial walls, hairy to shaggy outer walls, dark to black peridioles, and large, roughly spherical or ellipsoidal spores.
C. poeppigii, C. crispus, C. limbatus, C. gayanus, C. costatus, C. cheliensis, C. olivaceo-brunneus

Striatus group: Species with plicate internal peridia, hairy to shaggy outer peridia, and mostly elliptical spores.
C. striatus, C. annulatus, C. berkeleyanus, C. bulleri, C. chevalieri, C. ellipsoideus, C. helenae, C. montagnei, C. nigro-albus, C. novae-zeelandiae, C. pullus, C. rudis

Several references for the region claim that C. limbatus is the most common (though not necessarily the only) internally striate, externally hairy Cyathus encountered in Latin America. Like most things, it will probably take microscopy to make any certain claims.

It’s probably not C. striatus, as that sp. is temperate.

As a side note, I would caution you, Dan, against using a book written primarily for the Western US in identifying Panamanian fungi. It may help you get to genus, but even then only on occasion. Forget getting to sp.

C. limbatus
By: Daniel B. Wheeler (Tuberale)
2012-07-09 12:06:27 CDT (-0400)

has been suggested. Not an exact match, I think. This obs. appears dark metallic on the nest rim. C. limbatus is striate, but has alternating light and dark striations, and generally without a metallic sheen.

By: Daniel B. Wheeler (Tuberale)
2012-07-08 18:51:03 CDT (-0400)

In Arora’s Mushrooms Demystified, p. 780, both C. stercoreus and C. striatus on dung (coprofilo) or mulch. C. stercoreus without striations (lines) on the nest edge, C. striatus with striations (lines), according to Arora. Otherwise they are similar in substrate and stature.

Here is a link for Cyathus striatus on Mushroom Observer:

Here is link for Cyathus stercoreus:

By: Eduardo A. Esquivel Rios (Eduardo27)
2012-07-08 18:00:32 CDT (-0400)

Bueno, como el C. stercoreus solo crece en el estiercol , y este se encontro en estiercol de vaca..al menos que el C. striatus tambien sea coprofilo..

Created: 2012-07-08 15:06:33 CDT (-0400)
Last modified: 2013-07-25 02:35:50 CDT (-0400)
Viewed: 128 times, last viewed: 2018-04-21 12:56:23 CDT (-0400)
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