Observation 165067: Cyathus striatus (Huds.) Willd.

Proposed Names

31% (2)
Used references: Arora, Mushrooms Demystified. The tufted hairs on the next exterior; the charcoal-gray appearance overall; relatively thick-walled nest; and lighter u edge may define this species in the future. Some of the best photography I’ve seen.

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Eye3 = Observer’s choice
Eyes3 = Current consensus


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Bird Nests
By: Danny Newman (myxomop)
2015-07-22 02:49:33 CDT (-0400)

You’ll want a copy of Brodie’s “The Bird’s Nest Fungi” if you want to really get to the bottom of these. Their taxonomy is complicated by any standard. Pay particular attention to groups VI (C. poeppigii) and VII (C. striatus), which is Brodie’s interpretation of Tulasne’s Eucyathus and Olla sectional grouping from 1844. Together, they contain roughly 20 species, all of whom possess peridia which are some degree of striate (internally and/or externally) and hairy.

As the book was published in 1975, you’ll also need to consider whatever Cyathus revelations and revisions have come about in the past 40 years, including, but not limited to, the description of new species since the time of Brodie’s book.

Suffice it to say, Mushrooms Demystified will, as usual, only get us so far.

Daniel, after reviewing this collection…
By: Drew Parker (mycotrope)
2015-07-22 02:39:09 CDT (-0400)

I don’t think it is C. helenae for the following reasons.

C. helenae is known from alpine or dry habitats. The habitat where these were found was neither.

C. helenae’s nest described as 0.5-0.6 cm diam. × 0.7 tall. This collection, even dried, is 0.7-0.8 cm diam. and from 1.0-1.4 cm tall which fits C. striatus.

Spores were shaped and sized more like C. striatus (elliptical) than C. helenae (oval to round).

It’s difficult to find photos of verified C. helenae on the web to get a clear idea of the nuances of how the hairs look on the exterior and subtle color differences.

Created: 2014-05-11 21:12:36 CDT (-0400)
Last modified: 2015-07-22 02:42:18 CDT (-0400)
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