Observation 211925: Craterellus sphaerosporus (Peck) comb. prov.
When: 2015-08-04
Collection location: Casco, Maine, USA [Click for map]

Notes: Growing out of well-decayed, mossy conifer wood near Fagus grandifolia, Carya sp., Pinus strobus and Quercus sect. Lobatae. Young caps brown. Basal mycelium white. Mature specimens with a cap 4.6 cm wide and a total height of 6.2 cm. Immature specimen pictured with a cap 2.6 cm wide and a total height of 5.6 cm.


Young fruiting body?
Spores in cap segment i 5% KOH under 40x lens.

Proposed Names

46% (2)
Based on microscopic features: spores subglobose
21% (3)
Recognized by sight

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Eye3 = Observer’s choice
Eyes3 = Current consensus


Add Comment
Updated with basidiocarp dimensions.
By: Django Grootmyers (heelsplitter)
2017-02-08 21:41:18 CET (+0100)
I sent the specimens to Patrick Leacock
By: Django Grootmyers (heelsplitter)
2017-02-08 21:11:43 CET (+0100)

I should have done thorough spore measurements before sending but they’re in good hands now.

The one spore that is clearly seen…
By: Dave W (Dave W)
2017-02-08 14:15:53 CET (+0100)

appears to show Q~1.3. This would place this spore on the border between categories “broadly ellipsoid” and “ellipsoid” as defined on the Amanita Studies website. http://www.amanitaceae.org/?How%20To%27s&howto=15
C du Q reports tubaeformis spore dimensions with the lower range of Q~1.33. I think it would be useful to have info for a few more spores, as sometimes a spore doesn’t properly align so that it is perfectly viewable in max length profile.

Now that I look at it again
By: Django Grootmyers (heelsplitter)
2017-02-02 07:25:43 CET (+0100)

the spores do look subglobose rather than elliptical.

Created: 2015-08-04 23:21:54 CEST (+0200)
Last modified: 2017-02-08 21:40:53 CET (+0100)
Viewed: 120 times, last viewed: 2017-03-06 15:54:35 CET (+0100)
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