Part of the fungal survey of the Boston Harbor Islands, organized by Danny Haelewaters. Specimen to be deposited at the Farlow Herbarium, Harvard.

Scale bars: a, 3 mm; b & c, 1 mm; d–g, 10 µm.

The anamorph is present in the deep clefts between perithecia, and is clearly a Geniculosporium, with typically anamorphic characteristics of subfamily Xylarioidea (which also includes Xylaria; the other subfamily, Hypoxyloidea, includes Hypoxylon and Annulohypoxylon). The small, reniform ascospores are distinctive, if non-descript.

I’m not 100% certain of this ID, but I’m not really sure what else it could be. Open to other ideas/suggestions.

Species Lists



Proposed Names

54% (1)
Used references: Ju, Y. M., & Rogers, J. D. (2002). The genus Nemania (Xylariaceae). Nova Hedwigia, 74(1-2), 75-120.
Based on microscopic features: Ascospores: 8.5–9 x 3–5 µm; ascus apical plug 1.5 × 1.5 µm
Based on chemical features: No KOH extractable pigments

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= Observer’s choice
= Current consensus


Add Comment
Thanks Danny!
By: Roo Vandegrift (Werdnus)
2017-02-22 00:54:54 CST (-0600)

Nothing fancy — just my new iPhone 6 through the eyepiece with the optical micrometer, and cobbled together in GIMP. I wonder if Björn uses some fancy software?

nice work Roo!
By: Danny Newman (myxomop)
2017-02-21 19:39:29 CST (-0600)

out of curiosity, what do you use to create these elegant scalebar-ed plates?