Observation 74033: Thuemenella cubispora (Ellis & Holw.) Boedijn

Notes:
This was a single specimen on the underside of an oak branch. I thought it was a hypocrea sp. though the stroma seemed rather convoluted in shape. The 8 ascospores to an ascus was distinctive. Apparently, this fungus is in the Xylariaceae and not in the Hypocreaceae.

Species Lists

Images

162905
fresh stroma
162906
162907
ascus in H20 mount
162908
ascus in melzer’s

Proposed Names

88% (2)
Eye3 Eyes3
Used references: The Fungi an Advanced Treatise Vol. 4a. Ainsworth,et al.
Thuemenella and Sarawakus. Mycologia 84(1), 1992 pp.26-40
Based on microscopic features: Asci 8-spored with long tapering stipe. Ascospores elongate sub-angular with the last spore in the ascus being slightly longer and tapered than the others. Green ascospores with two guttules. Smooth but crumpled, which is not so apparent in h20 mounts. Middle spores average 7 × 5 microns

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Eye3 = Observer’s choice
Eyes3 = Current consensus

Comments

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Great observation!
By: Christian (Christian Schwarz)
2011-08-17 07:11:22 PDT (-0700)

Created: 2011-08-15 19:09:26 PDT (-0700)
Last modified: 2011-08-18 06:07:26 PDT (-0700)
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