Verrucaria koerberi Hepp, Flechten Eur. 692, 1860
publication ID |
https://dx.doi.org/10.3897/mycokeys.72.56223 |
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https://treatment.plazi.org/id/A350DDF5-3AED-506F-8B28-62C2B66F4E3C |
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scientific name |
Verrucaria koerberi Hepp, Flechten Eur. 692, 1860 |
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Verrucaria koerberi Hepp, Flechten Eur. 692, 1860
Type.
[Germany] an Dolomitfelsen in Laubwäldern bei Eichstätt (Baiern), F. Arnold, Hepp, Flechten Eur. 692 (UPS-L-069713!, syntype).
Description.
Prothallus not seen. Thallus white, endolithic to thinly epilithic. Perithecia 0.2-0.3 mm, 3/4-1-immersed, leaving deep pits in the rock, surrounded by a thalline collar, ca. 50-120 perithecia/cm2. Ostiole inconspicuous, dark, depressed, ostiolar depression up to 100 mm wide. Involucrellum apical, 40-70 mm thick, appressed to the exciple. Exciple 0.17-0.25 mm in diam., wall dark. Periphysoids ca. 30 × 1.5 mm. Ascospores 0-septate, (17-)18-21 × (7-)8 mm.
Notes.
This species differs from V. subtilis in smaller spores. The specimen H-NYL 7012 does not belong to the type material because it has too large spores (25-33 × 12-16 mm).
No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.
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