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Lamprospora ascoboloides Seaver
Mycologia 6: 10 (1914)
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Asci: 8-spored, spores uniseriate
Ascospores: globose, 13-15(-17) µm in diameter [Seaver 1914], 12-14 µm [Benkert 1987] and (14-)16-18 µm [including ornamentation, Wang & Kimbrough 1992], ornamentation consisting of often curved ridges 1.5-2 µm wide and 1-1.5(-2) µm high, ridges often with free ends (seaveri-pechnatzii-type), without additional warts
Host: a dicranelloid moss, probably Dicranella heteromalla
Infection: inducing spherical galls on the rhizoid, 40-80 µm wide, which are completely covered with a layer of hyphae
Habitat: on soil.
Distribution: Italy ?, United States (Connecticut, New York, and Virginia)
Note: The name L. ascoboloides was applied many times to collections with strong, curved ridges as ascospore ornamentation, but critical studies of these specimens always led to other identifications. For instance, L. ascoboloides in reports by Caillet & Moyne (1980) was later re-determined by Benkert (1987) as L. dicranellae. The description and illustrations of 'L. ascoboloides' by Schumacher (1993) also clearly show L. dicranellae. Revision of specimens in TRH indicated mostly L. dicranellae or rarely L. arvensis as well as several yet undescribed species. Medardi (2005) reported L. ascoboloides from Italy accompanied by Dicranella, Ditrichum, Riccia, and Anthoceros. Unfortunately, our investigation of MCVE 15993 resulted in no unambiguous observation of the infection but the host is most likely Dicranella sp. or Ditrichum sp. Therefore, the specimen could represent L. ascoboloides but without definite identification of the host, its identity remains unclear. Hopefully, future collections from both North America and Europe will shed light on this subject.
References:
- Benkert, D. 1987a. Beiträge zur Taxonomie der Gattung Lamprospora (Pezizales). - Zeitschrift für Mykologie 53: 195-271.
- Caillet, M. & Moyne, G. 1980. Contribution a l'étude du genre Octospora Hedw. ex S.F. Gray emend. Le Gal. especes a spores ornementées, globuleuses ou subglobuleuses. - Bulletin de la Société Mycologique de France 96: 175-211.
- Caillet, M. & Moyne, G. 1991. Clé de détermination du genre Octospora et des genres voisins. - Bulletin de la Société d'Histoire Naturelle du Doubs 84: 9-24.
- Dissing, H. 1981. Four new species of discomycetes (Pezizales) from West Greenland. - Mycologia 73: 263-273.
- Eckstein J., Vega M., Sochorová Z. & Janošík L. 2022. Lamprospora benkertii sp. nov., and an evaluation of Lamprospora spp. with seaveri-type ascospore ornamentation. - Mycotaxon 136: 693–717. DOI
- Medardi, G. 2005. Un raro Ascomycete reperito in Italia: Lamprospora ascoboloides Seaver. - Revista Catalania de Micologia 27: 93-98.
- Seaver, F. J. 1914. A preliminary study of the genus Lamprospora. - Mycologia 6: 5-24, plate 114. PDF
- Seaver, F. J. 1928. The North American cup-fungi (Operculates). - New York.
- Schumacher, T. K. 1993. Studies in arctic and alpine Lamprospora species. - Sydowia 45: 307-337.
- Wang, Y. Z. & Kimbrough, J. W. 1992. Monographic studies of North American species of Octospora previously ascribed to Lamprospora (Pezizales, Ascomycetes). - Special Publication no. 4, National Museum of Natural Science (Taiwan).
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