2017 THE GREAT LAKES BOTANIST 233

NOTEWORTHY COLLECTIONS A NEW SLIME MOLD FOR OHIO

Michael A. Vincent W.S. Turrell Herbarium Department of Biology Miami University Oxford, OH 45056 USA [email protected]

Physarum gyrosum Rostafinsky Physaraceae

Significance of the Report. This is the first report of the species for the state of Ohio. Previous knowledge. Physarum gyrosum is a widespread slime mold that is known from Europe, Asia, Africa, South America, Pacific islands (Hawaii, New Zealand), Australia, and North America (GBIF 2016; Ing 1999; Liu et al. 2013; Yamamoto 1998 ). In the continental United States, the species is known from at least California, Colorado, Florida, Illinois, Indiana, Iowa, Kansas, Louisiana, Maine, Maryland, Massachusetts, Mississippi, Nebraska, New Hampshire, New York, North Carolina, North Dakota, Pennsylvania, Virginia, and Wyoming (GBIF 2016; Hagelstein 1944; MYCOPORTAL 2016). The species is not listed in any work on slime molds for Ohio (Fullmer 1921; Keller and Braun 1999). Discussion. The placement of this species has varied from treatment to treat - ment of slime molds. Physarum gyrosum was first described by Rostafinsky in 1874 (Rostafinsky 1874–1876) from specimens from Europe. Lister (1894) first placed the species in synonymy under Fuligo septica Gmelin, but later (Lister and Lister 1902) confirmed the distinct nature of the species. Among treatments for slime molds in North America, Macbride (1922) placed P. gyrosum in syn - onymy under P. bethelii (Macbride) Lister in one place, while recognizing it as distinct elsewhere in the same publication. Hagelstein (1944) and Martin and Alexopoulos (1969) recognized the species as distinct. It has also been treated as a species of Fuligo , F. gyrosa (Rostaf.) E. Jahn (Lado 2001). Most recently, how - ever, the species has been maintained as a species in the genus Physarum (Lado 2001; Neubert et al. 1995; Stephenson 2003). In Ohio, the several treatments of slime molds for the state (Fullmer 1921; Keller and Braun 1999) do not include P. gyrosum as a part of the myxomycete biota. Diagnostic Characters. The plasmodiocarps of this species are densely crowded and clumped in ash-grey masses, 2–3 mm high, 2–4 mm wide, with narrow sinuous ridges ca. 0.1–0.2 mm wide, which appear to form rings, nets, rosettes, or snakelike or wormlike patterns. The peridium is membranous and 234 THE GREAT LAKES BOTANIST Vol. 56 single, and covered with whitish or slightly reddish calcareous granular deposits. The capillitium is dense and delicate, with frequent white, sharp transverse crosswall-like nodes, as well as smaller fusiform nodes. The spores are dark brown en masse , and faintly spinulose (Martin and Alexopoulos 1969; Nan - nenga-Bremekamp 1991; Neubert et al. 1995). Specimen Citation. Ohio. Butler County: Oxford, Miami University campus, Upham Hall courtyard. Base of dead Magnolia macrophylla Michx., with Co - prinellus disseminatus (Pers.: Fries) J. E. Lange, mosses, and bare soil. 39.508552°N, –84.733215°W, 276m. August 18, 2016. Vincent 17611 (MU).

LITERATURE CITED Fullmer, E. L. (1921). The slime molds of Ohio. Ohio Biological Survey Bulletin 11. 3(1): 1–72. GBIF Secretariat: GBIF Backbone Taxonomy. (2016). doi:10.15468/39omei. Available at http://www.gbif.org/species/3214537 (Accessed December 2, 2016). Hagelstein, R. (1944). The Mycetozoa of North America. The author, Mineola, New York. Ing, B. (1999). The myxomycetes of Britain and Ireland: An identification handbook. Richmond Publishing Co., Slough, England. Keller, H. W., and K. L. Braun. (1999). Myxomycetes of Ohio: Their systematics, biology, and use in teaching. Ohio Biological Survey Bulletin New Series 13(2): 1–182. Lado, C. (2001). Nomenmyx, a nomenclatural database of Myxomycetes. Cauadernos de Trabajo de Flora Micológica Ibérica, 16. Consejo Superior de Investigaciones Cintífica, Real Jardín Botanico, Madrid, Spain. Lister, A. (1894). A monograph of the mycetozoa. British Museum (Natural History), London. Lister, A., and G. Lister. (1902). Notes on Mycetozoa. Journal of Botany, British and Foreign 40: 209–218, Plate 438. Liu, C.-H., J. H. Chang, and F.-Y. Yeh. (2013). Myxomycetes of Taiwan XXIV. The genus Physarum . Taiwaniana 58: 176–188. Macbride, T. H. (1922). The North American slime-moulds. MacMillan, New York, N.Y. Martin, G. W., and C. J. Alexopoulos. (1969). The myxomycetes. University of Iowa Press, Iowa City. MYCOPORTAL. (2016). Mycology Collections data Portal. Available at http://mycoportal.org/ portal/index.php (Accessed December 2, 2016). Nannenga-Bremekamp, N. E. (1991). A guide to temperate myxomycetes. (English translation of De Nederlandse Myxomyceten, by A. Feest and Y. Burggraaf). Biopress Ltd., Bristol, England. Neubert, H., W. Nowotny, K. Baumann, and H. Marx. (1995). Die Myxomyceten Deutschlands und des angrenzenden Alpenraumes unter besonderer Berucksichtigung Osterreichs. Band 2 Physar - ales. Karlheinz Baumann Verlag, Gomaringen, Germany. Rostafinsky, J. (1874–1876). S Åluzowce [Mycetozoa] monografia. Pamie çtnik Towarzystwa Nauk ScÅ is ¬ych w Paryz u≥ 5(4): 1–215 (1875), 6(1): 217–432 (1875), Dodatek [Appendix] 8(4): 1 –43 (1876). Stephenson, S. L. (2003). Fungi of New Zealand. Volume 3: Myxomycetes of New Zealand. Fungal Diversity Press, Hong Kong. Yamamoto, Y. (1998). The myxomycete biota of Japan. Toyo Shorin Publishing Co., Tokyo, Japan.