Cornuvia depressa Lister, J. Bot.

Lado, Carlos & Basanta, Diana Wrigley De, 2018, Typification of the myxomycete taxa described by the Listers and preserved at the Natural History Museum, London (BM), Phytotaxa 341 (1), pp. 448-450 : 448-450

Cornuvia depressa Lister, J. Bot. 29: 264. 1891

≡ Dianema depressum (Lister) Lister, Monogr. mycetozoa, ed. 1, 204. 1894

— Lectotypus (designated here): UNITED KINGDOM. England, Dorset, Lyme Regis, Ivy Hollow 50.725ºN 2.940ºW, 2 Dec 1890 , A.

Lister (one slide, BM s.n.!, 3, BM001089143). Isolectotypus: UNITED KINGDOM. England, Dorset, Lyme Regis, Ivy Hollow 50.725ºN 2.940ºW, 2 Dec 1890, A. Lister (one slide, BM s.n.!, 2, BM001089142 ) .

BM s.n. one slide 3/ Dianema / depressum Lis. / Ivy Hollow 2.12.90/ N.IV.p.37 A / BM001089143. BM s.n. one slide 2/ Dianema / depressum Lis. / spore of/ L. echinulatum / Ivy Hollow 2.12.90/ N.IV.p.37 A / BM001089142.

NOTES: In the description of this species Lister (1891: 264) mentions several collections “On dead ash-sticks, in a mixed wood, and on the Undercliff, Lyme Regis, Dec. 1890 ” and “In Broome’s collection, British Museum, there are eleven specimens of this species, as under: 1 named Reticularia umbrina , from Rudloc, Dec. 1843. 1 named Reticularia umbrina , from St. Catherines, Feb. 1852. 1 named Licea ?, from Batheaston, Dec. 1863. 1 named Physarum metallicum , from Batheaston, Jan. 1864. 7 named Lycogala epidendrum , from Batheaston, Mar. 1869.”. Of all these we only found two slides in BM (2, 3) from Ivy Hollow 2.12.90, and with reference to notebook IV: 37 A. We selected slide 3 as the lectotype, since slide 2 has spores of Lamproderma echinulatum mixed in it, and this is included in the comments of notebook IV: 37 Awhere the contents of both slides are noted and illustrated. Three years later, when Lister published the first edition of his monograph ( Lister 1894) , he placed his new species in the genus Dianema as Dianema depressum (Lister) Lister.