Craterium leucocephalum var. rufum G. Lister, 1925

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

Craterium leucocephalum var. rufum G. Lister , in Lister, Monogr. mycetozoa, ed. 3, 78. 1925

= Craterium leucocephalum (Pers. ex J.F. Gmel.) Ditmar , in Sturm, Deutschl. Fl., Abt. 3, Die Pilze Deutschlands 1(1): 21. 1813 — Lectotypus (designated here): JAPAN. Toyama Prefecture, Etchű province, Tsukioka-mura , 36.63ºN 137.26ºE, 18 Jul 1916, Hisahiko Sasaoka ( BM 3987 !, BM001089742 ).

BM 3987 / Craterium leucocephalum / Ditm./ var. rufum G. Lister / Tsukioka-mura, Prov. Etchu./ Japan /leg. Hisahiko Sasaoka, 18.7.1916 / det. K./ BM001089742 [sheet label dated 3 FEB. 1927].

NOTES: Lister (1925: 79), commented “was found in large quantities by Mr. K. Minakata in July, 1916, in the province of Erchu, Japan.”. There is a small collection in BM ( BM 3987 ) of original material sent by Minakata, with 9 red sporocarps that we designate as the lectotype. There are no slides and no reference to notes. This variety no longer has taxonomic value .

Craterium rubronodum G. Lister, Trans. Brit. Mycol. Soc. 5: 74. 1915 [Nom. nov., based on Badhamia rubiginosa var. concinna G. Lister, 1913 , nom. nud., non Craterium concinnum Rex, 1893 ]

— Lectotypus (designated here): JAPAN. Kii Peninsula, Wakayama Prefecture, Tanabe , 33º44’N 135º23’E, on fallen leaves and dead wood on the ground, 3 Aug 1911, Kumagusu Minakata 298 ( BM s.n.!, Myc. 368, K.M. 298, BM001089856 + three slides BM s.n.!, K.M. 298, BM001089131 , BM001089132 , BM001089133 ) . Isolectotypus: JAPAN. Kii Peninsula, Wakayama Prefecture, Tanabe , 33º44’N 135º23’E, on dead wood and leaves, 3 Aug 1911, Kumagusu Minakata 298 ( BM 3983 !, BM001089855 ) .

BM s.n. K.M. 298/ Craterium rubronodum GL / Badhamia rubronodum / Myc. 368/ On fallen leaves &/ dead wood on the ground/ Tanabe, Kii/ leg. Kumagusu Minakata/ August 3, 1911 / plasmodium/ light primrose yellow/ than orange NXXXI.97. BM001089856/ “ Type collection” + three slides BM001089131, BM001089132, BM001089133. BM 3983, Craterium rubronodum / G. Lister/ Tanabe, Kii, Japan, on/ dead wood and leaves./ 3.8.1911./ leg. Kumagusu Minakata/ BM001089855 [sheet label dated 3 FEB. 1927].

NOTES: This species was based on Badhamia rubiginosa var. concinna G. Lister , but the name is considered as a nomen nudum by Yamamoto (1998: 388) due to the absence of a description. When G. Lister (1915a: 74) described the species Craterium rubronodum G. Lister , she clarified the status of Badhamia rubiginosa var. concinna G. Lister in litt. (see this taxon). She wrote: “Found in small quantity on dead bamboo leaves and rotting wood, on the ground, in company with Craterium concinnum , August, 1911. When I first examined this specimen two years ago I was struck with its resemblance to Badhamia rubiginosa both as regards the conspicuous columella and large rough spores. I wrote to Mr. Minakata suggesting that this gathering might be a variety of that species (see Minakata on Badhamia rubiginosa Rost. var. concinnum G. Lister in litt. Bot. Mag. Tokyo, XXVII., 408); but on re-examining the specimen I find that the mass of lime in the centre of the sporangium is not attached to the apex of the stalk as it is in B. rubiginosa and the lime-knots are too rounded and compact to belong to any Badhamia . Indeed the character of the capillitium, the lid-like cap to the sporangium, and the structure of the sporangium-walls are all in favour of its being placed in the genus Craterium .” In BM we found three slides with the number KM 298 and two boxes, the first numbered also KM 298 is designated the lectotype, and the second box BM 3983, that has the same data on the label, is almost certainly a duplicate. Another probable duplicate of this material is conserved in Showa Emperor’s collection of myxomycete specimens now in the National Science Museum, Tokyo ( TNS) ( Hagiwara 2005). In the notebook XXXI: 96–96A– 96B–97 there are comments and drawings of the lectotype, G.Lister commented on the Japanese specimen (K.M. 298) and named it “ Craterium rubronodum GL ” having first named it “[ Badhamia rubiginosa var. concinna Lister in litt. var. crateriformis see Bot. Magazin Tokio p.408 Sep. 1913]”. Part of the drawings are used for the illustration of the species Craterium rubronodum G. Lister (G. Lister, 1915a).