Physarum viride var. rigidum G. Lister, 2018

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

Physarum viride var. rigidum G. Lister , in Lister, Monogr. mycetozoa, ed. 2, 56. 1911

≡ Physarum rigidum (G. Lister) G. Lister , in Lister, Monogr. mycetozoa, ed. 3, 36. 1925

— Lectotypus (designated here): JAPAN. Kii Peninsula, Wakayama Prefecture, Tanabe, 33º44’N 135º23’E, on naked trunk of Punica granata , 22 Jun 1906, Kumagusu Minakata 51 ( BM s.n.!, KM 51 , BM001089731 + one slide, BM001089181 ) . Syntypus: JAPAN. Kii Peninsula , Isaida, underside fallen branches, 8 Jul 1905, Kumagusu Minakata 50 ( BM s.n.!, KM 50 , BM001095196 ) . Syntypus: JAPAN. Kii Peninsula, Wakayama Prefecture, Tanabe, 33º44’N 135º23’E, on naked branch of Punica granata , 18 May 1907, Tane Arimoto , KM 119 ( BM s.n.!, Myc. 103, BM001247139 ) . Syntypus: JAPAN. Kii Peninsula, Wakayama Prefecture, Tanabe, Nishinotani 33º44’N 135º23’E, on pine bark, 18 Jul 1908, Tominoshi Ogawa 165 ( BM s.n.!, Myc. 276, BM001247140 ) . Syntypus: JAPAN. Kii Peninsula, Wakayama Prefecture, Tanabe, 33º44’N 135º23’E, on rotting wood and Polystictus , 25 Jun 1909, Kumagusu Minakata 267 ( BM s.n.!, Myc. 328, BM001247141 ) . Syntypus: JAPAN. Kii Peninsula, Wakayama Prefecture, Tanabe, 33º44’N 135º23’E, on rotting wood and Polystictus , 26 Jun 1909, Kumagusu Minakata 268 ( BM s.n.!, Myc. 331, BM001247142 ) .

BM s.n. KM 51/ Physarum (viride)/ rigidum G. Lister / NXXV.11/ Myc. 103/ On naked/ trunk of/ Punica granata / Tanabe, Kii/ leg. K. Minakata/ June 22, 1906 / BM001089731 + one slide BM001089181. BM s.n. KM 50/ Physarum (viride)/ rigidum G. Lister /

underside fallen/ branches/ Myc. 120/ Isaida, Kii,/ leg. K. Minakata/ July 8, 1905 NXXV.9/ BM001095196. BM s.n. KM 119/ Physarum /(viride var.) rigidum/ NXXVII.45/ Physarum / Myc. 103. duplicate/ On naked branch of Punica granata / Tanabe Kii/ Very same spot as the last years gathering/ NXXV p. 11/ May 18 th, 1907 / leg. Mrs. Tane Arimoto/ BM001247139. BM s.n. KM 165/ Physarum / rigidum G. Lister NXXVIII. 115/ On pine bark./ Myc. 276/ Nishinotani,/ Isaida, Kii,/ leg. Tominoshi Ogawa,/ Kumagusu Minakata/ K. 165/ July 18, 1908 / Physarum (viride δ rigidum )/ G. Lister/ BM001247140. BM s.n. K 267/ Physarum (viride var.) rigidum/ G. Lister NXXX.135/ On rotting wood/ and Polystictus / Myc. 328/ Tanabe Kii/ leg. K. Minakata/ June 25, 1909 / Plasmodium yellow/ BM001247141. BM s.n. KM 268/ Physarum viride ( var. rigidum )/ rigidum G. Lister XXX. 134/ Myc. 331/ On rotting wood/ and Polystictus / same matrix as Myc. 328)./ leg. K. Minakata/ June 26, 1909./ Plasmodium milky-white./ BM001247142.

NOTES: Lister (1911: 56–57) commented “This variety has now been obtained from the West Indies, from Ceylon, and several times from Japan ”, and in the list of material studied although no particular collection is mentioned for the variety, Ceylon (K 1420) and Japan (BM 1989) are listed. There is a reference to Minakata (Bot. Mag. Tokyo 12: 318. 1908) in the description, but Kumagusu Minakata did not make the descriptions. The text is in Japanese and the translation is as follows “ P. viride Pers. var. rigidum List. , Nov. Var. Tanabe [Localty in Wakayama Pref.], Inari [Locality in Wakayama Pref.], Ceylon ”. In BM we did not locate BM 1989 but there are 6 boxes of Minakata’s (KM. 50, KM. 51, KM. 119, KM. 165, KM. 267, KM. 268) with the variety name . We designate KM 51 as the lectotype as it is in good condition and has a reference to notes in notebook XXV: 11 (K.M. 51, Myc. 103, 22.6.06). The other collections have notes in the following notebooks XXV: 9–10 (KM 50, Myc. 120, 8.7.05), XXV: 12 (KM 52, Myc. 106, 28.6.06), XXVII: 45, XXVIII: 115, XXX: 135 and XXX: 134. Gulielma Lister herself raised this variety rigidum (with rigid capillitium) to species rank in the 3rd edition of the monograph ( Lister, 1925) .