Perichaena corticalis var. affinis G. Lister, 1911

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

Perichaena corticalis var. affinis G. Lister , in Lister, Monogr. mycetozoa, ed. 2, 251. 1911

= Perichaena chrysosperma (Curr.) Lister, Monogr. mycetozoa, ed. 1, 196. 1894

— Lectotypus (designated here): UNITED KINGDOM. England, Yorkshire , Aldborough, 54.091ºN 1.381ºW, Aug 1903, J. Petch ( BM 3138 !, BM001062133 + one slide BM s.n., 1, BM001223771 ) . Syntypus: UNITED KINGDOM. England, Essex, Alresford, Suncraton Hants , 51.8492ºN 1.0022ºE, 13 Jun 1902, W.L.W. Eyre ( BM 3137 !, BM001062132 ) . Syntypus: PORTUGAL. Lisbon, collegio di Campolide, 38º43’59”N 9º09’38”W, Jun 1905, C. Torrend ( BM 3139 !, BM001062134 ) .

BM 3138 / Perichaena corticalis (Batsch) Rost. / var. affinis Lister / Aldborough, Yorks, Aug. 1903, leg. J. Petch./ BM001062133 + one slide BM001223771. BM 3137 Perichaena corticalis / (Batsch) Rost./ var. affinis Lister / Suncraton (Alresford) Hants, 13.6.1902 / leg. Rev. W.L.W. Eyre/ BM001062132. BM 3139 / Perichaena corticalis (Batsch) Rost. / var. affinis Lister / Near Lisbon (Collegio di Campolide), 6.1905/ leg. C. Torrend/ BM001062134.

NOTES: Lister (1911: 252) pointed out that this variety was known from “Alresford, Hants. (BM 3137); Aldborough,

Yorks. (BM 3138); Portugal (BM 3139)”. In BM there are 3 collections (BM 3137, BM 3138, BM 3139) that are mentioned in the publication and so syntypes. Of these we designate BM 3138 as the lectotype as it is in the best condition, has notes and illustrations in the notebook XXI: 102–102 A and a slide preparation (1). The variety is currently considered to be a synonym of P. chrysosperma (Curr.) Lister, and Gulielma Lister herself lists it thus in the third edition of the monograph ( Lister 1925) .