Adler, Deutsche ent. Zeitschr. xxi. 1877, p. 209.
Cameron, Brit. Phyt. Hym. Ray Society, i. 1882, p. 29, and ii. 1885, p. 218.
Cameron, op. cit. iv. 1893, p. 9.
Brit. Phyt. Hym. i. p. 27. Fletcher's record, referred to by Cameron, mentions N. miliaris, but this name was probably erroneous.
See Perez and Cameron, Tr. Nat. Hist. Soc. Glasgow, n.s. ii. 1889, p. 194.