Greville, “Sc. Crypt. Fl.” pl. 156.
Berkeley, in “Linn Trans.” xix. p. 37; Cooke, in “Technologist” (1864), p. 387.
Berkeley, M. J., in “Linn. Trans.” xix. p. 37.
Berkeley, M. J., in “Hooker, Flora Antarctica,” p. 147; in “Hooker’s Journ. Bot.” (1848), 576, t. 20, 21.
Vittadini, C., “Monographia Tuberacearum” (1831), pp. 36, &c.