[P]

De Bary, A., “Recherches sur les Champignons Parasites,” in “Ann. des Sci. Nat.” 4me sér. xx. p. 5; “Grevillea,” vol. i. p. 150.

[Q]

A. de Bary, translated in “Grevillea,” vol. i. p. 167; Tulasne, “Ann. des Sci. Nat.” 5me sér. (1866), p. 211.

[R]

Léveillé, J. H., “Organisation, &c., de l‘Érysiphé,” in “Ann. des Sci. Nat.” (1851), xv. p. 109.

[S]

Tulasne, L. R. and C., “Fungi Hypogæi,” Paris; Vittadini, C., “Monographia Tuberacearum,” Milan, 1831.

[T]

“A Currant Twig and Something on it,” in “Gardener’s Chronicle” for January 28, 1871.