P. A. Saccardo. "Sylloge Discomycetum," in Sylloge Fungorum. Vol. viii. Padua, 1889.

R. Hartig. Text Book of Diseases of Trees. Roy. 8vo. London, 1894.

Geo. Massee. The Evolution of Plant Life, Lower Forms. 12mo. London, 1891.

Marshall Ward. Diseases of Plants. 12mo. Cuts. London, 1884.

A. De Bary. Recherches sur le Developpement de quelques champignons parasites. 8vo. Plates. Berlin, 1878-'94.


APPENDIX.