[1] See Angiospermæ.
[2] According to the recent investigations of Winogradsky some micro-organisms (Nitrifying-bacteria) can build organic from inorganic matter. Sachs’ hypothesis that the first organisms must necessarily have contained chlorophyll is therefore untenable.
[3] Myxogasteres, Engler’s Syllabus, p. 1.
[4] Acrasieæ and Plasmodiophorales, ibid.
[5] Myxophyceæ, Cyanophyceæ.
[6] The Bacteria are more usually included under Fungi. It seems better, however, to place them under the Algæ in a separate class with the Schizophyceæ.
[7] See Marshall Ward, “On the Characters or Marks employed for Classifying the Schizomycetes,” Annals of Botany, 1892.
[8] According to Hansen these are not disease forms, but occur regularly under certain conditions, e.g. temperature.
[9] Before fertilisation the oosphere divides and cuts off at the base one or more cells (polar bodies?), termed “wendungszellen.”
[10] From the Greek μὐκης = Fungus, hence “mycology.”