Part 256

Myxophyceæ, Cyanophyceæ.

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.

See Marshall Ward, “On the Characters or Marks employed for Classifying the Schizomycetes,” Annals of Botany, 1892.

According to Hansen these are not disease forms, but occur regularly under certain conditions, e.g. temperature.

Before fertilisation the oosphere divides and cuts off at the base one or more cells (polar bodies?), termed “wendungszellen.”

From the Greek μὐκης = Fungus, hence “mycology.”

This term is adopted as a translation of the German “anlage.”

Also termed Water-Fungi (Wasserpilzen).

Antheridium is preferred in this sub-class as keeping a more uniform term (Kn).

In the resupinate fruit-bodies a fertile and sterile surface cannot be distinguished (cf. Polyporaceæ and some Stereum-species).

The two last genera are identical, the Algal part being a Scytonema, that of Cora a Chroococcus; while the same Fungus--a Thelephora--takes part in the formation of all three (A. Möller, Flora, 1893).

Formerly termed oophyte.

The oospore divides by a wall transverse or oblique to the longer axis of the archegonium. From the upper (epibasal) cell, the capsule (and seta) is derived, while the lower (hypobasal) gives rise to the foot. In Riccia the hypobasal half takes part in the formation of the sporangium.

In the Polypodiaceæ unisexual prothallia as distinct as those of Equisetum are of common occurrence.

The position of the annulus varies in the different orders; longitudinal in Polypodiaceæ, Hymenophyllaceæ, and Cyatheaceæ; transverse in Schizæaceæ, Gleicheniaceæ; indistinct or apical in Osmundaceæ, Ophioglossaceæ, Marattiaceæ, Salviniaceæ, Marsiliaceæ.

The former genus Pteris is divided into Pteris and Pteridium.

Floral-leaves (hypsophyllary leaves) are here adopted as an equivalent of the term “Hochblätter,” to signify leaves on the floral-shoot other than foliage or sporangia-bearing leaves. The term bract is applied only to leaves in whose axil a flower is borne, and bracteoles to leaves borne on the flower-stalk (pedicel).

It may be here remarked that another explanation is possible, based on the study of the development (K).

Piperaceæ, Nymphæaceæ.

“Fore-leaf” is adopted as a translation of “Vorblatt.”

Regarding these and other abbreviations see the appendix in the book.

Syncarp = cluster of fruits belonging to one flower.

“Fan” and “sickle” are adopted as terms for these inflorescences from the German “fæchel” and “sichel.”

The aggregation of the fruits of several distinct flowers into one mass.

According to Pfitzer, the column is the prolongation of the floral axis beyond the insertion of the perianth, and is not formed by the coalescence of sporophylls (filament and style).

Cypripedilum = Cypripedium.

Corallorhiza = Coralliorrhiza.

This is Eichler’s view.--According to Drude the perianth is absent; at the base of the bracts, a nectary or cup-like disc. Prantl holds the same view. According to Pax the perianth is absent, but there is a disc cup-like, or reduced to a single toothed scale.