Series VI. Apocarpæ. Perianth 1–2-seriate, or absent. Carpels superior, solitary, or if more, apocarpous. Endosperm absent.

Series VII. Glumaceæ. Flowers solitary, sessile in the axils of bracts and arranged in capitula or spikelets with bracts. Segments of perianth small, scale-like, glumaceous or absent. Ovary 1-ovuled, or divided into 1-ovuled loculi. Endosperm present.


Classification of the Thallophytes proposed by Sachs (Text-Book of Botany, English Edition, 1882).

THALLOPHYTES.
Containing chlorophyll.Not containing chlorophyll.
Class I. Protophyta.
Cyanophyceæ.Schizomycetes.
Palmellaceæ (in part).Saccharomycetes.
Class II. Zygosporeæ.
Conjugating cells motile.
Pandorineæ.Myxomycetes.
(Hydrodictyeæ).
Conjugating cells stationary.
Conjugatæ (including Diatomaceæ).Zygomycetes.
Class III. Oosporeæ.
Sphæroplea.
Vaucheria (Cœloblastæ).Saprolegnieæ.
Peronosporeæ.
Volvocineæ.
Œdogonieæ.
Fucoideæ.
Class IV. Carposporeæ.
Coleochæteæ.Ascomycetes (including Lichens).
Florideæ.Æcidiomycetes (Uredineæ).
Characeæ.Basidiomycetes.

System of A. W. Eichler (1883).