Cryptogamiæ (-&?;). [NL., fr. Gr.
krypto`s hidden, secret + ga`mos marriage.]
(Bot.) The series or division of flowerless plants,
or those never having true stamens and pistils, but propagated by
spores of various kinds.
&fist; The subdivisions have been variously arranged. The
following arrangement recognizes four classes: --
I. Pteridophyta, or Vascular Acrogens. These
include Ferns, Equiseta or Scouring rushes,
Lycopodiaceæ or Club mosses,
Selaginelleæ, and several other smaller orders. Here
belonged also the extinct coal plants called
Lepidodendron, Sigillaria, and
II. Bryophita, or Cellular Acrogens. These
include Musci, or Mosses, Hepaticæ, or Scale
mosses and Liverworts, and possibly Characeæ, the
III. Algæ, which are divided into
Florideæ, the Red Seaweeds, and the orders
Diatomaceæ, and Cryptophyceæ.
IV. Fungi. The molds, mildews, mushrooms, puffballs,
etc., which are variously grouped into several subclasses and
many orders. The Lichenes or Lichens are now considered to
be of a mixed nature, each plant partly a Fungus and partly an