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276 PLANTS.
seed-bearing, or female organs of Linnaeus, usually occupying
the centre of the flower, and single ; the fecundating,
or male organs of Linnaeus, generally more numerous,
mostly five, surrounding the females in a circle: neither of
these organs serving for more than a single fecundation and
production of seeds, but withering and falling oW, although
new organs of the same kind are frequently produced on
the same plant in the following years. The fecundation
effected by the motion of the atmosphere, or the passage
of insects, either carrying the fecundating liquid from the.
one organ to the other, or occasioning the approach of the
two organs, and the moisture of the one then causing the
rupture of the other, and the consequent emission of the
fecundating fluid. The seeds sometimes growing until they
become similar to their parent before they fall off and are
dispersed.
Plants are primarily divided into three series.
1. PLANTS CELLULOSiE.
Structure cellular ; embryo 0, reproduced by sporae.
2. PLANTS ENDOGENiE.
Structure vascular; trunk cylindrical, homogeneous, the
centre youngest; emhryo undivided; cotyledon 1 ; plumule
extra-axile.
3. PLANTS EXOGEN^.
Structure vascular; trunk conical, composed of wood
covered with bark, the outer part of the wood youngest;
emhryo divided; cotyledons 2 or many; plumule axile.
Series I. PLANTS CELLULOS.E.
PLANTS composed entirely of cellular texture, having
neither lymphatic, spiral, nor proper vessels, nor any cortical
pores. Corculum simple; cotyledons 0; propagation
mostly gemmaceous.
Divided into two subseries : A, aphylleae ; B, foliaceae.