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wa Specead Morphology and Classification. — 293 
a single cell, while in the stem of Chara there is a central 
or axial cell, surrounded in a spiral manner by other cells, 
which form a cortex. Multiplication takes place partly by 
single cells becoming detached, partly by impregnation. In 
some species, as Chara hispida (Fig. 419) an antheridium or 
Fic. 419.— Fertile branch Fic. 420.—NVitella syncarpa: 1. end of a cellular fila- 
of Chara hispida (mag- ment from a globule, with antherozoids in the interior 
nified). of the cells; II. a free antherozoid (x 500). 
globule and a female organ called the nucule stand beneath 
a lateral branch ; in other species the two organs, which -' 
may be recognised in an immature condition as small red 
knobs on the plant, are found on different individuals. 
The globule (Fig. 418 11, a) 1s a sessile globular body, and 
consists of eight cortical cells which open when ripe. In 
the interior are a number of cellular filaments (Fig. 420 1.), — 
coiled round one another, from each separate cell of which 
is developed an antherozoid or spermatozoid (Fig. 420 I1.). 
The nucule (Fig. 418 111., 6) consists of an axial row of cells 
which is closely surrounded by five tubes coiled spirally. 
round it. The oospore is developed, as the result of im- 
pregnation, from the large apical cell of the inner axial row, 
\ 
