76 BRITISH CHAROPHYTA. 



scuta (scutum, a shield), see under shields. 



shields or scuta, the eight shield-like plates which unite to 

 form the exterior of the antheridium. 



spermatozoids ((nripjua, a seed ; Zwov, an animal ; nSoC; re- 

 semblance), another term for antherozoid. 



spine-cells, spines, cells growing outwards from the nodal-cells 

 of the stem-cortex. 



spiral-cells, the five cylindrical cells which clasp the egg-coll. 



sporangium (airopa, a seed ; a-yyetov, a vessel), a term applied 

 to the oogonium. 



sporocarp (airopci, a seed; Kapirbg, a fruit), the fertilised and 

 matured oosphere. Another term for the oospore. 



sporophyas, sporophydium (mropa, a seed ; 0uac, a shoot), a term 

 applied to the oogonium. 



sporostegium (<nropa, a seed ; ore'-p;, a covering), a term applied 

 to the oogonium. 



stipulodes (stipitla, little stalk or blade), certain small cells in 

 a single or double circle arising below, and very occa- 

 sionally also above, the whorl of branchlets in the Charese 

 and growing outwards as papillae or more or less elongated 

 processes. 



streaming, a term for cyclosis. 



striae (lat. furrows), a term applied to the spiral ridges of the 

 oospore. 



sulci (lat. grooves), the spaces between the ridges of the 

 oospore ; termed also fossulse. 



triplostichous (ronrXooz, triple ; o-rl, a row), having three rows 

 of cortical-cells to each branchlet or bract-cell. Triplo- 

 stichte, a subsection of Chara. 



tubercle, a term sometimes applied to a bulbil. 



tylacanthous (ruAoc, a ridge; aKavQa, a spine), having a stem- 

 cortex in which the primary cells are more prominent 

 than the secondary, so that the spine-cells appear to be 

 seated on ridges. Tylacanthse, a subsection of Chara. 



unistipulate (unu*, one; stipula, a little blade), having a single 

 stipulode at the base of each branchlet. 



