i be 
“manner at pours ‘nlerald os a8 is oy here ate. 
i Br two genera, Chara and Nitella. known as 3: Brittle- -worts, 
1G 3. 
mes - 
Fic. 418.—Chara fragilis : I. natural size ; II. germina- 
ting spore (magnified); the lower part as far as the {Fa irek 
second whorl of roots is the pro-embryo ; III. part of (fe ae 
the fertile thallus (more strongly magnified) ; beneath ~ ine 
the ovoid nucule 2 is the spherical globule a. eal 
inch ding a considerable number of species distributed v4 
the whole Or In LVitella each internode consists of 
4 4 
jp Me f 
re 
