196 
METHODS IN PLANT HISTOLOGY 
excellent; for later stages, especially in the development of the 
antheridia, iron-haematoxylin is much better. 
The antheridium of Chara stains so rapidly that the beginner uni¬ 
formly makes poor preparations. In order to get good preparations 
CHLOROPHYCEAE 
SIPHONEAE 
Coenoctjtic 
Thij/losipbonaceae 
I 
i 
i/auc/ji 
'auchenaceae 
fophomceae 
/ CONFERVOIDME 
Filamentous, uninucleate 
Co!co chaetaceac 
Fterbesiacecye 
Cauleifaceac Codiaccae 
Bruopd/daceae 
' | JSasyc/adaceae 
j /'.lA/oniaceae 
Bot ry cliia cca e 
'//t/drodictifon 
v „ ocenedetmus 
\ M/m . 
Cudonna 
/' qL rnndorina 
o u c Q ^ Ullamaaomonas 
i 
Chaetoporaceae 
v „ ..-yjoniarm 
Ulotricfi'aceae 
U/i 
vat'eae 
P/eurococcus 
^protococcoideae; , , 
[lot ft lamentous, mostly uninucleate 
Fig. 46.—A diagram illustrating an opinion in regard to relationships in the Chlorophyceae 
of the antheridium, it is necessary to disregard other structures, 
which will be stained lightly or not at all when the stain is just right 
in the antheridial filaments. 
