Plate 81 



Fig. 1. Chara Braunii Gmelin, x 65 



Figs. 2-6. Chara canescens Loiseleur-Deslongchamps : 2, portion 

 of plant, X 1; 3 and 4, apices of branchlets, x 50; 5, 

 node, X 15; 6, oogonium, x 25 



Figs. 7-10. Chara excelsa Allen: 7, cortications, x 20; 8, nodes of 

 cortical cells, x 40; 9, apex of branchlet, x 47; 10, 

 oogonium, x 40 



822 ] 



