PLATE XXIX. 



NITELLA TRANSLUCENS. 



Fig 1, Plant, natural size. 

 " 2. Fruiting verticel. x50 

 " 3, Spore. x50. 

 '' 4, Membrane of spore, x350. 

 " 6, 7, End-cells of leaves. x50. 



Forma confervoides. 

 " 5, End -cells of leaflet. x350. 

 " 8, Branch with fruiting verticel. x50. 



