Dicranochaete reniformis Hieron 
109 
Fig. 1. Dicranochczte reniformis Hieron. A, vegetative individual from 
above, showing two pyrenoids ; the seta is flattened out in one plane. B, side 
view of adult vegetative individual. C, cell stained with Delafield’s haematoxy- 
lin to show the nucleus (n) ; the pyrenoid (p) is unstained. D, E, F, 
zoogonidangia with almost mature zoogonidia, each of the latter showing a 
pigment-spot. G, dehisced zoogonidangium viewed laterally and showing the 
dorsal lid which has partly remained attached to the gelatinous sheath. H, 
diagram (after Hieronymus) showing the directions of the first three successive 
cleavages of the cell-contents prior to formation of zoogonidia. J, two 
zoogonidia, each showing an eye-spot and two cilia. K, two zygospores, each 
showing two conspicuous pigment-spots and several vacuoles. L, two 
individuals, viewed laterally, which have grown in contact with each other, a 
common gelatinous sheath being round both. 
G x 1000, the others x 600. 
