60 



together being at the same time separated by a wall and then 

 a side-branch grows out from the uppermost end of each of the 

 parts in which the filaments have been divided (Fig. 41 g). The 

 branched fdaments are felted together and the coherence is more- 

 over increased by means of some small, short, rhizoids growing 



out here and there from the 

 filaments and attaching them- 

 selves very strongly to the 

 neighbouring filaments (Fig. 

 41 h, i). By this fact and their 

 whole way of growing these 

 filaments show a great likeness 

 f| to the filaments of Clado- 



phoropsis. 



Harvey gives in several 

 respects a good description of 

 the development of the plant, 

 but he lets firstly one cell be 

 developed at the top of the 

 stem and this divides again 

 successively once or twice. 



As mentioned above, the 

 head in the well-developed 

 plant is cup-shaped, being 

 somewhat depressed in the 

 middle, but one also finds 

 specimens with nearly ball- 

 shaped heads as also others 

 more irregularly formed (Fig. 

 42). In specimens growing in 

 shallow water the stipe reaches 



Fig. 43. Chamcedoris Peniculum 



(Sol.) O. K. 



Habit of plant from deep water. 



(About 1:1). 



a length of about 4- — 5 cm 



and the head a diameter of 

 3 cm, but in those from deep 

 water the stem can even be 15 cm long and the head 10 cm 

 broad. In these specimens the head was flattened and thin, 

 forming a circular expansion, most probably an adaptation to 

 the subdued liglit (Fig. 43). 



I may also add that old stems, having lost the head, are 

 able to produce a new ; I have several times found very old stems 

 with a quite young, not yet annulated apex. 



As to the cell contents, we find in Die wall-plasma the irre 



