HOW TO KNOW THE SEAWEEDS 



70b Base of upper branches usually without a cross wall. Fig. 103... 

 Cladophoropsis membranacea 



Fig. 103. Cladophoropsis membranacea 

 (C. Agardh) Bbrgesen 



A small part of a plant, X 9.6. The 

 filaments are mostly 100 to 200 ^ in 

 diameter. Dry, pressed specimens will 

 appear rather lustrous against the pa- 

 per. This is a tropical plant which may 

 be found forming dense, soft patches 

 and tufts on rocks in rather quiet water 

 in Florida. 



Figure 103 



71a Thallus reddish in color; growth from an apical cell 74 



71b Thallus brownish in color; growth intercalary, not from an apical 

 cell 72 



72a Erect filaments all more or less alike; plants epiphytic or saxi- 

 calous < ' ^ 



80 



