HOW TO KNOW THE SEAWEEDS 



51b Percurrent axes not clearly developed. Fig. 82 Pterochondria 



Fig. 82. Pterochondria woodii (Har- 

 vey) Hollenberg 



A. A small part of a plant about 

 10 cm. high to show absence of a 

 distinct percurrent axis and the rela- 

 tively wide spacing of the branches 

 compared to Pterosiphonia in Fig. 81, 

 X 3.5. B. Detail of a compound ulti- 

 mate branchlet, X 16. A common 

 epiphyte on Cystoseira and other 

 large algae along the whole Pacific 

 Coast. 



Figure 82 



52a Thallus with midrib and (or) veins 



53 



52b Thallus without midrib or veins 55 



53a Plants green, with palmate veins. Fig. 83 ... . Anadyomene stellata 



Fig. 83. Anadyomene stel- 

 lata (Wulfen) J. Agardh 



An entire small plant, 

 X 0.8, to show the pal- 

 mate veins and membran- 

 ous character. Blades may 

 reach a height or spread 

 of 5-7 cm. It is a tropical 

 plant of southern Florida. 



Figure 83 



68 



