16 (//) Thallus areolatc (thallus divided into fields by fissures. Fig. 30) 17 



Figure 30. — Areolate thallus. Scale is I mm. 



16(//) Thallus not areolate 20 



17 (76) Areoles bordered by raised juga (Fig. 31). 



.18 



Figure 31 . — Areoli-s bordered b) 

 juga. Scale is 0.1 mm. 



17 iI6) Areoles not bordered by juga (Fig. 32) . 



.19 



Figure 32. — Areoles wilhout juga. 

 Scale is 0. 1 mm. 



11 



