Colour (lark-olive-brown, fading on exposure to a dull amber or yellowish- 

 horn colour. Sori arc abundant in our Australian specimens. In drying 

 the frond does not adhere to paper. 



A widely distributed species, abundant on several parts of 

 the Australian coast, as well as in South Africa and New Zea- 

 land. Herbarium specimens often vary much in colour, but 

 when growing, the frond is uniformly dark-brown. 



Fig. 1. ZoNARiA INTERRUPTA,— ^7^e natural size. 2. Lacinise, from a fertile 

 frond, with sori. 3. Apex of a lacinia, showing surface cells. 4. Portion 

 of the same. 5. Section through frond and sorus. 6. A s^ore and two 

 paranemata : — more or less magnijied. 



