rarely more tban one on tlie same branch, 2-2^ lines in diameter pomtless, 

 between spherical and ovoid. Receptacles very minute, 1-3 Imes long, toru- 

 lose, with 2-3 joints. Colour a very dark brown. Substance coriaceous 

 when fresh, rather brittle when dry. 



This, whicli is one of the handsomest species of Cf/stopkora, 

 appears to be confined to the western and south-western coasts 

 of the continent. The only specimens gathered by me were 

 found cast ashore on the narrow neck of land that forms the 

 south-eastern enclosure of Princess Royal Harbour, King George's 

 Sound ; nor has Dr. Mueller sent it in any of his earlier collec- 

 tions, made to the westward of Cape Northumberland. It may 

 readily be known from all others by the minutely divided, slen- 

 der ramuli, and the very small receptacles. The vesicles are very 

 frequently absent, and often not more than one or two occur on 

 a large fragment of frond. 



Pio- 1 Cystophoka Brownii ; part of a frond,— tlie mltiral size. 2. Fertile 

 ° apex of a pinnule, with receptacles. 3. Section through a receptacle. 

 4. A spore. 5. knihendia -.—all ma (/7iijied. 



