BY L. RODWAY. 75 



1. Leaves deltoid; dorsal margin nearly 



straight, ventral strongly curved 2 



Leaves subovate to rotund 6 



Leaves obcuneate to narrowly obovate 13 



2. Leaves broader than long 3 



Leaves longer than broad 4 



3. Leaves 3-4 mm. strongly dentate ... ddtoidea 

 Leaves 2 mm. margin undulate, 



seldom with a few teeth microdictyum 



4. Leaves obliquely ovate, apex narrow 5 



Leaves obliquely oblong, apex broad fasciculata 



5. Dorsal margin nearly straight and 



plain stromhifolia 



Dorsal margin curved, usually with a 



few bold teeth lyallii 



6. Margin many dentate 7 



Margin plain or few dentate 10 



7. Teeth minute 8 



Teeth bold 9 



S. Dorsal base abruptly inserted fusreVa 



Dorsal base decurrent taylori 



9. Both margins armed retros2:)ectan% 



Dorsal margin nude hiseriaUs 



10. Leaves rotund circinali^ 



Ventral margin much expanded 11 



11. Leaves rigid, strongly decurved... decurvi folia 

 Leaves erect appressed 12 



12. Leaves brownish pusilla 



Leaves pale green flaccid radiculosa 



13. Leaves 1.5 mm., surface obtusely papil- 



late plevraia 



Leaves much smaller, surface 

 smooth inriirvicoUa 



PJagiodiila deUoidea, Lindh. — Robust, short and 

 simple to 10 cm., and branched. Leaves crowded, imbri- 

 cate, deltoid, 3-4 mm. long, very oblique and a similar 

 breadth, dorsal margin strongly reflexed, lightly curved 

 and mostly nude, base shortly decurrent, ventral margin 

 very expanded from apex to base, often conniving with 

 the opposite leaves to form a crest, apex and ventral 

 margin variously armed with few to many bold teeth ; 

 cells averasang 24 ^., walls thick, trigones large. Perianth 

 immersed in large floral leaves, mouth broadly truncate, 

 spinulose, dorsal margin with a narrow dentate wing 

 above. 



Very common. 



East Australia. New Zealand. 



