282 



THE TASMANIA.N FLORA. 



Sori covered by the incurved margin of the 



leaf ... ... ■•■ ... ••• ' •■■ 



Sori opening outwards... 

 , Leaves much divided into small, distant, 



stalked, reniform. segments... 

 Leaves much divided,' 1-3 feet. Plant creeping 

 Leaves much divided. Tree-fern 

 Leaf very small, or delicate and pendulous . . . 

 Leaf erect, 4-18 inches.. 

 Leaf 4-6 inches, once or twice divided 

 Leaf 1-2 feet, much divided. Mature sorus 



apparently removed from margin, and 



hiding the small indusium ... 

 Sori as broad as deep ... 



Sori tubular, with a long protruding bristle ... 

 Sori longer than broad, or ill-defined ... 

 Sori discoid or nearly so 

 Sori naked 

 Sori covered, at least when young, by an 



indusium 

 Sorus continuous, parallel with the midrib . . . 

 Sori oblong or ill-defined 

 Leaves simple, lanceolate 

 Leaves 1-3 lines, divided 

 Sori numerous, parallel with the midrib 

 Sori diverging ... ... .... 



Sori relatively long and straight 



Sori small and curved ... 



Sori naked 



Sori covered, at least when young, by an 



indusium 

 Leaves dichotomously dividing 

 Creeping or small and tufted ... 

 Growing with an erect or massive stem 

 Leaves with simple forked veins 

 Leaves broad, entire,, or with few lobes, veins 



much netted ... 

 Leaves much divided. Sporangia and sori 



minute... ... ... ... ni.», .. 



Leaves not much divided. Sporangiajrelatively 



large, dark red. Sori usually confluent 

 Indusium attached at or near the middle 

 Indusium attached by the margin 

 Indusium attached by the centre 

 Indusium attached towards one side ... 

 Indusium attached by one side so as to form a 



pocket ... 

 Indusium bursting in the centre, the Jbase 



forming a cup... .... ;■-•,:... 



viu. 

 ix. 



4. 

 14. 

 ■20. 

 xi. 



X. 



3. 



21. 



26. 



25. 



xiii. 



xviii. 



xiv. 



XVI. 



2. Blechnum. 



XV. 



12. 



11. 



6. 



xvii. 



9. 



10. 



Adiantum. 

 Mypolepis. 

 Dicksonia. 



Lindsay a. 



Davallia. 



Hymenophyllum. 



Tr-ichomaneK, 



Grammitis. 



Oymnogramme. 



Doodia. 



Asplenium . 

 Athyrium. 



xxii. 

 24. 



XX. 



xxi. 

 16. 



16. 



23. 



28. 

 xxiii. 

 xxiv. 



18. 



17. 



19. 

 22. 



Gleichenia. 



Polypodium. 

 Phymatodes. 

 Ahopihla. 

 Todea. 



Polystichum. 

 Nefhrodium. 



Cystopteris. 



Cyathea. 



1. LOMARIA. 



Sori continuous along the under side of each pinnule, the margin incurved 

 over the sori, giving, the fertile leaves a much contracted appearance. 



i. Leaf simple or with few irregular lobes ... ... 1. L. pafe?:som. 



Leaf divided, normally once... . . ... ... ii. 



