90 TASMANIAN BRYOPHYTA, 



L'nclerleaves seldom twice as hroad 

 as stem 2-3rd bifid, margin iisuall}^ 

 armed with 1-2 acute teeth 6 



2. Leaves 1-1.5 mm 3 



Leaves mostly exceeding 2 mm 4 



3. Dorsal base decurrent hridelii 



Dorsal base abrupt uJdf'iddiana 



4. Leaves ovate niacrostipula 



Leaves rotund 5 



5. Underleaves entire auxtrigena 



Underleaves rotund to oblong, shortly 



bihd with broad lobes cordifolia 



Uiiderleaves l-3rd bifid, lobes 



acute ... planiusciila 



Underleaves absent paucixiipula 



6. Leaves 1-1.5 mm., broadly ovate 7 



Leaves exceeding 2 mm 8 



7. Underleaves oblong, ventral base of 



leaf not much expanded >'uhew(irf/in(ifa 



Underleaf nearly reniform, lobes 

 dentate, ventral margin of leaf 

 ampliate at base variah/Jis 



8. Leaves broader than long, often with 



marginal teeth, cells 15-18 ^. spoiifj/osa 



Leaves not broader than long, margin 

 entire, cells 36-45 ^. 9 



9. Leaves plane brownish j)aJlide-vircns 



Leaves suberect. pale to dark 



green longi^ti puln 



Group D. Apex of all or most leaves with two 

 teeth or lobes, otherwise plain. 



1. Leaves mostly 1 mm. or under 2 



Leaves 1.5 mm. or longer 5 



2. Underleaves 4-fid, lower leaf-margin 



straight rrcdifidia 



Underleaves 2-fid, leaf-margins curved 

 below '6 



3. Leaf rigid, 0.6 mm (iiii plerfcu!^ 



Leaf mostly 1 mm., flaccid 4 



4. Leaf symmetric, lobes acute Icntd 



Loaf asymmetric, lobes of some 



leaves obtuse nuirroloha 



5. Both margins nearly straight 6 



At least ventral margin curved 8 



6. Lobes minute, underleaves bifid (iHtidojitd 



Lobes larger, underleaves 4-6-fid 7 



