BY L. RODWAY. 101 



Chiloscyphus, Corda. 



Plants from very robust to very small. Stems simple 

 or with few irregular lateral branches. Leaves succubous, 

 opposite or alternate entire or with a dentate margin 

 seldom bilobed. Cells medium sized ; trigones from very 

 large to none. Underleaves well developed, bifid with 

 acute lobes to reniform. Sporophyte teraiinating a very 

 short branch placed low down on the stem. Calyptra well 

 developed. Perianth oblong to campanulate cylindric, 

 mouth generally lobed, not constricted. 



The genus is indistinguishable from LopJiocolca except 

 in the position of the sporophyte. 



1. Underleaves reniform 2 



Underleaves not broader than long 8 



2. Leaves entire or with few very small teeth 3 

 Margins of leaves and underleaves dentate... 4 



3. Dorsal bases connate, cuticle 



smooth Cfjnjugafus 



Dorsal bases free, cuticle papillate ... lirl-ii 



Leaves undulate .-iinuoms 



Leaves and underleaves with saccate 



appendages rymhaJiferus 



4. Underleaves with short simple teeth 5 



Underleaves with 4 bifid lobes and spinous 



teeth 7 



5. Trigones large confluent hillardieri 



Trigones small 6 



6. Underleaf concave; cells 30 ^. ... gunnlanui^ 

 Underleaf flat; cells 40-50 ^. ... tcnmanicus 



7. Leaf apex bi-tridentate fis^iatrpus 



Leaf pluridentate multifidus 



8. Dorsal base of leaf abrupt 9 



Dorsal base decurrent 13 



9. Underleaf rotund, entire or shortly bifld ... 10 

 Underleaf oblong, deeply bifid 12 



10. Underleaf broadly connate with the 



leaves lerierl 



Underleaves free or nearly so 11 



11. Trigones small acute weyinouthianus 



Trigones large confluent cordifoUus 



12. Leaves smooth, cells large larus 



Leaves spinous and papillose echineUua 



13. Leaves with a truncate bifid apex 14 



Leaves entire or irregularly bi-tridentate ... 15 



14. Underleaf rotund 3-4 times as broad 



as the stem coal if us 



Underleaf oblong, not broader than 

 the stem filicicolus 



