130 GRIMMIACE/E. 



not in most cases, it is only one margin that is recurved, the other 

 being plane. The transverse sections in the Plates are taken 

 from about the middle of the length of the leaf ; the margin being 

 often plane at the summit and towards the base, while recurved in 

 the middle portion. 



./Ls. all without hyaline points 2 



\ Upper ls. with hyaline points 6 



/Nerve 2-winged at back above ; plant tall 16. patens 



\ Nerve not winged at back 3 



/Ls. obtuse, cucullate, margin erect ; dioicous 25. unicolor 



3\Ls. more or less bluntly pointed, not cucullate 4 



/Basal cells elongate and sinuose ; dioicous 24. atrata 



4\Basal cells short ; monoicous ; capsule immersed 5 



/Ls. with revolute margin, lanceolate (vars. of) 1. apocarpa 



-> \ Ls. with erect margin, narrow, nerve strong 2. maritivia 



, /Hyaline points short, lower ls. often muticous 7 



\ Hyaline points of upper ls. forming a longish hair 12 



/Capsule immersed ; monoicous 8 



' \ Capsule exserted ; dioicous 9 



„/Plant small, dense, soft, dull-green; perist. teeth cribrose j*. conferta 



\Plant larger, loosely tufted, coarser; perist. teeth sub-entire 1. apocarpa 



/Ls. much crisped or twisted when dry 10 



" \ Ls. not (or scarcely) crisped or twisted II 



/ Ls. very curled when dry ; basal cells thin- walled .3. incurva 



\Ls. spirally twisted when dry ; basal cells incrassate 7. torquata 



/Upper ls. long, often secund, cells quadrate almost to base rj. Hartmani 



\Ls. short, patent, cells sinuose, elongate at base 23. elongata 



/Capsule immersed ; monoicous; plant very small 13 



\ Capsule exserted 14 



/ Peristome absent ; ls. ovate, nerve vanishing 3. anodon 



3\ Peristome present ; ls. usually obovate, nerve running out into the hair../, crinita 



{Seta straight ; leaf margin erect (except ovata) 15 

 Seta curved when moist (or fruit unknown) ; margin recurved, sometimes on one 

 side of the leaf only 20 



/Ls. oblong-lanceolate, contracted to long, rough hair 22. leucophaa 



5\Ls. lanceolate, more or less tapering 16 



.-/Basal cells rectangular, scarcely thickened, not sinuose 17 



\ Basal cells narrow, incrassate, more or less sinuose 19 



/Lid conic, obtuse ; autoicous 18 



' \ Lid rostrate ; dioicous; (calyptra cucullate ; basal cells short) 20. montana 



„ /Calyptra mitriform ; capsule pale ; lower cells elongate 77. Doniana 



\ Calyptra cucullate ; capsule brownish ; basal cells short 21. alpestris 



/Dioicous; lid rostrate ; calyptra cucullate ig. commutata 



'\Autoicous ; lid rostellate ; calyptra mitriform 18. ovata 



/Hair-point very rough 21 



\ Hair-point smooth or slightly roughened only 22 



/ Plant robust ; capsule 8-furrowed ; autoicous 13. decipiens 



\ Plant smaller ; capsule almost smooth ; dioicous 10* . Miihlenbecliii 



/Basal cells shortly rectangular 23 



\Basal cells elongate 27 



( Monoicous ; plant in dense rounded cushions ; ls. rather suddenly contracted to a 



23-j hair 24 



\ Dioicous ; plant loosely tufted ; ls. tapering at point 25 



/Calyptra mitriform ; lid beaked ; Is. bistratose at margin 8. pulvinata 



*\Calyptra cucullate ; lid blunt ; margin unistratose 9. orbicularis 



