156 THK JOURNAL OF BOTANY 



^ ^ I Stipules present 16 



■^'^ (Stipules absent 19 



(Post, lobe saccate 17 



(Post, lobe not saccate (exc. Lej. calyptrifolia) 18 



J Leaves entire Frullania 



\ Leaves spinous-dentate Juhula Hutchinsice 



(Post, lobe Ungulate or oblong Porella 



\Post. lobe not Ungulate or oblong Lejeunea 



[Minute; lobes nearly equal or ant. lobe echinate Lejeunea 



19] Larger ; post, lobe much smaller than ant. lobe ; rootlets arising from 

 ( post, lobe Badada 



20 



21 



(Inner bracts not united to form a perianth Acolea 



[inner bracts united to form a perianth 21 



(Per. adherent to the bracts Marsupella 



(Per. free 22 



rto ( Per. compressed, bilabiate Scajpania 



"^"^jPer. not bilabiate 23 



rtQ f Postical branches present 24 



(Branches lateral, very rarely postical 25 



(Lobes dentate or spinous-dentate, stips. x\\iin.evo\is,...Ceplialozla dentatd 

 Lobes entire, stipules absent; lateral branches also present 

 Eremonotus myriocarpus 



/■Whole margins of lobes acutely dentate-serrate. ..Pr/o??oZo&«/s Turneri 



25] Margins of lobes entire, or toothed at upper part only, or with a tooth 



( near tlie base ...26 



I Leaves f divided, lobes very unequal ; ant. lobe at least twice longer 

 than broad DijjlophyUum 

 Leaves ^ or less divided, with ant. lobe not twice longer than broad ; or 

 lobes equal, or ant. lobe almost reduced to a tooth ,. .Jungermania 



\ Stems flagelliferous, leaves 3-5-toothed or lobed 27 



( Stems not flagelliferous combined with leaves 3-5-toothed or lobed... 29 

 [ Stips. to about ^ divided or lower, segments narrow ; leaves usu. 



] 4-toothed Lepidozia 



Stips. hardlj' more than notched, segments broad ; leaves usu. 3- 

 \ toothed Bassania 



(Leaves whitish, translucent, more rarely pale green, flat or convex, 

 stips. large, emarginate, or 2-4-toothed 30 

 Leaves green or brown; if whitish, then concave 31 



[Leaves incubous, entire or shortlv 2-toothed Kantia 



30] Leaves buccubous, irreg. or deeply 2-toothed, or the upper entire 



i Lo2}hocolea 



(Leaves with an indexed auriculate post, lobe ; plant large, purple ... 

 Pleurozia cochleariformis 

 Leaves without an auriculate lobe (except CephaJozia curvifolia)...d2 

 (Leaves cuneate, occas. subrotund, with narrow base; plant brown, 

 miinute, epiphytic Clasmatocolea cuneifolia 

 Leaves not cuneate or subrotund, with narrow base 33 



(Stems erect, leaves thick, ant. margin incurved ; upper leaves irreg. 

 spinous-dentate, lower leaves entire Adelanthus decipiens 

 Leaves without these characters combined 34 



26 



27 



28 



