158 THK JOURNAL OF BOTANY 



55 i 



58 



62 



68 



Section of frond showing a fascicle of smaller cells Pallavicinia 



Lyellii 

 Frond not showing such a fascicle Calycularia 



{■ Flagon-shaped receptacle for gemmaB very frequently present in the 

 frond; ovate-toothed stips. present on each side of nerve beneath 

 Blasia pusilla 

 Stips. and gemmiferous receptacle absent 57 



/Calyptra hairy; nerve of frond sharply defined Metzgeria 



STJCalyptra smooth or papillose; distinction between nerve and lamina 

 ( not sharply defined 58 



Elatprs persistent on centre of capsule ; antheridia beneath warty 

 eminences scattered on face of frond Pellia 



Elaters persistent on summit of the valves ; antheridia in two rows 

 on short lateral branches Aneura 



;-qJ Frond without pores ; large wavy dark green ...Dmnortiera hirsuta 

 I Frond with pores 60 



[Semilunar receptacle for gemmae usu. present on the frond 



60 ] Lunidaria cruciata 

 (No semilunar receptacle for gemmae 61 



/ Female receptacle rayed ; frond usu. 1-5 in. long ; receptacle for gemmae 



61-1 beaker-shaped, with fringed margin Marchantia polytnorpha 



(Female receptacle sinuate or lobed 62 



Female receptacle conical ; frond usu. 2-5 in. long, areolae and pores 

 very d istinct Conocephalus conicus 



Female receptacle not conical; frond 5-li in. long 63 



Long hairs at base and apex of female peduncle ; frond smooth when 

 dry Beboidia hemisphcerica 



No hairs at base or apex of female peduncle ; frond rough when dry 



Chomiocarpon quadratus 



SPECIES. 



FRULLANIA. 



1 J Ant. lobe of branch leaves, at least, usu. with a line of enlarged cells... 2 

 I Lobes without a line of enlarged cells 4 



^ ( Stipules hooded Tamarisci 



\ Stipules plane 3 



/ Stips. \ divided with obtuse usu. truncate lobes ; enlarged cells scattered 



Q 1 fragiUfolia 



*" 1 Stips. \ divided with acute lobes ; enlarged cells in a continuous line 

 i microphylla 



. I Per. tuberculate ; post, lobe }i breadth of ant. lobe dilatata 



(Per. smooth: post, lobe ^-J breadth of ant. lobe germana 



LEJEUNEA. 



I ! Leaves calyptriform ,. calyptrifolia 



\ Leaves not calyptriform 2 



.^Plants with stipules 3 



""IPlants without stipules 13 



o ( Stipules entire MacJcaii 



jStipules notched or lobed 4 



, j Lobes of stipules divergent 5 



\ Lobes of stipules m. or 1. incurved 6 



wf Stips. rather deeply divided, lobes acute hamatifolia 



* (Stips. only emarginate, lobes very obtuse.. ovata 



