48 iikpaticjE. 



Table of the Genera. 



f Seeds accompanied by spiral filaments in the capsule. 

 A. Common Receptacle of the capsules pedunculated. 



1. Marchantia. Male Recept. pedunculated, scaly beneath ; 

 Loculi of the Fern. Recept. 2-valved ; capsules with calyces ; 

 Calyptra remaining within the calyx. 



2. Fegatella. Male Recept. sessile. Loculi of the Fern. 

 Recept. l-valved. Capsules without calyces. Calyptra remain- 

 ing within the loculus. 



3. Lunularia. Male Recept. sessile. Fern. Recept. deeply 

 divided into taper, l-valved, locidi. Capsules without calyces, 

 4-valved, exserted. 



4. Hygrophila. Male Recept. pedunculated, hirsute. Fern. 

 Recept. hirsute. Capsules without calyces. Loculi, l-valved, 

 carnose. 



B. Common Female Receptacle none. 



5. Targionia. Male Receptacle in a bivalved loculus, ses- 

 sile. Common Fern. Receptacle none. Capsule in a sessile, ter- 

 minal, bivalved loculus. Calyx none. 



6. Jungermannia. Common Fern. Receptacle none. Capsule 

 4-valved, exserted on a succulent, somewhat pellucid pedicell. 



f f Seeds unaccompanied by spiral filaments. 



7. Anthoceros. Male flowers aggregate immersed in the 

 frond. Capsule linear, 2-valved, having a central filament, 

 and arising out of a tubular prolongation of the superior mem- 

 brane of the frond. 



8. Riccia. Capsule, with its exterior membrane calyptri- 

 form, bearing a style, its interior enclosing numerous sub- 

 angular seeds with pellucid coats. Style protruded above the 

 frond. 



