EXPLANATION OF PLATE XXTIL 



PELLIA. — Plant of P. epipliylla ; calyptra with base of pedicel ; capsule ; au 

 elater, part of same, two spores, aud two antheridia. 



BLASIA. — Plauts of II. pusilla; section of cavity at the end of tlie midrib 

 sliowiug young perianth and calyptra; end of thallus with calyptra aud 

 protruding capsule; capsule dehiscing; elaters and spores; part of elater 

 and two spores; ^ thallus with two antheridia; gemmiparous thallus 

 with two receptacles ; section of a receptacle showing enclosed gemma; 

 and the protruded orifice. 



METZGEKIA. —Plants { c?. 9? ''lud gemmiparous) of M. furcata, and parts 

 of same enlarged ; hispid perianth with 2-lobed involucral leaf and base 

 of pedicel ; a gemma ; an antheridium ; elaters and spores. 



ANEUKA. — Plants ( ^ and 9 ) <^f A. sessilis ; section of fleshy calyptra with 

 base of pedicel ; deliiscing capsule bearded by persistent elaters ; elater, 

 part of same, and spores ; part of thallus witli long deiiexed ^ recepta- 

 cles, and one cut transversely shoAving antheridia. 



FOSSOMBRONIA. — Plant of F. pusilla, and a part enlarged; capsule de- 

 hiscing, with perianth and involucral leaves ; part of stem with two leaves 

 aud dorsal antheridia; an antheridium, elaters, aud spores. 



GEOC ALYX. — Plant of G. graveolens ; two pairs of leases with underleaves ; 

 part of stem with an underleaf ; section of involucre showing calyptra aud 

 base of pedicel ; dehiscent capsule ; elaters and spores. 



GRIMALDIA. — Parts of ^ and 9 plants of G. barbifrons ; section of ^ 

 disk ; 9 receptacle aud section of same ; dehiscent capsule ; elaters and 

 spores. 



CHILOSCYPHUS. — Plant of C. ascendens ; a leaf with underleaf; a pair of 

 leaves with antheridia ; a part of stem witli involucral leaves, perianth, 

 and calyptra ; deliiscent capsule ; elaters and spores. 



HAIiPAXTHUS. — Plant of H. Flotovianus, ami same enlarged; a pair of 

 leaves with underleaf; periantli witli involucral leaves, and section shov>'- 

 ing calyptra; elaters, a part of one, and spores. 



LnpliOCOLEA. — Plant of L. heterophylla ; a part enlarged witli involucral 

 leaves and perianth ; cross-section of perianth ; three pairs of leaves with 

 underleaves; a leaf and antheridium; an underleaf; an elater and spores. 



CEPHALOZLV. — Plant of C. multittora ; two pairs of leaves ; perianth with 

 involucral leaves ; an involucral leaf ; calyptra ; capsule closed, and dehis- 

 cent ; an elater and spores. 



GYMXO^NIITRIU^L — Plants of G. concinnatum ; three pairs of leaves ; apex 

 of stem with involucral leaves and dehiscent capsule; two involucral 

 leaves ; calyptra. 



MAPSUPELLA. — Plant of M. emarginata; part of same Avith involucral 

 leaves ; involucre and periantli opened showing calyptra aud base of pedi- 

 cel ; ca])sule ; elater and spores. 



