ICONES MUSCOUUM. 99 



FONTINALIS BIFORMIS, Sulliv. 



Tab. 59, 60. 



Plants fluitantes, sola basi ima radicantes, juniores e viridi 

 lutescentes, seniores luride virides. 



Caulis pedalis et longior, tenuis, flexilis, ramosissimus, ramis 

 ramulisque flexuosis elongatis. 



Folia laxe incumbentia, indistincte trifaria, dimorpha ; vernalia 

 ampla mollia late ovato-lanceolata concava acuta vel obtusiuscula, 

 aestivalia (illis delapsis) multo minora angustiora convolutacea 

 rigida ramulos novellos vestientia ; areolatione media foliorum 

 vernalium lineari, apicali latiore breviore rhombea sphagniformi, 

 basilari ad parvas auriculas decurrentes multo majore quadrato- 

 oblonga. 



Flores dioici ; femineis rarissimis ad caulis basin positis ; mas- 

 culis longius stipitatis. 



Capsula oblongo-ovalis vel subcylindrica, perichaetialibus apice 

 setate erosis arete circumvestita, pachyderma ; perist. dentibus 

 lineali-lanceolatis, 18 - 20-articulatis, ciliis solo apice tessellatim 

 conjunctis ceterum liberis appendiculatis, utrisque granuloso- 

 papillosis ; operculo conico-rostrato ; calyptra elongato-conica 

 basi lacera. 



Fontinalis biformis, Sulliv. Mosses U. States, p. 54 ; Sulliv. & Lesqx. 



Muse. Bor.-Amer. Exsicc. (ed. 1), No. 226 b and 226 e . 

 Forma vernalis. — F. disticha var., Muse. Alleghan. No. 191; Pilotri- 



chum sphagnifolium, C. Mull. Synop. 2, p. 150. 

 Forma aestivalis. — F. disticha var., Muse. Alleghan. No. 192; Pilotri- 



chum distichum, C. Mull. Synop. Muse. 2, p. 150, ex parte. 



Hab. Woodland rivulets, Columbus, Ohio. 



Besides other characters less striking, such as the rostrate 

 operculum and the long-stipitate male flower, the prominent 



