— 149 — 



IS.F.antipyretica L. — F. Howellii Ren. et Card. ? 



Leaves of stem ovate-oblong with gen. obtuse not long acumen; 

 alar cells brown gen. not well-defined, the others us. sublinear- 

 fusiform. Branch-leaves us. not much narrower. Perichetial 

 leaves us. obtuse. Capsule oval or oval-oblong r. round-oval; 

 teeth red; lid obtuse subconvex or short-conic. Very variable. 

 • — A var. with broader leaves and wider cells often is mistaken 

 for F. gigantea SulUv.; its leaves are often copper reddish. — 

 Common in running watei', r. in marshes and in alp. regions. 

 Eur. Sweden! Anier. Can.: Macoun, U. S : Delamare, com. 

 Cardot. 



* F.gvacilis Lindberg. 



Leaves more heteromorphous; the vernal of stem soon deci- 

 duous, those of branches us. as narrow as in F. dalecarlica. 

 Capsule often round-oval. Eur. probably not r. Sweden! Finl.: 

 Lackstroem, com. Brotherus. Austria: Venturi. 



* F.arTernica Renauld. 



»Leaves oblong-lanceolate, sometimes with 2 — 5 teeth at apex. 

 — • Lakes r. Eur. France: Renauld »: Cardot 1. c. 



* F.californica Sullivant. 



Leaves often less distinctly conduplicate, gen. broad and nearly 

 uniform; alar cells more distinct subhyaline. — Stagnant wa- 

 ter r. Amer. U. S.: BoJsender, com. C. Mueller and J. Cardot. 



* F.Duriaei Schimper. 



Leaves as in last subspecies but slightly denticulate at apex; 

 apical cells suboval, middle sublanceolate. Eur. r. France: 

 Espagne, com. Husnot. (Africa: Durieu, com. Husnot.) Amer. 

 »U. S.»: Cardot. 



* F.islandica Cardot. 



» Leaves narrower, sharplj^ long-acuminate; areolation irregular. 

 Eur. Iceland »; Cardot. 



* F.sparsifolia Limpricht. 



»Leaves lanceolate-linear. Peristomial teeth yellowish red. 

 Habit of F. antip. ^gracilis but more slender. — Eur. Norway: 

 Bryhn»: Limpricht. 

 *F.androgyna Ruthe. 



»Leaves slightly decurrent; alar cells well-defined. Paroecious. 

 — Eur. Germany: Ruthe»: Limpricht. 



16.F.neomexicana Sullivant et Lesquereux; Sull. ic. m. — 

 »F. antipyretica var.»: Cardot. 



Differs from F. antipyretica: Leaves less distant and longer- 

 decurrent, bright green or yellowish glossy; alar cells well-defined. 



