10 A. W. Evans — North Americmi Species of Frtdlania. 



80 that the moiioicous character is at least very exceptional. Another 

 point of distinction which Austin gives between his two species is in 

 the character of the innermost bracteole — in F. Hallii this is said 

 to be entire or slightly eraarginate at the apex, while in F. Bolanderi 

 it is said to be "acutely 2 (-4) toothed," All of these conditions are 

 sometimes found together, and the other less important differences 

 given are no more constant. 



4. Frullania inflata Gottsche in G. L. et N. Syn. Hep., 424. 1845. 



Plate III. 

 Autoicous : plants closely appressed to matrix^ brownish-green 

 varying to reddish 5 stems irregulai'ly pinnate: leaves imbricated, 

 the lobe orbicular, arching over the stem but not cordate at base, 

 decurved at the rounded apex, entire ; lobule galeate, truncate at base, 

 inflated especially in the upper and outer parts, separated from the 

 stem by about one-fourth its width; stylus minute, subulate: under- 

 leaves distant, orbicular or obovate, bifid about one-third with acute 

 or obtuse lobes and sinus, entire or nearly so : leaf-cells of lobe 

 rather thick-walled with inconspicuous trigones and no intermediate 

 thickenings : $ inflorescence terminal on the stem or a main branch ; 

 bracts in two or three paii's unequally bifid, the lobe ovate to obovate, 

 rounded at apex, entire, lobule shorter and narrower than the lobe, 

 ovate, rounded to subacute at the apex, bearing a small tooth or 

 stylus below the middle of the inner edge, otherwise entire ; bracteole 

 free from bracts, ovate, deeply bifid with acute or obtuse lobes and 

 sinus, entire or bearing one or two minute teeth toward the base; 

 perianth exserted, more or less compressed when young, inflated 

 when old, obovate, abruptly narrowed into a short, broad beak, with 

 a distinct, angled, postical keel and usually with one or more supple- 

 mentary antical and postical ridges: ^ bracts in about two pairs, 

 occupying a short lateral branch near the involucre and forming a 

 short ovoid spike. 



Stems 0-12"'" in diameter; lobes of leaves O-SS™™ long, 0-60"^'" 

 wide, lobules 0-25"'"' long and wide ; underleaves O-SO'""' long and 

 wide; leaf-cells from edge of lobe 0-0l7™"\ from middle 0-024"'" and 

 from base 0-032"'" in diameter; bract I, lobe 0-85'"™ long, 0-50'"™ 

 wide, lobule 0-65™'" long, 0-40™™ wide ; bracteole I, 65™'" long, 

 0-40""" wide ; bract II, lobe 0-65'"'^' long, CoO'"'" wide, lobule 0'60""° 

 long, 0-30'"'" wide ; bracteole II, 0-65""" long, 0-40""" wide ; perianth 

 O-gomm long, 0-65'"'" wide. 



On trees ; " Whastite Red River (Beyrich) ": Baton Rouge, Louisi- 

 ana (Joor) : Point a la Hache, Louisiana (Langlois) : Georgetown, 



