34 A. W. Evans — North American Sj^eeies of Frullania. 



On trees ; Florida to Louisiana. Distributed in Muse. Alleg. 

 n. 270, in Hep. Bor.-Amer. n. 105e (as F. hrunnea), and in Hep. 

 Amer. n. 8Jf (as F. hrunnea). 



F. Caroliniana was referred by Austin to F. hrunnea, a plant 

 found in southern Africa. Herr Stephani has kindly sent me a speci- 

 men of this species from the type locality and I find it to differ from 

 our plant in the following points : — the leaves are usually minutely 

 apiculate, especially on the branches ; the lobules spread still more 

 widely, often forming more than a right angle with the stem ; the 

 stylus is smaller ; the underleaves are sharply spinose-dentate, those 

 of the branches being sometimes almost laciniate. F. Caroliniana is 

 easily distinguished from all our other species by the distant and 

 widely spi'eading lobules of its leaves. 



INCOMPLETELY KNOWN SpECIES. 



21. Frullania Chilcootiensis Steph., Engler's bot. Jahrb., viii:98. 1886. 



Dioicous : plants growing on bark with other hepaticae, brownish : 

 stems filiform, simple, 3-4'""^ long ; leaves remote, the lobe broadly 

 ovate, obtuse, concave, decurved at the apex, entire, arching over the 

 stem ; lobule a third as large as the lobe, galeate, constricted near the 

 mouth, close to the stem or often obliquely incumbent ; stylus large, 

 triangular-lanceolate, spreading : underleaves spreading, cuneate- 

 obovate, bifid to about the middle, with a narrow obtuse sinus and 

 connivent, obtuse lobes, angled or obtusely unidentate on the sides ; 

 leaf-cells uniformly thickened, O-OIO""^ in diameter : perichaetial 

 bracts in about two pairs, those of the innermost pair double the size 

 of the stem-leaves, spreading, unequally bifid, the lobe oblong-ovate, 

 obtuse, lobule half as broad as the lobe, acute, with a long cilium or 

 stylus above the middle of the inner edge ; bracteole nearly as large 

 as bracts, oblong, bifid about one-third with an open obtuse sinus 

 and subacute lobes : perianth and $ spike unknown. 



On bark ; Chilcoot, Alaska (Krause). 



I have been unable to obtain specimens of this very minute species 

 and have compiled the above account of the plant from the original 

 description, aided by drawings and notes kindly sent me by Herr 

 Stephani. The plant is apparently a Trachycolea. 



22. Frullania Wrightii Aust., Bull. Torrey Bot. Club, iii: 15. 1872 



Dioicous : plants brownish : stems irregularly pinnate : leaves im- 

 bricated, the lobe orbicular, arching over the stem and cordate at 



