﻿AND HEPATICOLOGY OF NORTH AMERICA. (175) 19 



9. Frullania plana (sp. now) : monoica ; caule procumbente vage ramoso vel subpin- 



nato ; foliis subimbricatis orbiculatis auriculis parvis galeiformibus aeque longis 

 ac latis tectis cauli contiguis ; araphigastriis magnis planis rotundis breviter bifidis 

 sinu laciniisque acutis caule triplo latioribus ; involucri lobis ovalibus, lobulis am- 

 phigastriique laciniis linearibus margine reflexis subrcpandis, his utroque margine 

 inferne unidentatis ; perianthiis (interdum binatis) in ramulo brevi semi-exsertis 

 oblongo-ovalibus vel subobovatis triquetris dorso sulcatis ventre acute unicarinatis 

 sublaevibus : spica mascula globosa. 



F. dilatata, Muse. Alhghan. No. 269. 



Hab. Chimney rocks, on the French Broad River, Eastern Tennessee. 



The large plane amphigastriura, the small auricula, the oval perianth, and the con- 

 siderably larger size of the whole plant, distinguish this species from F. Eboracensis and 

 F. saxatilis. The two latter are probably one and the same species. 



10. Frullania jSTisquallensis (sp. nov.) : digyna ; caule procumbente pinnatim de- 



composite ; foliis conferto-imbricatis oblique ovalibus acuminatis apiculatis valde 

 inflexis, auriculis parvis ovali-galeiformibus ; amphigastriis obovato-rotundis caule 

 duplo latioribus bifidis sinu laciniisque obtusiusculis margine reflexis ; involucri 

 lobulis amphigastriique laciniis linearibus deflexo-falcatis basi cristato-ciliatis ; 

 perianthio ovali-obovato subimmerso trigono dorso convexiusculo ventre alte 

 unicarinato. 



Hab. Fort Nisqually, Oregon, on the bark of trees. (United States Exploring Ex- 

 pedition.) 



In size, color, and ramification, this species is strikingly like F. Tamarisci. But its 

 acuminate, apiculate, and inflexed leaves place it in the same section with F. paradoxa, 



tact, with small triangular ones interposed on the outside of the leaf; S. cuspidatum, Ehrh. ; S. recunum, 

 P. de B. ; S. molluscum, Bruch. ; S. Torreyanum, Sulliv. Fig. 2, both kinds of cells as in fig. 1, except 

 that the small cells are placed on the inside of the leaf; S. acutifolium, Ehrh. ; S. humile, Schimp. ; S. fa- 

 bulare, Sulliv. ; £>'. molle, Sulliv. Fig. 3, large circular or oval cells not in contact, with small oval ones 

 centrally interposed ; S. macrophyllum, Brid. ? S. squarrosum, W. & M. Fig. 4, large quadrangular cells 

 in contact only at their outer and inner angles, with centrally interposed small elliptical ones ; S. cymbifolium, 

 Ehrh. ; S. compaclum, Brid. ; S. sedoides, Brid. ; S. striclum, Sulliv. 



