EVANS : HEPATIC-E COLLECTED IN SOUTHERN PATAGONIA. 41 



judging from the description, A. Jamesonii Tayl. 1 is also to be con- 

 sidered a synonym. 



9. BLEPHARIDOPHYLLUM DENSIFOLIUM (Hook.) Angstr. Ofversigt af 

 Kongl. Vetensk.-Akad. Forhand. 29, Haft 5: 151. 1874. 



Jungermannia densifolia Hook. Muse. Exot. pi. 36. 1818. 

 Scapania densifolia Nees in G. L. & N. Syn. Hep. 72. 1844. 

 Diplophylliim densifolium Mitt. Jour. Linn. Soc. 15: 69. 1875. 

 Martinellia densifolia Trev. Mem. reale 1st. Lomb. di Sci. e Lett. III. 4: 

 411. 1877. 



Villarino Bay. (By Savatier in Magell. St.) 



A very variable species, including Jungermannia vertebralis Hook. f. 

 & Tayl., J. chloroleuca Hook. f. & Tayl. and J. Pycnophylla De Not. 



10. BLEPHAROSTOMA PILOSUM Evans, Torrey Bulletin, 25: 413. 1898. 



Pi. IV, Figs. 1-6. 



Sterile : densely caepitose, brownish-green ; stems erect, simple or with 

 a few lateral branches, sparingly or not at all radiculose, the rhizoids, 

 when present, coming from the basal cells of the underleaves ; leaves and 

 underleaves similar, transversely inserted, concave, broadly orbicular- 

 quadrate in general outline, deeply 4-parted (about f), the segments 

 lanceolate, 4-7 cells wide at base, tapering into capillary points (each 

 composed of a single row of 5 or more cells), and bearing on their 

 margins 5-8 pairs of opposite \videly divaricate capillary teeth, becoming 

 successively longer toward the base ; upper teeth composed of a single 

 row of cells, lower teeth strongly deflexed, often 2 cells wide in the lower 

 part and giving off a pair or two of tertiary teeth, the external basal teeth 

 of the outer segments much larger than the others and making the leaves 

 appear 6-parted ; undivided basal part of the leaves about 4 cells across : 

 leaves subtending branches similar to the others but only 2-parted (though 

 often apparently 4-parted from the large size of the external basal teeth of 

 the segments) : leaf cells oblong, rather thick-walled but without trigones ; 

 cuticle often indistinctly and minutely verruculose-striate, especially toward 

 the base of the leaves. 



'Fl. N. Zeal. 2: 171. 1855. 



