[291] HEPATIC^ OF ALASKA 345 



& K. 666); Port Wells (T. 1428). Also collected by the Drs. 

 Krause, by Miss Cooley near Juneau, and by Funston at Coal Creek 

 Hill, Yukon River district. 



3. Marchantia polymorpha L. 



Glacier Bay (T. 1409, C. & K. 757) ; Orca (T. 1408) ; St. Paul 

 Island (T. 1413); St. Matthew Island (T. 1401); Hall Island (T. 

 1414) . This cosmopolitan species has also been collected by Rothrock, 

 by Bischoff, by the Drs. Krause, and by Miss Cooley. 



Only 3 Marchantiaceae occur in the collections. Of the other 4 

 species, already reported from Alaska, 2 — the doubtful JFi7nbriaria 

 ienella and Grlmaldia fragrans (Balb.) Corda — have already been 

 mentioned. The other 2 species are noted by Dr. Howe : one of these 

 is Asterella fragrans (Schleich.) Trevis.,' which is ascribed simply to 

 Alaska ; the other is a species of Sauteria^ probably S. alpina (Nees 

 & Bischoff) Nees, ^ which was collected by Mr. Kincaid on St. Paul 

 Island in 1897. 



METZGERIACE^. 



4. Aneura latifrons Lindb. 



Mt. Verstovia (C. & K. 927, in part) ; Farragut Bay (C. & K. 

 454, in part, B. & C. 618, in part). New to Alaska. 



5. Pallavicinia hibernica (Hook.) S. F. Gray, Nat. Ar. Brit. PI. 



2:684. l82I.» 



Jungermannia hibernica HoOK. Brit. Jung. ^/. 78, 1816. 

 Dilcena hibernica Dumort. Comm. bot. 114. 1822. 



Mcerckia hibernica Gottsche ; Rabenhorst, Hep. eur. exsic. no. 121. i860 

 (in obs. Blyttice lyeilii). 



Dioicous : $ and 9 plants mixed together, green : thallus pros- 

 trate, often creeping among other bryophytes, dichotomous, of about 

 the same width throughout; midrib 15-20 cells thick in the middle 

 on robust plants, strongly convex below, slightly concave above, nar- 

 rowing rather abruptly on each side into a broad, translucent wing a 

 single cell thick ; margins of the wings more or less crispate-undu- 

 late ; cells of the thallus everywhere with thin and colorless walls ex- 

 cept in the postical part of the midrib, where they are slightly thicker 

 and brownish : rhizoids numerous, white : archegonia in groups of 10 

 to 20 on the upper surface of the thallus near the apex, surrounded 



»Mem. Torr. Bot. Club, 7: 39. 1899. 

 «L. c, 56. 



3 A fuller synonymy is given by Lindberg, Not. ur Sallsk. pro F. et Fl. 

 Fenn. 9: 15. 1868. 



