[3H] HEPATIC^E OF ALASKA 365 



accredited it to Japan. 1 Its discovery in Alaska makes a most inter- 

 esting addition to our hepatic flora. The specimens collected by the 

 Harriman Expedition would seem to indicate that the species is some- 

 what more variable than Lindberg supposed. The Hall Island speci- 

 mens agree best with his description and with the type specimens, 

 kindly loaned me by Dr. Harald Lindberg ; the Orca specimens are 

 likewise very similar but have a nearly smooth cuticle ; the Farragut 

 Bay specimens, which have a distinctly roughened cuticle, differ in 

 having teeth at the base of both antical and postical lobes and in 

 having cells with less pronounced trigones. It is possible that these 

 last specimens represent a distinct, undescribed species, but it seems 

 wisest not to try to separate them until a more complete series has 

 been obtained. 



D. plicata is the largest known member of the genus. It is dis- 

 tinguished from both D. albicans and D. taxifolia by its robustness 

 and by its leaf-cells, which, with the exception of those near the edge, 

 have thin walls and distinct trigones instead of being uniformly thick- 

 ened. The absence of the false nerve would, of course, also distin- 

 guish it from D. albicans. 



53, Scapania bolanderi Aust. 



Scapania albescens Steph. Engler's Bot. Jahrb. 8 : 96. 1886. 



Sitka (T. 1486, 1487, 1500, 1503, Setchell 1258, in part); Hot 

 Spring (T. 1489, also mixed with 1471) ; Mt. Verstovia (C. & K. 

 926, 927, in part) ; Juneau (B. & C. 702, in part, T. 1484, Setchell 

 1228, in part); Douglas Island (T. 1483, also mixed with 1495); 

 Orca (T. 1491, 1509, also 1477 and 1510, in part, Setchell 1207, in 

 part) ; Columbia Fiord (C. & K. 1385, 1395) ; Farragut Bay (B. 

 & C. mixed with 620, 621, 623^, T. 1485, in part) ; Kadiak (C. & K. 

 2321, in part). This species, which seems to be very abundant in 

 Alaska, was collected by Kellogg in 1867, and has also been found 

 by J. M. Macoun on Prince of Wales Island, by Townsend at Sitka, 

 and by the Drs. Krause at Chlowak and Chilcoot. 



54. Scapania undulata (L.) Dumort. 



Sitka (T. 1432) ; Juneau (B. & C. 691, in part) ; Virgin Bay (T. 

 1473); Orca (T. 1476); Columbia Fiord (C. & K. 1359, 1383, a 

 large purple form) ; Farragut Bay (T. 1464) ; Yakutat Bay (Saun- 

 ders 1437, in part, 1472) ; Popof Island (Saunders 1479). Not be- 

 fore reported from Alaska, but collected by J. M. Macoun on St. 

 Paul Island in 1892. 



. de 1'Herb Boissier, 5 : 78. 1897. 



