[297] HEPATIC^E OF ALASKA 351 



toward perianth, similar to the leaves but broader, irregularly lobed 

 or simply crispate-sinuate on the margins; innermost bracteole large, 

 irregularly bilobed or trilobed, the lobes mostly rounded, second 

 bracteole much smaller, other bracteoles indistinct ; perianth extend- 

 ing scarcely if at all beyond the bracts, delicate in texture, contracted 

 at the denticulate or subentire mouth ; archegonia about 10 : antheridia 

 borne in the axils of the 9 bracts : capsule on a long and slender 

 stalk, spherical or slightly longer than broad ; spores very minutely ver- 

 ruculose. 



Leaves 0.7 x 0.9 mm., underleaves 70 x 25 /*, leaf-cells in the middle 

 and at the edge of leaf 20 ;JL in diameter, at the base 32 x 23 /u, 9 bracts 

 0.7 X 1.2 mm., spores 16 ;j. in diameter. 



Disenchantment Bay (B. & C. 637^, in part, 641, 641^, T. 1504) ; 

 Hidden Glacier Inlet (T. 1505, in part) ; St. Lawrence Island (T. 

 1517, C. & K. 2007, in part). New to Alaska. 



Nardia hcematosticta is apparently also new to the American conti- 

 nent, but has recently been reported from Greenland. 1 It seems to be 

 much rarer in Europe than N. scalaris, but has a wide distribution 

 there in northern and mountainous regions. By many of the earlier 

 writers it was included under this latter species as a variety ; it is, 

 however, well distinguished by its smaller size, its less concave and 

 sometimes emarginate leaves, its paroicous inflorescence, and by the 

 early disappearance of its underleaves. These are, in fact, very diffi- 

 cult to demonstrate except in connection with the inflorescence and in 

 very young apical regions, where the leaves are still undeveloped. 

 The curious ' fat bodies,' so characteristic of N. scalaris, are either 

 absent from the smaller species or are inconspicuous. The rudimen- 

 tary sac of N. hcematosticta is a most interesting feature and indi- 

 cates, as has already been pointed out by other writers, an approach to 

 such typically saccate genera as Arnellia and Gyrothyra. The species 

 has been well figured by Schiffner 2 and by Massalongo and Carestia. 3 



13. Nardia obovata (Nees) Lindb. 



Farragut Bay (T. 1464, in part); Kadiak (T. 1416, in part). 

 New to Alaska. 



The present species was first recorded for the United States by Dr. 

 Howe, 4 who based his determination upon sterile California specimens. 



'Jensen, Medd. om Gr0nland, 15: 381. 1898. 

 2 Engler & Prantl, Nat. Pflanzenfam. i 3 : 78. 1893. 

 3 Nuovo Gior. Bot. Ital. 14: //. /^. fig. ^ and//. 13. 1882. 

 4 Mem. Torr. Bot. Club, 7: 96. 1899. 



