356 EVANS [302] 



part) ; Columbia Fiord (C. & K. 1396, 1400, in part) ; Port Wells 

 (T. 1530, 1475, in part); Orca (T. 1529, in part) ; Yakutat (Satm- 

 ders 1438, T.); Kadiak (C. & K. 2321, in part); Port Clarence 

 (Fernow 1515, in small part). This common and widely distributed 

 species occurs in the Krause collections ; it has also been found on 

 Popof Island by Townsend, and on St. George and Nagai islands by 

 J. M. Macoun. 



19. Lophozia guttulata (Lindb. & Arnell). 



Jungermannia guttulata LINDB. & ARNELL, Kongl. Sv. Vet. Akad. Handl. 

 23, No. 5: 51. 1889. 



Dioicous : depressed-caespitose, green, varying to brownish ; stems 

 reddish-brown to black, densely radiculose, sparingly branched ; leaves 

 distant to imbricated, obliquely inserted, spreading or the upper ones 

 often complicate, slightly decurrent, bifid one-third to one-half with 

 triangular, acute or acuminate, slightly divergent lobes and acute to 

 obtuse, often gibbous, sinus, margin entire : underleaves wanting : 

 leaf-cells with thin walls but distinct and very large, sometimes con- 

 fluent trigones, projecting out into the stellate cell-cavities; cuticle 

 smooth : innermost bracts erect-spreading, bifid to quadrifid about 

 two-fifths with triangular, obtuse to short-acuminate, often unequal 

 lobes, margins otherwise subentire ; bracteole very variable, lanceo- 

 late or bifid, connate on one or on both sides ; perianth cylindrical or 

 obovate-clavate, contracted at the ciliolate mouth (the cilia mostly two 

 to four cells long), terete below, plicate in upper fourth: $ plants 

 mixed with the 9 , bracts in several pairs, strongly saccate at base, 

 cells in saccate portion often with slightly and uniformly thickened 

 walls, other cells normal. 



Leaf-cells at edge of leaf 22 jj. in diameter, in the middle 28 //, and 

 at the base 35 /*. 



Point Gustavus, Glacier Bay (C. & K. 758) ; Columbia Fiord (C. & 

 K. 1397, 1400, in part); Kadiak (C. & K. 2321, in part). New to 

 America. 



Lophozia guttulata was first described from Siberian specimens, but 

 is now known also from various parts of Scandinavia, from Austria, 

 and from Italy. Professor Massalongo * looks upon it as a variety of 

 Lophozia ventricosa, and it approaches somewhat certain forms which 

 were formerly included under Jungermannia porphyroleuca. When 

 well developed, however, it is very easily distinguished and is prob- 

 ably entitled to specific rank. The most important differences be- 

 tween it and L. ventricosa are the following: the plants are smaller; 



J Atti Soc. Veneto-Trent. II, 2: (14). 1895. 



