(io 4 ) 



Geocalyx graveolens (Schrad.) Nees. Dawson, August 31, 

 1898. Gemmiferous. New to Alaska. 



Odo7itosckisma sphagni (Dicks.) Dumort. In swamp, 

 Dawson, September 8, 1898. New to Alaska. 



Bhpharostoma trichophyllum (L.) Dumort. On river bank 

 below Bonanza Creek, Klondike, June 18, 1899. 



Temxoma setiformis (Ehrh.). {Jungermannia setifo'mis 

 Ehrh. Beitr. 3: 80. 1788.) On rocks, Lake Lindeman, 

 May 5, 1898. 



Ptilidium ciliare (L.) Nees. On ground in woods, Daw- 

 son, September 7, 1898. 



Diplophxllcia ta.xifolia (Wahlenb.) Trevis. On rocks, 

 Canon City, March 27, 1898. 



Scapania undulata (L.) Dumort. In streams running into 

 Lake Lindeman, April 9 and May 21, 1898. Also a variety 

 in still water, Lake Lindeman, May 23, 1898. A very pe- 

 culiar plant, probably to be considered a variety of this 

 species, was collected by Mr. Williams " in springs between 

 Lakes Lindeman and Bennett, June 2, 1898." The leaf- 

 lobes in this are almost wholly separate, as sometimes hap- 

 pens in S. uliginosum, but it differs from the latter species in 

 the acute and dentate-margined lobes. 



Scapania imbricata sp. now 



Yellowish green, becoming somewhat brown, densely caes- 

 pitose : stems (secondary) prostrate or subascending, plane at 

 apices, 2-4 cm. long, .4— .57 mm. (22-28 cells) in thickness, 

 brown, simple or sometimes sparingly and irregularly 

 branched, root-hairs obsolescent : leaves for the most part 

 very densely imbricate, of nearly uniform size throughout, 

 rigid and subconchiform when dry, or slightly wrinkled, not 

 decurrent, bipartite for |-| their length, the carina slightly or 

 not at all alate ; lobes very entire ; ventral lobes twice as large 

 as the dorsal or subequal, oblong, oblong-ovate, or elliptical, 

 1.8-2.2 mm. x .96-1.34 mm., patent-horizontal, the very obtuse 

 often subtruncate apex deflexed, the ventral margin nearly 

 plane ; dorsal lobes elliptical-ovate or ovate, suberect or 

 erecto-patent, inflato-convex, appressed-imbricate, rounded- 

 obtuse ; leaf-cells near the margin subquadrate or elliptical- 

 oblong, 12-22 ft, firm-walled, those near the middle of lamina 



