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Geocalyx graveolens (Schrad.) Nees. Dawson, August 31, 
1898. Gemmiferous. New to Alaska. 
Odontoschisma sphagni (Dicks.) Dumort. In swamp, 
Dawson, September 8, 1898. New to Alaska. 
Blepharostoma trichophyllum (L.) Dumort. On river bank 
below Bonanza Creek, Klondike, June 18, 1899. 
TTEMNOMA SETIFORMIS (Ehrh.). (Jungermannia setiformis 
Ehrh. Beitr. 3: 80. 1788.) On rocks, Lake Lindeman, 
May 5, 1898. 
Ptilidium celiare (L.) Nees. On ground in woods, Daw- 
son, September 7, 18908. 
Diplophylleca taxifolia (Wahlenb.) Trevis. On rocks, 
Cajion 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. wlzg7nosum, but it differs from the latter species in 
the acute and dentate-margined lobes. 
Scapania imbricata sp. nov. 
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 3—¢ 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, 
1.82.2 mm. x .g6-1.34 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 y, firm-walled, those near the middle of lamina 
