—14— 
ical Station, Vol. 3, no 58, p. 54). Vicinity of Yakutat Ba>, Alaska, 1892, coll. 
Frederick Funston, comm. U. S. National Museum. (This specimen is a 
much prized souvenir of our plucky little American soldier and botanist.) 
Juneau, Alaska, Mehner. Cape Breton Id., No. Tdj2, 1915, and also No. 
go of 1909, G. E. Nichols.. Traille River Divide, Idaho, alt. 7,000 It., "On 
shady crevice., of quartzite ledges, J. B. Leiberg, No. 260" White Bay, New- 
foundland, 10-6-9 1. Sent by Dr. Best, probably collected by Waghorne. 
Brachythecium Holzingeri Grout, comb. nov. 
B. Holzingeri Grout (B. colhnum Holzingeri Grout). Bryologist 4 :48. Ju"y» 
1901, 
At the time this variety was described the collinum group and its allies were 
not well enough known to warrant making a new species, but a specimen from 
A. H. Brinkman, Mt. Kamloops, British Columbia, on soil, alt. 3700 ft., Sept. 
20, 19 10, presents an extreme and well differentiated form that seems certainly 
worthy of specific rank. The leaves are very widely long-decurrent. The plants 
are loosely intricate and sparingly branched and the seta slightly papillose. 
I consider this form typical of the species rather than the plant originally described 
as B. collinum Holzingeri. 
Brachythecium oxycladon (Brid.) J. & S. forma falcata forma nov. 
A very interesting xerophytic form unlike anything 1 have seen before. The 
plants are bright yellow with short stems and branches which are more or less 
curved at the ends; leaves strongly falcate secund. Plants sterile. 
Dry sandy shores of Douglas Lake, Michigan, June-August, 1920. G. E. 
Nichols. No. 141. 
New Dorp, Richmond Borough, N. Y. 
LITTLE JOURNEYS INTO MOSSLAND 
VI. — The Mosses of Tree-Trunks 
George B. Kaiser 
Let us go to the woods. The student may there reap a veritable harvest 
of interesting mosses which grow on the trunks o\ living trees. In our groves and 
forests many trees indeed harbor a great variety ot bryophytes forming a distinct 
moss-flora of their own and these mosses add considei'ably to the beauty of the 
scene. It would be difficult to imagine how bare an aspect the woodlands would 
present without them. 
Those aprons of gray-green for instance. How thickly they clothe the base 
of the white oak and of other trees! These are likely to be composed of Thelia 
asprella, in autumn, when fertile, so thickly covered with capsules displaying 
conspicuous white peristomes. Under the microscope the papillae on the leaves 
appear delicately branched. Other mats on like substrata are yellow rather than 
