— 5 — 
TRICHODON BOREALIS, N. SP. 
R. S. Williams. 
Dioicous, male plants 3 to 5 mm. high, bearing i to 3 brownish buds, 
growing in readily separating green tufts with mostly simple stems radicu- 
lose at base and up to 5 mm. high; stem leaves gradually larger upward, the 
upper about 2.5 mm. long, from an ovate, clasping base rather gradually 
narrowed to a spreading-flexuous, subulate, grooved point more or less rough 
on the back, the narrow leaf blade usually extending nearly to apex with 
borders flat and obtusely denticulate or crenate often to the enlarged base of 
leaf; costa percurrent or slightly excurrent, often faint at base, up to 40// 
wide; leaf cells irregularly rectangular, the median about 6/^ wide and 8 to 
long; inner perichaetial leaves about like upper stem leaves but with 
broader, more clasping base more abruptly narrowed to a spreading, rough 
point; seta brownish, flexuous, 5 to 7 mm. long; capsule oblong, nodding, 
not quite straight, about i mm. long without lid, the median exothecal cells 
about i6/f wide and up to twice longer; stomata few, in one row at base; 
annulus 40/^ wide, of 3 rows of cells; peristome teeth reddish brown, finely 
papillose, at base only nearly smooth, divided into 2 forks to a little above 
the rim of capsule, the articulations distinct, 8 or 9 in number, somewhat 
close together below, gradually more distant upward ; lid conical, its height 
not much exceeding its basal diameter, with border sinuous or somewhat 
notched; spores smooth, up to 12/4 in diameter; calyptra about 1.25 mm. 
long, smooth at apex, the base not quite entire. 
Collected near Dawson, Yukon Territory, July 9, 1899. 
This moss wasiound, nearly concealed among various other species, on 
damp earth in a small ravine just back of Dawson. I obtained but a very 
small amount although spending some time in searching for more specimens. 
It differs at once from Trichodo 7 i cylindricus by its capsule only one-half as 
loag in proportion to its width, by its much shorter lid and by the perichaetial 
leaves more entire. The plant seems to be much nearer Trichodon oblongns 
Lindb. found in Spitzbergen and Norway of which 1 have been unable to see 
specimens, but this latter species is described and figured by Roth in his 
Europ. Laubm. i; 270. 1903, where the lid is shown to be relatively about 
twice higher than in the Yukon species, the peristome teeth have 4 or 5 arti- 
culations close to their base and they are described as being pale and nearly 
smooth, also the annulus is said to consist of i ’or 2 rows of cells and the 
spores to be 14 to 16/4 in diameter. New York Botanical Garden. 
PALUDELLA SQUARROSA IN VERMONT. 
E. J. Winslow. 
While collecting in a sphagnum bog in Brownington, Vermont, last July 
I came upon a moss of striking and unfamiliar appearance. Tho the 
moss seemed fairly abundant, it grew so mixed with the spagnum and other 
mosses that I collected only a small amount. 
