— 185 — 
decurrent. Upper leaves densely mamillose-serrulate nearly all 
around. Tufts high compact tomentose, green above. — Swamps 
in higher alp. region r. Ewr. Norway in Galdhoe 1800 metr. 
a. B.: I. Hagen. 
: 90. Dichodontium Schimper. | 
= Å. Leaves obtuse or subacute at apex: perichetial similar 
but more distinctly sheathing. Male plants in separate tufts; 
perigonial leaves with percurrent costa. 
1.D.pellucidum L. — Bryum L.; Dichodontium Schimp. 
- Leaves channelled from suboblong base sublinear or sometimes 
ovate-oblong, undulate and scarcely reflexed, us. nearly crowded; 
inner basal cells narrow hyaline, the others quadrate; costa per- 
current. Capsule oblique inclined; teeth purplish below, orange 
above; lid rostellate; pedicel long yellowish or pale red. Tufts 
k or brown green. Dioecious. Leaves very variable in size. 
— Wet rocks not uncommon. Eur. Norway, Switzerl.! Engl.: 
Holt. Amer. Can.: J. Macoun; Moser; Waghorne. Alaska: J. M. 
un. 
*D.fagimontanum (Bridel as var.) Kindb. as subsp. 
Leaves small subovate-oblong nearly entire: perichetial longer 
. acuminate. Capsule smaller; pedicel short reddish. — Rocks 
_ % Eur, Switzerl.! Engl: Rogers; Cunliffe. Amer. Can.: Macoun; 
Jrummond. 
 2].flavescens Dickson. — Bryum Dicks.; Dichodontium Lindb. 
. Differs from the last: Leaves longer and more serrate, less 
. Mamillose, distant. Capsule subsymmetric or symmetric, not 
9r faintly inclined; teeth orange. Tufts not or sparingly radi- 
. Culose, bright green or green. Very r. fruiting. — Wet often 
. Submerged rocks r. Eur. Norway fruiting, Germany! Sweden 
. fmit: P. Olsson. France fruit: Lamy, com. Husnot. Amer. 
Can, fruit: J. Macoun. Alaska: J. M. Macoun; eT. 
ť A Leaves acute at apex; the perichetial much different. 
Male plants mixed with fertile; perigonial leaves with -not per- 
. fürrent costa. » 
 9.D.subflaveseens Kindb. in Hedwigia 1896 p. 59. i 
"Leaves channelled from suboblong base tapering to an atte- 
. Ruate acumen, serrate often: to below middle, long distant nearly 
. Bmooth; cells and costa as in the last. Capsule symmetric 
. 8,&et; teeth dark purplish; pedicel long pale red. .Perichetial 
. leaves narrower than the others, long-acuminate and gen. subu» 
tate, in upper part of acumen nearly filled. by the percurrent 
or excurrent costa. Perigonial leaves large. nn 
LA 
