— 283 — 
— Caleareous stones and walls or (in Amer.) on earth, not 
common. Eur. Switzerl! Austria: Breidler. Norway: Zetter- 
stedt. Amer. Can: Macoun; Drummond 114. 
*D.xanthopus Kindb. — Desmatodon Kindb. cat. Can. m. 
Leaves less chlorophyllose; costa greenish. Capsule larger; 
teeth more united; pedicel yellow not red. — On earth r. Amer. 
Can.: Macoun. 
2.D.camptothecius Kindb. — Desmatodon cat. Canad, m. 
Differs from D. cernuus: Leaves narrower and longer, sub- 
obtuse gen. entire, nearly smooth, reflexed only near base; 
costa greenish. Capsule arcuate pale brown or pale red; teeth 
short cut in 2—4 partly cohering segments; lid with oblique 
beak; pedicel flexuous arcuate when young, reddish yellow. —- 
Rocks near Atlantic sea r. Amer. Can.: Macoun; Waghorne. 
118. Weisia Ehrhart. 
A. Leaves long narrow, serrate at the broad base, at least 
the perichetial. Dioecious. Stem us. high. 
I. Eucladium. Capsule long-exserted; lid deciduous; teeth 
more or less cleft; annulus persistent or indistinct. Leaves not 
recurved, gen. faintly crisped when dry; cells pellucid; costa 
excurrent. i 
B. Leaves broad entire crisped. Monoecious or paroecious. 
IL Pseudo-Pottia. Capsule long-exserted; teeth often present; 
lid deciduous. Leaves concave often recurved; upper cells 
small; costa sometimes excurrent Habit of Pottia. Stem low. 
Leaves entire narrow gen. sublinear. 
a. Leaves often involute us. crisped; costa often excurrent. 
. Stem low. Often monoecious. 
= II. Astomum. Capsule not emerging above upper leaves; 
lid persistent or loosed with difficulty; teeth none. Stem very 
short. 
IV. Hymenostomum. Capsule long-exserted; lid deciduous; 
teeth none. Leaves crowded; costa excurrent. Monoecious. 
V. Eu-Weisia. Capsule long-exserted; lid deciduous; teeth 
present at least rudimentary, us. entire. Leaves crowded; costa 
Sometimes not excurrent. X 
b. Leaves not involute and not or slightly crisped; costa 
. mot excurrent, Dioecious. Stem often bigh. 
Vl. Hymenostylium. Capsule without peristome; lid systylic; 
annulus none. Leaves partly recurved; upper cells more or 
less pellucid. 
