— 278 — 
Switzerl., Norway! France: Le Jolis. Amer. Can.: Macoun. 
U. S.: Henderson, com. Cardot. ia 
b. Leaves smooth. Peristome often rudimentary. 
25.D.luridus Hornschuch. — Trichostomum Spruce... . 
Leaves ovate oblong. or broadly ovate-lanceolate acute, nearl 
appressed when dry; cells short; costa percurrent. Capsule oval- 
oblong: or subcylindrie; pedicel red. Tufts finally lurid-brown. 
— Rocks and stonewalls. Eur. not r: in’ warmer distr. Swit- — 
zerl! Engl: Holt. France: Husnot. Germany: Herpell. Amer.r. - 
Can. Macoun.: U: 8: Mrs L. C. Feely. e 
26.D.Lamyi Schimper; Husnot. ; iue nA A 
Differs from the last: Leaves slightly crisped; basal cells long 
hyaline; costa slightly excurrent. | Pedicel yellow above. Tufts 
dark green. — Rocks r. Eur. France: Lamy, com. Husnot. 
27.D.cordatus Juratzka. — Trichostomum Milde. 
‘Leaves broader than in: D. luridus, subcordate at base, eur 
ved when dry, often short subovate; costa percurrent or slightly 
excurrent. Tufts green often with propagula. Capsules un- 
known. — Schistose and calcareous rocks r. Eur. Switzerl.! p. 
Italy: E. Adlerz. Germany: Herpell. oho 
< B. Leaves narrowly. acuminate. ! an "EO 
à. Leaves gen. papillose, faintly twisted. when dry. Tufts 
us. low and -fuscescent i [ 
28.D.rigidulus Hedwig. — Barbula Mitten. diga 
Leaves from long ovate-lanceolate base tapering to the nar- 
row nearly as loùg acumen, with thick reflexed borders; nearly : 
straight when moist; the upper part of acumen nearly filled by - 
costa; lower basal cells often long. Capsule oval-oblong oF - 
cylindric; teeth ‘not contorted but us. faintly twisted; pedicel 
red. — Rocks and stonewalls.’ Eur, not r. Sweden, Norway, 
Switzerl.! Scotl: Fergusson. Amer. r. Can.: Macoun.."U. 8 
Roell. fi Lu i 
29.D.validus Limpricht. | " odeoEA | 
Leaves smooth from ovate-oblong base tapering to anot long 
acumen, gen. with thick reflexed borders, nearly straight when : 
moist; cells gen. short; costa thick often long-excurrent. Cap- 
sules unknown. Tufts brown loosely cohering, about 1 e. m. 
high (»5 c. m. or more»: Limpricht). — Calcareous alp. rocks r. 
Eur. Austria: Gander. | olad abolita 
30.D.Dieekii Brotherus: — Barbula Broth.; Didymodon Kindb. 
Leaves) from) broad ovate-oblong base: abruptly narrowed io 
the. subulate not longer acumen, flat. above, not or. 
