— MIN. oe 
Db. Leaves entire not sheathing: Tufts dense. 
IV. Desmatodon. Leaves short broad gen. reflexed, crisped; 
basal cells long somewhat large and hyaline; costa often long- 
-excurrent. Peristome straight. Habit of Barbula (Zygotrichia). 
Often monoecious. 
V. Eu-Didymodon. Leaves reflexed us. short, r. twisted when 
dry; cells small gen. short, the inner basal us. rectangular 
yellowish; costa gen. not or slightly excurrent. Peristome some- 
I twisted. Habit of Barbula (Eu-Barbula)  Dioecious often 
sterile, 
LB. Leaves gen. dentieulate, not imbricate, sometimes with 
propagula; cells somewhat large; costa not or shortly excurrent. 
Peristome r. present. : Us. dioecious. qa: bral 
VL. Leptodontium. Leaves dentate or denticulate, often not re- 
flexed, gen. broad and obtusate, often crisped when dry; basal 
cells at least the lowest rectangular hyaline. 
Hydrogonium. Differs from subg. Leptodontium in entire 
E leaves, 
I. Stegonia Venturi revue bryol. 
I.D.latifolius Schwzegrichen. — Weisia. Schw.; Didymodon 
 Kindb; Pottia C. M. 
Leaves orbicular or subcochleariform gen. obtuse, sometimes 
apiculate or with long hairpoint; upper cells subrhombic, the 
lower hyaline longer; costa abbreviate or percurrent. Capsule 
suboval or subcylindric; teeth pale red. Spores 0,03—0,04 m. m. 
| Tufts low gréen somewhat silver-like. — Earth on alp. rocks. 
Ew. less r. Norway, SwitzerLl | Austria: Breidler. Amer. T. 
Can.: Macoun; Drummond 70. ' 
IL ‘Trichostomum Hedwig, in part. 
1. Pusilli. 
.2J.triumphans Notaris. — Trichosto 
Kindb. ! 
> Leaves lanceolate-linear acute or obtuse; costa short-excurrent. 
Perichetial leaves sheathing. Capsule oval; pedicel pale yellow 
Or at base reddish. — Earth and walls-r. Eur. princ. in Me- 
diterr. distr. France: Philibert. 
D.monspeliensis Schimper: — Trichostomum 
Kindb. 
_ Leaves concave, the perichetial with percurrent costa. Annulus 
simple, — Eur; r. »France»: Schimper. 
*D.Philiberti Schimper. — Trichostomu 
Kindb, . | ! 
mum Not.; Didymodon 
Sch.; Didymodon 
m Sch.; Didymodon 
