KEY TO THE GENERA AND SPECIES OF BRITISH MOSSES. 187 
BUXBAUMIA. 
1 louee plano-convex, glossy; ext. perist. ee seekewstenes aphylla 
Caps. se. flattened, paler; ext. perist. in 4 rowS .....se0eece00 indusvata 
CAMPTOTHECIUM 
1 {Sten Ww. vopiots radicular tomentum; seta smooth nitens 
Stem scarcely radiculose; seta rough lutescens 
CAMPYLOPUS. 
1 Hoawe with hyaline points 2 
Leaves without hyaline points 4 
Points long, leat margin incurved; n. of 4 strata below 
21 Points short, margin recurved above, upper cells r. flexuose; n. of 
3 strata, about 4 of abe OF TOME SiN AS sil aan brevipilus 
3 {ie auricled, dark-green, n. about } width of base..........+. atro-virens 
Ls. not auricled, git theres n. of base of leaf .....5...+0. introflexus 
4 (Ls. not auricled a 5 
| Ls. auricled at eal w. sae cells 8 
5 / Ls. short, straight, rigid, entire; n. usu. of 4 strata 6 
a alm. setaceous, serrul, towards apex; n. of 3 strata 7 
t. } in., not radiculose; n. about 4 base of leaf subulatus 
61 PL taller, densely compacted w. tome ntum; n. ¥ of base...Schimpert 
N. about 4 of base of leaf; Is. longly setaceous ....... Ph ated 
7 
N. about 4 base; ls. shortly setaceous, whitish heloaiasine.. Jfragr 
ah $widts or more of base of leaf 
about + of base. = 
ioe a st. w. a few radicles 10 
Ls. distant, serrate above; st. a not radiculose........0...... setifolius 
Ls. gradually subul., margin inflexed alm. from base ......Schwartzii 
10 sta argin infléred suddenly at 4 length, in long bubula coc Shausae 
u Ls. suddenly subul. for 3 length; n. excurrent seessensevseesese SLCLUOSUS 
Ls. short, gradually subul. for $ length; n. vanishing ......paradoxus 
CERATODON 
1 {Ls oblong: lanc.; n. not or sc. excurrent; caps. strumous. ~~ 
(Ls. ovate-lanc.; n. longly excurrent; caps. not strumous .... 
CYNODONTIUM. 
1! {coe smooth, strumous at neck; ls. not papillose 2 
Caps. furrow ed; ls. papillose 3 
Ls. cae HA seg lanceolate, semi-vaginant at base vir 
p| Ea ee suddenly subul. from dilated base ......... Wahlenbergit 
Caps. ae stra at neck 
3 iC aga strum trumife 
se, papillose; perich. Is. short............... gra acilescons 
atte wants, “faintly pap. at back only; perich. ls. subul. ...polycarpwm 
DICRANELLA. 
Ls. eicice RBA ce oneaee SQUAITOSC 0... seeseneeecrereeeesSGUATTOSE 
{rs lanceolate-subulate; pl. usu. smaller 2 
