904 KEY TO THE GENERA AND SPECIES OF BRITISH MOSSES. 
5 { St. Is. v. large, not or se. bordered, 3-toothed at apex............. oeeers 
St. ls. distinctly bordered, not toothed (exc. Lenellwm). ovecrccseovarseces 
6 St. ls. v. short, rounded; br. ls. phe At v. obtuse ...... a. 
St. ls. longer; br. ls. ovate, usu secund < 
St. 1s. toothed at apex; h. c. of fbr. is. short and wide; bien 96> of 
7 brs. v. large, recurved at tips enellum 
St. Is. iiot toothed; h. ¢. narrow; retort-cells smaller .........-ssssee 
8 Cuticle of st. in cae ieee: h. ¢. Very POTOUS «...+40- subsecundum 
Cuticle in 2 or 3 layers; h. c. with fewer pores 
9 St. ls. narrower at the base than fo the fringed apex 10 
St. ls. not narrower at base than at apex 11 
10 St. ls. v. obtuse, fringed all round sommit pl. pale........, Jimbriat 
os = fringed only at the Wnbcated a OS RE Rc eR Lindberg 
1! t. ls. not or scarcely bordered 
{St < broadly bordered below with narrow cells i 
12! (St, Is. 3- olatonte = — br. a x Se poms molle 
(St. > br. Is. or 1, squarrose ........: 13 
13 eet -cuticle of 4 ee br. oe aie eed middle...... i jueght oda 
Cuticle usu. 3 or 4 layers; br. i peoarved at apex only ........... .teres 
ilar Bs Is, ea and Hid: at See when dry, pores gett: SON eM 15 
meave and not undul. when dry, aire Y. UMERW vescecvessascss 16 
15 Pendent "bs. Paty the stem; = ls. sper intermedium 
Pendent brs. 0 or few; st. Is. usu. fibrillose above oveiuileve cuspidatum 
oie 2 sohepicg truncate and fringed ; pl. yellowish............... strictum 
. or l. pointed, usu. eotived ; pl. often veda sicltiidiietens 
— ; st. ls. usu. w. fibres; br. ls. narrow-lanc.......acutifoliwm 
Dioicous; St. ls, rarely w. fibres; br. ls. alm. elliptic ......... rubellum 
| (Te. roundish, entire, peti Be stl pcos, v. large...vasculosum 
Lites, acute, w. longish ac often 2 
2 re pophysis roundish-ovate, ei wider than ig a erase .- sphericum 
Apophysis large, pyriform, tapering below............++++. sO ictown 
SYSTEGIUM. 
1 Uppe ls. eo margin cebeeep above....... seeeoee CTISPUM 
hse ls. 1 mee acute, margin plan 2 
erich. Is. Perire ; ls. crisped when rey multicapsulare ~ 
oak few, ies ‘divergent; Is. sc. crisped Mi ittentt 
SPR RSet eee eee eer ee 
TRAPLO: 
1 eon toothed above; seta se. longer than Tony DOIG sereienevacs engenais 
Ls. entire; seta longish, red 
THUIDIUM, 
1 {eee bi- ca tri-pinnate 2 
te: m simp! yp pinnate 2 
Bipinnate; apical cell of br. ls. crowned w. peau diarieeds recognitum 
De aaste! 4 ; apical cell acute; perich, ls. ciliate ........ tam fons 
37 St. ls. not auricled 
_o m rigid; 1s. papillose on keel; cells shortly oval ni cre 
3 { St. Is. subsquarrose, auricled w. large swollen celle shoedeveeys enoks 
4 
Stem flexible; Is..smooth on n keel; cells elongated : nidowis 
TIMMIA, 
TUES creel, oper , of one length; n, smooth on inner face ......austriaca 
longer; n. papillose on inner face......norvegica 
