134 KEY TO THR GENERA AND SPECIES OF BRITISH MOSSES. 
16 Margin strongly revolute to apex; Is. se. } line lon 7 
Ls. plan e at apex, margin m. or l. revolute below ouly SAsootr cere 18 
17 Ls. lane., acute; n. excurrent in a sharp point......... Hornschuchiana 
Ls. r. obtuse; n. forming a short mucro or vanishing ......... oluta 
be 
8 potas Is. Vv. Beep ceeesaaen exserted 
erich. ls. n 20 
19 its bout 4 as ness caps. narrowly oblong convoluta 
Ls. abbart 1 line, dull green; caps. elongate; pl. taller......commutata 
Ls. w. short points, obtuse or mucronate, usu. obl. or obovate ......21 
Ls. tapering to longer, m. or 1. acute points, lanc. or linea 27 
eb me thickahed towards apex atrovirens 
92, 
eeeereree 
21 
Ls. w.  thskoned border, lingulate, mucronate ...............Brebissont 
Ls. without thickened border 238 
23 {tsp mest, — rosulate above, usu. mucronate ........++ watinde H 
24 2 obase roundel or emarginate, dark-green latifolia 
pe 25 
25 Ls. pay pra pete caps. v. long; ay mies 
Ls. under 14 line long; perist. teeth free oe pier ca ar 
26 Slender; leaf-border of 2 pat eaarDly. a BES = sosveveeeee Ongustata 
{Roba st; bo oe indistinct or alm. none, not thickened......... erie om 
a7! Ls. w. plane margin, long and narrow es crisped when dry . 
(Ls. w se Tans, fae ecinped: margin recurved below 
28 ae asal hy aline cells ascending up margin of leaf 29 
Hyal. ells not sce at us iee than atcentre hibernica 
e, serrate squarrosa 
29 ipges not Bi wqtatrons, sertive oF or ‘ighily denticul. only 30 
30 4 . rigid, nate bigot » ADOY broken across Sragilis 
undulate 81 
g1 {Ls ¥: long, w. prey ip subdenticul. points ............... tortuosa 
es about 13 line long, entire, with short points inclinata 
2 eth wet» in a fine point; Is. rigid acuta 
: {Nery r below a 35 
33 ican 5 Tong, ng, contorted Is. acute, SORRY PADTLIORS,......0.00<000s000e .B4 
wisted ; tin seem less papiities ieee Soe | 
a4{} Ss. usu. recurved ; salla’e unded, incrassate .....s+sceeer 35 
Ls, not squarrose ; cells angular, r. abeoane: smaller 86 
35 eS seine recurved, v. papillose on back of nerve...... heen tt 
curved tow: ards apex, more hes 
in groshsorty ., long, spreading; ¢ OFRROTG « ccrtiaces ees cylt indrica 
Ls. lanc., straight, short a 1 ine) outs At i vo Vinealis 
° {Baal cells rt -rectangular ending 10 S008 ss 0cs rig edule 
> N. ceasing nelow the r. pire hoint ateecaeas ts rst 
i 
ecurved towards apex (seta erect) .........c.c00eeee00 
Ls. plo pte anata te pea w. long, narrow W points. penbeeppenst ak 
aps. er périst. single; ls. erecto-patent.........stricta 
| Caps. Sane pie ies, ri nil 3 
Ls. w. large, white, sheathing base ; 5c Lag cells echt one 
Ls. se. sheathing; upper cells short, alm. q 
(Seta erect; caps. exserted; Is. usu. gla ncous- +BTOOR vos..01.. pomiform 
> _ y. short, curved; ~— ni. or nr hidden in the ls. ...... Taliovisina 
— 
ic 
of 
aise Shei deer" 
