202 KEY TO THE GENERA AND SPECIES OF BRITISH MOSSES, 
3 tee serrul. at apex, nerve usu. vanishing Heimit 
Ls satate nerve excurrent 4 
4 vein ¢ conic, obtuse or apiculate; 1s. ovate-lanceolate............ eesouaaer 
obovate 
5{ 
°iLs 
ei 
Lid m. or 1. beaked; Is. oblong or 0 
Ls. oe ta eso (oalyptea smooth) ; 
papl 
age ort, turbinate; leaf-cells thin-walled ..............66 ... truncata 
(Caps. oval: leaf-cells more incrassate littoralis 
iCal — above; n. excurrent in a long poin 8 
7) Cal. sm > 0. excurr. bi a short point (exc. oriniie) Beecretietsdetves 9 
8! (Caps. oval; leaf-cells r. lax asperula 
(Caps. long-elliptic; ae cells small (12—16 /4).........c...00005 Wilsoni 
one excurrent in a longish Saige crinita 
91 Nerv e excurrent in a short p 10 
10! Ls. pplong. in 5 ranks ; 5 Devs ahi aes intermedia 
(Ls. obovate-spathul., in 8 ranks, Me pe per. absent...... viridifolia 
11: Nerve peter ls. m. or 1. pi . 
(N. vanishing, Is. renee v. ae in a bulb-like tuft......... latifolia 
12 { Calyptra smooth; lid rostrate 13 
Cal. scabrous sprit ve; lid conic Starkeana 
3 | Leaf- -margin recurved, n. excurrent in ae pone .4::i.6.. lanceolata 
13 | Margin plane, n. gh rics in short mu cespitosa 
PSEUDOLESKE 
1/ ls. ST usu. denticul. at apex, n. alm. to apex...... patois 
1iks. entire, dark green, n. } or 3 length of leaf atenulata 
RACOMITRIUM. 
1 ae without ee points 9 
Upper ls. with diaphanous points 7 
9 | Nerve 2-winged at so a seta arcuate .patens 
2 i Nerve n ot winged; seta erect 3 
g/ Ls. apillose; upper cells a ; st. w. many short brs. ...fasciculare 
8 iis. am ~ : oth; anes ells hae brs mosily dichotomous = eres 4 
4 | Caps. round-ovate, hard; ls, stole BDOVO civevessss. veellipticum 
(Caps. longer; ls. of 1 layer of cells 
5 i oblong, v. pine i n. not mem the usu. toothed apex...actculare 
Ls, narrow e taperin, 6 
entire, mor 
6 Tall, loosely itukdtad: n. BE Bg ‘easing in apex 
Small, dense tufts; Is. smaller, anishing... [var “of icterostichum) 
7 “7 with simply Ben irntete hyaline bccn B weiss 
Ls. with eroso-serrate hyaline po oi 7 
g | Brs. fastigiate ; caps. v. small, on ne rt seta - sudeticum 
8 Brs. fase: alate: caps. and seta longer; basal ‘cells 3 nacrower Werte 
g | Upper cells of Is. sho ort, osm in type) long........ Re nai he aiken 
Anan cells one eee us (a doubtful native) ..... ++Microcarpon 
10 { Ls: v- papillose g above middle; seta smooth ...... canescens 
im sieneth (exe. peor ; - reaching apex; seta ‘tg Lamapiacema 
RHABDOWEISSIA 
Ls. acute, alm. en —~ t. short, subul., et saved 
‘ per r. obtuse, soashed: above; perist. t. t. longer, | raaihihe ae ~— 
io small; Is. narrow, SR, aR Be WIRG fhe cred ie 
--.denticu 
(Pl. 4—1 in.; Is. broader, coarser toothed, cells 14 .........crenulata 
