40 KEY TO THE GENERA AND SPECIES OF BRITISH MOSSES. 
* 
Ber ee) usu. og or ascending, simple or perpen” 
. rarely w. true lateral branches; leaf-cells quad- 
ae rounded, oF aber hexagonal, rarely (as in Pina, evs 7 
Stem (Pleurocarpous) usu. prostrate or creeping, often long an re 
many lateral branches; leaf-cells most oe rhomboid or 
linear, or ite or rounded, se. ever quadrat 175 
124 (Ls. w. long, narrow, subulate or setaceous points 125 
| Ls. without toke pabatste points 134 
a5 ! N. v. eth about 4 or more of width of leaf near base ............ 126 
cod Nerve narrow 128 
og { LS: su renee narrowed ae base to a long subula ............ rere by 5 
26 | Ls. more gradually subulat +++ Campyloy 
127 Basal auricles of Is. large sist sti Di lonti 
Basal sitricies slightly dovstoned or ahs en Dicranum 
128 | Ls. auricled with enlarged, brownish, eis cells 129 
(Ls. without dilated and coloured angular cells 130 
Ls. entire, much crisped when pil Dicranoweissia 
a seeing not erisped, r. short, not or se. secund india 
Ls, usu. ate, rarely crisped, me BUCH  casccce cssnce Dicranum 
130! Ls. much esenar when dry 131 
(Ls. not or only peer crisped 132 
131 Leaves serrulate abov Cynodonti 
Leaves entire, or stibentive Barbula 
132 (Ls. acon at back from projecting cell-partitions ...........++..06 103 
| Leaves smooth 133 
133 St. tall, flexuose ; Is. long, alm. ee ane Ditrichum flexicaule 
Stem and Is. short chum,  Bicranlt, Seligeria, &e. 
134 (Ls. w. strong, cartilaginous, me bor nium 
es without cartil. border (or bordered — aabeatien) Saiunesiibiebais 135 
13 5! s. large, roundish, entire, obtuse or apiculate 136 
(Plan — La 3 purien entire leaves 138 
{24 ot bordered; or |. ciliated near 98s ...Edipodium 
1364 Ls. a bordered, atte greene or widely DOXAE.. osc dvcons Splachnum 
\Ls. rder a (exe. M. cinclidioides, w. long, narrow Saliay pecueciss 137 
(Ls. strongly apiculate Cinclidium 
187i Ls. 0 or obscurely apiculate Mnium 
Pl. hese ada’ globular heads of gemmee ...........- Aulacomium 
138 ; Pl- w. terminal gemmiferous cups w. Shcsntaie Me keksckve . Tetraphis 
Pl. without Seeniitrial — or stalked masses of gemM «.......040. 139 
139 ‘Ls. (often serrate) w. brownish, swollen, = ie evens Dicranum 
“ (Ls. without coloured tel of swollen ¢ 140 
1 40: w. basal cells strongly nodulose, v. narrow ......... Racomitrium 
\Ls. without long nodulose cells at base 141 
141 (Ls. with cells m. or 1. elongate in upper half 142 
(Ls. w. upper cells short, m. or 1. quadrate or rounded 150 
142! { Ls. Lee eer from Projecting ct a, serrate 148 
(Ls. not papillose; serrate 144 
143 (Pl. in ge v. Minas oa. ae ‘ae WD O cscs sctciee ---Conostomum 
(PL usu. larger, less densely tufted 103 
Ls. soft, cells fone ig soiree at the e 
144) Ts. fs firmer; ¢ either w. flat tg ee pointed at the ends 
and po Bees wide or Senin 
