44 KEY TO THE GENERA AND SPECIES OF BRITISH MOSSES. 
215 ise dendroid; Is. serrate va aie pl. tall, rigid... Thamniwm 
St. not den = id; Is. —— , or finel errul. near APEX o.cecsoscese 216 
21 6 { (Ls. v. obtuse, small, ova eee eacien or bipinnate ...... Leptodon 
(Ls. acute, oe Kahtcael and sees te 217 
Caps. immersed oe sei — ovate, entire ............ Cryphaa 
Fone. once exserted ; plant often : 218 
218 { — ceasing about eons up Fis leaf 219 
( Nerve reaching nearly or quite to apex 221 
919! ( Ls. sere above; st. Is. larger than br. Is. ......... Heterocladium 
(Ls. entire; st. Is. not larger than br. ls. 220 
990 | (Ls. soft, smooth, margin plane; cells rather lax ............... Myri 
(Ls. subpapillose, — re a exed; pl. v. slender......... Pendiddborbea 
221: (Ls. s' smoo th, serru Lescurea 
(Ls. Sen pire rion SPapuiitentea atrovirens) 222 
992 | { Ste: so , 8toloniferous; cells usu. opaque ............ Anomodon 
(Plant not a Boren : ae more distinet 223 
993 | { Capsule erect; ls. quite en Leskea 
(Caps. m. or l. cernuous; ae usu. serrulate at apex ...... Pseudoleskea 
294 (Ls. without recurved teeth at ioe 25 
| Ls. with sharp recurved teeth at apex, margin pio rch 
bric 226 
5! (Ls. v. plicate, w. long narrow acumen, m. orl. imbricate ......... 
22 (Ls. not ion or plicate with shorter points 
Ls. lanceolate, tapering alm. from base (cells linear) ............008 227 
226115, wider at base, ovate-lance PUNO civic icc re vecesececsaeee B rachythecium 
Stem cr —s branches incurved; a erect ......Homalothecium 
227 (Se: uree ; Is. usu. yellowish; caps. MONE. coc esis oes Camptothecium 
Caps. steer stem siete bare ans itapidied above 229 
228 (Caps: . or l. cernuous or inclined; stem not dendroid ............ 230 
229 | r. ls. obtuse, plicate, come dade errate ae Bede aap pce snenk Climacium 
tie not plicate, rather acu e, serrulate only Isothecium 
230 | Ls. v. concave, imbric., w. ome genicul. apiculus...... Brachythectum 
(Ls. without long sharply b 231 
ine —— or very sina epuiclabe 932, 
23111, {Li e or acumin 233 
2 i sais cells lin Hy pnum 
= (Ls. serrulate, cells oor shorter and wider 233 
933! Lid of caps. with a long beak (Is. often serrulate) 234 
(Lid conic, acute or shortly apiculate only O35 
234! St. i ini br — ee stoloniferous ........++++ Rhyncostegium 
(St. often pinnate, Eurhynchi 
(Seta si ecu ls. ial entire 228 
285 | {Seta eaiela se or in part 238 
936: ; Ls. alm. squarrose, w. long fine acumen (cells linear) ...... Hypnum 
(| Ls. erecto-patent or subsecund 237 
237 ie» w. distinct swollen rage ae _ nea, linkar: ...65Gys Hyp 
(Ls. not (or se.) auricled; cells WHEE sckesactevicess Ambli etic 
238 | ‘Celle eas linear; Is. v. Souenres ‘brs usu. incurved .. ..Scleropodium 
(Cells narrowly hexagono-rho yy 
