KEY TO THE GENERA AND SPECIES OF BRITISH MOSSES. 205 
TRICHOSTOMUM (see DIDYMODON). 
ULOTA. 
1 Pe imbricate and rigid when dry, S. BhOrt sis iieil weseiowd Hutchinsie 
Ls. m. or 1. crisped when dry, lo mete 2 
af Upper ls. tipped w. gemme ; wistiout rege — ivinwees p fedoras 
Ls. not siauciidervas at tip, usu. dilated a 
3 { Caps. smooth below, plic. and v. contra saa at pany diceveyen ps 
en striate in whole length, less, or not contracted .........++e+sessee0s 4 
4 i eeping; perist. usu. single; Is. little crisped......... Drummondii 
St. no creeping; perist. double; ls. much pints when dry ......++6 5 
5 Oene contracted at mouth when dry, much exserted............ ee 
Caps. not contracted at the South itse 
: es sy soto - Ste hairs; Is. w. submarginal band of-v. a — in 
escens 
Caly pir : ee ls. without such a band 
7 {Geb we were just below mouth when dry erispa 
contracted, less tapering at ‘Honk 8 
af Cape ra pare twied as long as it is wide intermedia 
Caps. not much longer than it is wide; pl. small erispula 
WEBERA, 
1 | Ls. wide-ovate, bordered, enbigwy m os nearly to apex ......0 Tozert 
Ls. not (or se.) bordered, n. usu. lon 2 
9 Ls. v. decurrent, lower ones obtuse ; dhe red within......... Ludwigtt 
| Ls. not or se. decurrent; tufts not red, exe. the stems ............ iota 
{peri much a ae clavate or oblong; processes of inner 
perist. not or sc. cleft at 4 
Comal Is. less elong.; caps. eee processes widely/el Cle seid... 7 
a Synoicous or dioicous; ls. v. shining; caps. oblong cruda 
Monoicous; caps. narrow, usu. w. long neck 5 
of Male flower gemmiform, terminal on a branch ...............acuminata 
Antheridia ‘naked in se of comal Is. 6 
6 { Caps. w. neck as long as sporange; cilia usu. present ........ elongata 
hse “8 oid than sporange; cilia 0 or ire Sabie po dyworpha 
q cep Cap rt, A aiecadalas leaf-cells over 1 S 
Cape. Mite (exe. pule chella ), annulate ; sells Bey 15 p wide.........9 
8 Ls. escapes -green; st. red; perist. t. arenes or brown......... albicans 
Ls. green; stem usu. pale; perist. t. r carnea 
9 { Caps* shortly obowte (pl. he me Similar tO carned).....+... _p wionelie 
Caps. or l. p 
10 Dioicous ; snes ls. ca se geet: wee nixed w. gemme.. poser 
l Monoicous, antheridi game AP . ceasing “id iy RPOK sigue 
ll i lanceolate, acute, serrate a nutans 
Ls. ovate-lanc., subacute or ie, AINA. CHEEEO ssc nececcese sts cucullata 
WEISSIA. 
1 rial at involute above middle viridula 
M i plane mucronata 
ZIERIA. 
1/1: widely ovate, v. imbric., margin plane, n. not excurrent. julacea 
Ute lanc., less imbric., margin recurved, n. excurrent -demissa 
ZYG@ 
1 fiat: ls. recurved, irregularly sing at apex ceases esate cbsartsere™ 
| Shox rter, usu. under 1 in.; Is. en’ 
eee eee ee 
