114 THE JOURNAL OF BOTANY 
attempted to give descriptions of the h apeanper varieties which 
in the past have been named. ne t the examination of original 
specimens this would in the of most species be wo 
useless, as it is not possible mg the Aanorlons of the varieties to 
tell to which of the segregates many belong. 
With the description of each species I have endeavoured to give 
the synonymy only so far as this is necessary to bring into line the 
names in Dixon’s Handbook and Braithwaite’s Monograph with those 
here used. full synonymy will be found in Cardot’s Répertoire 
iy hii (1897). With the aa cagee of removing the confusion 
arisen from the description he numerous analogous 
ie of different species under different names, Russow has 
suggested that the same terms should be used in ea cies for 
hief of these are—orthocladum instead of 
strictum, when the peaches are erect ; anocladum when the branches 
curve outwards; catocladum instead of deflewum; dusycladum for 
ag he eurycladum instead of lawum; mastigocladum for flagel- 
— ra isi adum, mac ie ee -/ segaponcnteiges branche s of medium 
is e ches) ; aoc fei h t anches) ; pachy- 
gta (with thie branches), &c., and various pin cera of 
these terms. e sake of ere these terms will be employed 
in the following a ens of species. 
Cuavis ro THE European Species or SpHAGnNuM 
(arreR WarnstorF (1899)). 
1. Cortical cells of stem and branches bene spiral fibrils ; 
br. 1. always truncate and toothed at t 
1. Cortical cells of stem and branches with sie fibrils; br. l 
pex cucullate, not truncate and toothed, but ee 
narrow hyaline border .. . 23 
2. Chior. cells of br. 1. in section tiangalar to eats 
inserted between the hyaline cells on the inner surface 
of the leaf, and free either only on the inner both 
surfaces ; hyaline cells more sibatad convex on the outer 
surface ; not papillose 3 
2. Chlor. cells of ov 1. in saeetiod ichasirulas to wasice sid, 
inserted between the hyaline cells on the outer surface 
e n bo 
arnt hyaline cells os strongly convex on the inner 
ace; inner wall of the hyaline cells where they are 
ciniéed to the chlor. wile with or without papille . . . 10 
2. Chlor. cells of br. 1. in section elliptical, barrel-shaped to 
rectangular, median or in 9. compactum nearer the outer 
wietate : either enclosed by the hyaline cells on both 
surfaces or free on both; inner wall of the hyaline a 
where thiey are united to the oe cells Ne = 
more rarely with, papille 15 
