x 
186 SPRUCE ON CEPHALOZIA. 
description given of several species new to our flora, and the 
exhaustive notes on those hitherto little known or misunderstood. 
= those published for the first time are Cephalozia heterostipa 
et Spruce, found on Ingleborough by Dr. Carrington, and on 
se Glyders, North Wales, by E. M. Holmes. Cephalozia Jackii 
Limpr., which is fully i but not — for Britain, has 
re ecently been ops Sane ni the author amongst specimens 
collected by the late Wm. Wilson near Warrington. Cephalozia 
leucantha §., mae od by J. Sim, Potarch, near Banchory, Scot- 
d. 
mouth of an old copper mine near Tyn-y-gro es, North es. 
Amongst those of our British species, which have hitherto been 
only announced as British, but not described, are ——— 
fositans —— C. multiflora S., C. Scag (Hiiben ), C. elachista 
(Jack); and in the appe endix is given a description of Anthelia 
Juratzkana “Leen which was found dately y W. West in Scot- 
land, and announced in our journal at the as as new to Britain. 
In the appendix is given a description of the following genera 
nearly allied to Cephalozia: Hygrobiella §., Pleuroclada §., Arach- 
i 
first is relegated J. laaifolia (Hook), which had previously been placed 
by Lindberg amongst the Cephalozia, but which differs from them 
of radicles, and by the female flowers being constantly terminal, 
with a very lax but trifarious involucre. Two other — of 
recent discovery were added to the genus by the sain, i 
carpa Carr., and J. nevicensis Carr.; but in our annotated sey he 
has adopted a new subgenus, proposed by Prof. To (Eremo- 
notis), for J. myriocarpa, a species differing from J. laxifoli 
in the absence of stipules, the cell- asestarss: er the bifarions 
pales Another species, about which much doubt exists, 
Pleuroclada is proposed to contain J. albescens Hook, which had 
been assigned by Dumortier and others to a but from 
which it is dintingeiahed by its lateral and subpinnate ramification, 
bluish white colour, very fleshy perianth, and fiber prtiecrr 
The genus Arachniopsis 5., so-named on account of 
different — comprised in it forming broad thin films, like 
spider’s webs, contains some most beautiful forms. Three species 
sd are knee, all found by the author in South America. 
w genus Mytilopsis S., ‘‘ having leaves so equally and closely 
noeinlonte, that they resemble in miniature a Sipe od 
bivalve shell, such as that of the mussel;’’ hence the 
approaches nearer to the genus Micropterygium, but is distingiiahod 
trom it by its very flat and frond-like stem, with branches sprin 
rom the under side, as in Cephalozia. This fine = is repre- 
sented by only one known species, Byalopes albifrons 8 
