as British until I gathered it in the year 1833. So many habitats
have since been recorded for it, tbat it may be regarded as
a generally distributed form, if not species.
It most nearly agrees in character with C. albida, but the filaments
are coarser, and far more rigid, standing out from each
other when the tuft is removed from the water ; the colour is a
brighter and fuller green ; the ultimate branches are shorter and
more patent, often strongly reflexed, and the general habit is by
no means spongy.
It appears to prefer tbe clearest and purest water, growing on
the bare rock or among corallines in deep cold pools left by the
tide, near the extreme of low water mark. Where I have seen it,
both at Kilkee and Dingle, it could only be reached at spring
tides.
F ig . 1. Cl a d o ph o r a b e p r a c t a :■—i
3, 4. Eamuli :— more or less highly
3. Portion of a filament.