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P l a t e LXXXIV.
CLADOPHORA MACALLANA, Harv.
G e n . C h a e . MlamenU green, jointed, attached, uniform, branched. F ru it,
aggregated granules or zoospores, contained in the joints, having, at
some period, a proper ciliary motion. C l a d o p h o e a [Kutz.) from
Kka&os, a branch, and ffiplo, to bear.
C l a d o p h o e a m c a / t o a ; D O P H O E A J H d C a w t tw a ; fflaments setaceous, - o - - - ' y ^
loosely bundled together, excessively b ran ch ed ; branches alternate or
rarely opposite, zigzag, very p a te n t; ramuli short, recurved, simple, or
pectinated, obtuse ; articulations twice or th n c e as long as broad;
endochrome rather dense.
H a b . On th e sandy bottom of th e sea, in 4 -1 0 fathom water. Annual.
Summer. Dredged in Eoundstone Bay, abundantly, ilfr. Me Calla.
Gbogb. Distk. West of Ireland.
Desok. M o t not exactly known. FilamenU fqrmng crisped
bundles from six to twenty inches in length, rigid, bristhng (not coUapsino)
when removed from the water, of a rich, shining grass-green colour, iniich
branched, and inextricably tangled together, rather brittle Branches veij
flexuous or bent in a zigzag manner, frregular in length
times opposite, more usually alternate or seound; sometimes divided m a
sub-dichotomous manner, very patent, with 7
second and third series of smaller branches, and these clothed at shoit intervals
with short ramuli. Bamuli alternate or secund, very patent or reflexed,
short, cyKndrical, obtuse, either simple or more usnaUy P“ tmared
on thefr upper side with short, one- or two-jomted processes. veW
blunt Endochrome rather dense, recovering its form, in a degree, when
moistened after having been dried. In drying it very imperfectly adheres
to paper,
This handsome Qadophora was, in 1840, communicated to
me h y Mr. Mc’Calla, as a new species, but it was not until last
summer that I had an opportunity of seeing it in its place of
growth, and examining it in a fresh state. At Roundstone, in
Ammst I dredged it in considerable plenty, and convinced
myself that it was quite distinct from any described British
species; and as I have reason to believe it to he new to
botanists, it gives me great pleasure to give it the name ot
its discoverer, who has well earned such a tribute hy the many
additions he has made both to the Launa and Llora of the west
of Ireland; and who is now engaged in the preparation of an