Ser. CHLOROSPERME2. Fam. Confervee, 
Puate LXXXIV. 
CLADOPHORA MACALLANA, Zar. 
Gen. Cuar. F/aments green, jointed, attached, uniform, branched. Fruzt, 
to} 3 3 3 Df 
ageregated granules or zoospores, contained in the joints, having, at 
some period, a proper ciliary motion. CraporHora (K7tz.)—from 
Kddos, a branch, and ¢dopéo, to bear. 
CrapopHora Macallana; filaments setaceous, rigid, full green, very flexuous, 
loosely bundled together, excessively branched; branches alternate or 
rarely opposite, zigzag, very patent ; ramuli short, recurved, simple, or 
pectinated, obtuse; articulations twice or thrice as long as broad; 
endochrome rather dense. 
Has. On the sandy bottom of the sea, in 4-10 fathom water. Annual. 
Summer. Dredged in Roundstone Bay, abundantly, Mr. Me’ Calla. 
Groer. Distr. West of Ireland. 
Descr. Root not exactly known. Filaments forming crisped subcylindrical 
bundles from six to twenty inches in length, rigid, bristling (not collapsing) 
when removed from the water, of a rich, shining, grass-green colour, much 
branched, and inextricably tangled together, rather brittle. Branches very 
flexuous or bent in a zigzag manner, irregular in length and disposition, some- 
times opposite, more usually alternate or secund; sometimes divided in a 
sub-dichotomous manner, very patent, with wide axils; furnished with a 
second and third series of smaller branches, and these clothed at short in- 
tervals with short ramuli. Ramuli alternate or secund, very patent or re- 
flexed, short, cylindrical, obtuse, either simple or more usually pectinated 
on their upper side with short, one- or two-jointed processes. Apices all very 
blunt. Endochrome rather dense, recovering its form, in a degree, when 
moistened after having been dried. In drying it very imperfectly adheres 
to paper. 
— A 
This handsome Cladophora was, i 1840, communicated to 
me by Mr. Mce’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 
August, 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 be new to 
botanists, it gives me great pleasure to give it the name of 
its discoverer, who has well earned such a tribute by the many 
additions he has made both to the Fauna and Flora of the west 
of Ireland; and who is now engaged in the preparation of an 
