Var. 8. Polleafenii ; frond proliferous, the young segments broadly obovate, 
rounded, very entire, or bifid. 
NrroPHYLLUM PoLLEXFENI, Grev. MSS. in Herd. 
Var. «. fimbriatum ; segments broadly obovate, frmged with narrow, forked 
processes, 
Haz. Attached to various Alge, in pools at the extremity of low-water 
mark ; but, more abundantly, and of much larger size, beyond the 
tidal influence in 4-15 fathom water. Annual. Summer. Not 
uncommon on the British and Irish shores, in many localities, from 
Orkney to Cornwall. Exceedingly abundant and of great size on the 
coast of Antrim; and in Roundstone Bay, Galway. 8. Torquay and 
Budleigh, Mrs. Griffiths. Penzance, Mr. Ralfs. Mount Edgecombe, 
fev. W. 8. Hore. Forres, Mr. brodie. Bantry Bay, Miss Hutchins. 
y. Kilkee, W. H. H. Roundstone Bay, Mr. M’e Calla. Mount 
Batten, Mr. Rohloff. 8. Orkney, Rev. J. H. Pollerfen. «. Round- 
stone Bay, Mr. M’ Calla. 
Grocer. Distr. Atlantic shores of Europe and North America. Mediterranean 
Sea. ‘Tasmania. 
Descr. Root, a small disc. Froxds growing in tufts, exceedingly variable in 
size and form, according to locality : commonly from four to twelve or even 
twenty inches in length, and as much in breadth; and occasionally measuring 
five feet in length, and three in breadth, variously divided. In some 
specimens the main frond is nearly simple, or but once forked, broadly 
obovate, or oblong, with the margin divided into numerous linear lobes, 
from half an inch to an inch in width, two or three inches long, once or 
twice forked, their ultimate lobes somewhat digitate. The margin of such 
specimens is so extended in proportion to the disc, as to form large undu- 
lations or folds, when the plant is floating in water; and when displayed 
on paper the parts lie over each other, rendering it difficult to display the 
form fully. The opposite to this form is found in our var. 8, in which the 
whole frond is divided to the base into linear, dichotomous lobes, with a 
perfectly flat margin. In y. the substance is thick, of a darker colour, 
brownish when dry ; the frond is from half an inch to an inch broad, six or 
eight inches long, dichotomous, with the margin minutely, but strongly 
curled : 6. is also thicker than the usual form, cuneate at base, variously 
lobed, the lobes flat, broadly obovate, with a rounded margin; and it often 
has the appearance of sprouting from an old frond: ¢. is much thinner, than 
the others, without fruit, roundish, the margin cut into minute forked lobes, 
not a line in breadth. There are many other states, which connect these 
several varieties together. Fructification thickly scattered over the whole 
surface ; tubercles as large as turnip-seed, hemispherical, containing a cluster 
of stalked, obovate spores. Spots of tetraspores large, a line or more in 
length, oblong, dark-red, containing numerous grains. Swdstance delicately 
membranaceous, closely adhering to paper, and glossy when dry. Colour, 
a fine rosy pink, generally well preserved in drying. 
Plate CCI. Fig. 1. NrropuyiiumM punctatuM; a small plant, of the normal 
form :—of the natural size. 2. A sorus. 3. A tetraspore from the same. 
4. Vertical section of a tubercle. 5. Tuft of spores from the same. 
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