[have thought it right to restore the specific name under 
which this fine species has been described by Dr. Greville, in 
preference to that of w/vordeum, which I adopted in the Manual, 
in deference to the authority of Sir W. Hooker, who, im the 
British Flora, regards Mitophyllum Hillie as identical with Fucus 
ulvoides of Turner. By a reference to the Historia Fucorum it 
will be seen that Mwcus ulvoides was founded on specimens com- 
municated by Miss Hutchins, whose locality is alone mentioned 
for the species; although im the remarks appended to the 
description, Mr. Turner speaks of other specimens, received from 
Miss Hill, which he was disposed to consider the same, and 
which were, no doubt, our Hi//ie. These are the specimens 
which Sir W. Hooker mentions in the British Flora, as existing 
in his Herbarium. But these specimens, on which Mr. Turner’s 
mind was not fully decided, (otherwise he would have quoted 
Miss Hill’s habitat in its proper place,) cannot be regarded as 
the wlvoides of that author, unless they can be shown to be iden- 
tical with those collected by Miss Hutchin’s, from which the 
figure and description were taken. In the absence of direct 
evidence, which an inspection of Mr. Turner’s Herbarium could 
alone supply, I am forced to judge of Miss Hutchins’s wlvoides 
by the figure and description ; and these, I have no hesitation in 
saying, agree in all respects with ¢ubercle-fruited individuals of 
N. punctatum, and are not characteristic of our WV. Hillia. 
I think it is, therefore, clear that the Fucus ulvoides of Turner 
must be considered a synonym of JV. punctatum; and if this 
be admitted, all will agree, and none more readily than Sir W. 
Hooker, that in dedicating the present species to the memory of 
Miss Hill, its discoverer, and one of the most acute and suc- 
cessful marine botanists of her day, Dr. Greville has but paid a 
well-earned tribute to departed worth. 
Fig. 1. A frond of Niropuynium HiLiim, producing ¢etraspores. 2. Portion 
of a frond with ¢udbercles:—both of the natural size. 3. Portion of the 
surface, with a sorus. 4. Tetraspores. 5. Portion of the surface with a 
tubercle. 6. Vertical section of the same :—al/ more or less highly magnified. 
