113 
The Chairman said that the Society was much indebted to 
Mr. Sanders for the very interesting statement he had given—interest- 
ing, because Mr. Sanders had brought forward an investigation which 
had hitherto escaped the notice of the scientific. He would be 
happy to hear any remarks on Mr. Sanders’ views. 
Mr. Andrews said, that it would be difficult to comment on the ex- 
cellent statement made by Mr. Sanders, unless the same opportunities 
of investigation had been afforded that Mr. Sanders so perseveringly 
followed out. The highest credit was due to Mr. Sanders in sub- 
mitting views which had not been noticed by any authority in Algo- 
logy. Statements so put forward had frequently influenced fuller 
inquiries, which often resulted in the formation of new alliances or 
genera. In a notice of the discovery of Stenogramme interrupta in 
Cork harbour by Mr. Isaac Carroll, Dr. Harvey, in this Society, gave 
a review of the several discoveries and wide distribution of that plant. 
This genus was established by Dr. Harvey; Agardh, who had con- 
stituted it a Delesseria, having mistaken the linear conceptacle for a 
nerve. Many of our most commonly distributed lichens and mosses 
are considered rarities when found in fruit, and several species of the 
most frequent occurrence have never been known to fruit in the 
British Isles. Desmarestia ligulata is a plant of common occurrence. 
On the west coast it may be found in the tide-pools of low-water-mark, 
and to the greatest depth that Algz can exist. Mr. Andrews trusts 
that Mr. Sanders may successfully establish the investigations which 
he has so ably commenced. 
Scolopendrium vulgare, var. marginatum. 
Dr. Kinahan exhibited a plant of Scolopendrium vulgare, var. mar- 
ginatum, found by him at Tinnehinch, county Wicklow, March 2, 
1854, its first record as Irish. This variety (first discovered in 
England by Sir W. C. Trevelyan) is remarkable for having the epider- 
mis on the back of the frond raised into a membranous ridge or tuck, 
running in a wavy line along it, at some little distance from the edge 
of the frond; the fronds are scalloped and serrated along their edges, 
the sori either continuous over the ridge to the edge of the frond or 
stopping at it, when we find a second set of sori arising outside the 
hem; or thirdly, the sori are only produced external to the hem: the 
form is further remarkable for having several modifications—first, that 
under consideration; secondly, a form named bimarginatum, in 
VOL. V. Q 
