size and with a broader and more ovate frond. I rather think
that this ignorance of the fruit arises from imperfect observation.
The plant does not seem to be found all round the coast, and
where it has been observed has been in places only occasionally
and hastily visited by botanists; and though I have myself
gathered it in my immediate neighbourhood, I must plead guilty
to having neglected to watch its growth from the commencement
to disappearance. Capt. Carmichael, a very close observer, was
persuaded of its distinct character; and I have specimens from
North America and the Baltic closely resembling those from om’
own shores.
According to the younger Agardh the synonyme Zonaria
tenuissima, Ag., quoted by Greville belongs rather to Laminaria
fascia; for which reason the Swedish Algologist has substituted
tlie name undulata for that here adopted.
Fig. 1, PU N C TA III.4 T E N U IS S IM A ; growing Oil „ .
2. Small portion of tlie membrane magnified.
;— natural size.
