A biological study of Durvillaea antarctica (Chamisso) Hariot and D ...

45
and states, "SaY'cophYCU8 simple:!; Kg n.sp.;
Falklands-Inseln, Roenack.
Meeralgeo, No.519".
The spec:i.men cons±sts of a piece of blade approximately 2S elfl
long and 11 em wide at its widest part. It appears to be the lob~
of a large blade. The surface is worn and there is no sign of
any honeycomb tissue. It was collected by Hoenacker, who cut up the
plant, and
fragments as fasicle No. 519 in his "Algae
Mar ineae Sicc:atae" (1862) .
.:£xJ2£_..1ocali ty: "Ins 0 Maclorian
,. [Falkland Is 1 .
Kuetzing claimed that tllis was a distinct species although its
anatomy resembled D. potatorum. He stated that it diffeyed f:COIO
the FUCU8 potatorum specimen illusJcrated in Turner (1819: 242)
because its lamina was tv,lice as thick, much harder (when dry} I and
less extensively divided. Its stipe, he claimed, was not as small
or slightly flattened as the F. potatorwn stipe. Naylor (pers.
comm.l who has seen the frond fragment that Hoenacker sent to Kue·tzing,
describes it as a small isosceles triangle \\l"ith sides L5 em.
Hariot (1889:54) pointed out that positive identification from such
a small piece of blade was practically impossible.
(11) Durvillea ,willana Lindauer, Pacific Science 3:348,
Fig. 6 (1949).
Diagnosis: "Frondibus 5 m. vel ultY'a longis 5
fU8c-DB.,
cOY'iaceisj disco scutato; stipite crasso~
cylindrico~
cY'escen te
1 m. lOng03 planius et la"tius
latcrm comp lana tom laJm:na:rn in segmen ta
loris simi Zia plUB minusve aUe divisCfJlI; sUpite
ferente 'n1Ultas pY'oliferationes irregulaY'i"ter
positas in omnibus longitz