Sargassum fonanonense Setch. & N.L.Gardner

Sargassum fonanonense Setchell et Gardner, sp. nov. Fig. 33, 1, 2.

Frondibus 1.5-2.5 dm. altis, per radices solidas, parenchymaticas, discoideas
affixis, monoicis; stipitibus 0.5-1.0 cm. longis, teretibus, levibus, ramos quoquever-
Riim emittentibus; ramis ramulis secundariis numerosis, curtis, subdistichis, fructif-
eris indutis; rhachidibus ramorum primariorum leviter complanatis, iis ramulorum
secundariorum teretis; foliis anguste ellipticis, coriaceis, 1.5-2.5 cm. longis, costis
medialibus inconspicuis, apice fere evanescentibus, marginibus seriebus rigidis
dentium triangularum duabus ad laminas perpendiculariter positis ornatis,
cryptostomatibus promiscue dispersis, conspicuis; vesiculis ignotis; receptaculis e
axillis rhachidibus proxime positis, in basibus foliorum recurvatorum affixis, profuse
ramosis, plus minusve tuberculatis et dentibus curtis obtusisque dense ornatis,
capitula densa sphaerica formantibus.

Samoan name: Limu Tala (improperly Limu Kala).

No. 1290, in small pools, filled by spray and well above high-water mark, “iron-
bound coast” at Fonanono, beyond Tafuna (July 21, 1920).

This species, with the double row of teeth on the margin, seems close to several
species with similar leaves, but in details it is quite different. Siitupe says that it
is eaten.

No. 1290 belongs to the Fruticulosae and seems to belong nearest to S. tele-
phifolium (Turn.) J. Ag. and to S. densifolium Zan., but differs from both in leaf
and inflorescence.

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Fig. 33. Sargassum fonanonense Setchell et Gardner sp. nov. (No. 1290). Powell del
1. Upper portion of branch. X 1.33 + 2. Inflorescence. X 2.

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ISOTYPE OF:

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Plants of Tutuila Island, Samoa

Collected by W. A. Setchell, under the auspices of the Division of
Marine Biology of the Carnegie Institution of Washington, D.C., Alfred
G. Mayor, Director, June and July, 1920.

Sargassum fonanonensB* ietchell et
Gardner sp. nov.
In small pools, filled by spray and.
well above high water mark,11iron
bound coast:l at "?onanono .beyond

T

at una

July 21,1920
“Limu Tala'*

No.

1290

NEW YORK BOTANICAL GARDEN

00922449

00922449