Polysiphonia paniculata Mont.

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02188012
THE NEW YORK BOTANICAL GARDEN
MARINE ALGAE OF PERU, COLLECTED BY ROBERT E. -COKER
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Polysipho¤ia paniculata Mont. Ann. Sci. Nat. Bot.
II. x8: 254. 1842; Voy. Bonite, Bot. Crypt. 91.
pi. 143. f. 2. 1846. K�tz. Tab. Phyc. 13:15.
pl- 45- f- c-e. 1863
Polysiphonia stricta? Mont. FI. Boliv. 18. 1839. Not P. stricta
(Dillw.) Grev.; Hook. Brit. FI. 21: 329. 1833.
Polysiphonia commutata Endl. Gen. PI. Suppl. 3: 45- 1843. Not
P. commutata K�tz. Phyc. Gen. 428. 1843.
polysiphonia Qrbigniana K�tz. Sp. Alg. 820. 1849.
On Gigartina Chauvinii offered for sale in the market of Lii¤a,
Jan. 14, 1907, Coker 26 p.p.', in lagoon at the mouth of the Rio
Rimac, region of Callao, February 4, 1907, Coker 51 p.p.?, dre4ged
on muddy bottom in Anc˘n Bay, February 13, 1907, Coker 90
p.p.; with Caulerpa flagelUformis ligulata and Polysiphonia s'p.,
Lobos de Afuera, Mar. 18, 1907, Coker 126 p.p.; in a lagoon at La
Puntilla, Bay of Paracas, June 29, 1907, Coker 09619 p.p.
This species appears to have been rarely met with since its
original collection on the shores of Peru by d?Orbigny and. by
Gaudichaud, but it has been^reported from Paita and from the
Island of San LorenzoJay Picc ne.* The 9-11 pericentral siphons
are often twisted or spirally disposed, as described by Mont gne.
'The ?Polysiphonia stricta?? of Montagne?s Florula Boliviensis
has been given new-Żnames by Endlicher and by K�tzing, appar-
ently on the strength of Montagne?s description without an
examination of his plant':' Montagne?s doubtful reference of the
plant to the 4-siphoned P. stricta, together with his description of
the ?articuli? as ?venis quatuor striati,? has naturally led sub-
sequent writers to suppose?that the plant belonged with the
oligosiphonous species. However, in Montagne?s original material
of his ?Polysiphonia stricta?? (Callao, d'Orbigny), which we haYe
been permitted to examine through the courtesy of M.- Hariot,
we find only a 9-io-siphon'ed plant, aside from the associated
4-siphoned Streblocladia camptoclada, and we think the ?venis
quatuor striati? of Montagne?s description was intended to apply
only to the superficial appearance of a segment as ordinarily
observed under the microscope. We cannot see that the plant
* Alg. Vettor Pisani 83. 1886.
Polysiphonia
143
differs from the Polysiphonia paniculata, described by Montagne
three years later from Peruvian material collected by Gaudichaud.
The species occurs also in Chile, where it was collected by
W. H. Harvey, according to a specimen placed with P. Orbigniana
in herb. Montagne.
SMITHSONIAN INSTITUTION
From THE UNITED STATES NATIONAL HERBARIUM
Polysiphonia paniculata Mont.
det. W, R, Taylor
Payta, Peru .
Hassler Expedition 100
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