Griffithsia chilensis Mont. ex Kütz.

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THE NEW YORK BOTANICAL GARDEN
MARINE ALGAE OF PERU, COLLECTED feY ROBERT E. COKER
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Griffithsia chilensis Mont.; Kiitz. Sp. Alg. 660. 1849s
Tab. Phyc. 12: 7. pi. 21. f. d-f.
1862
In the surf, Lobos de Tierra, April 2, 1907, Coker 151 p.p.
The specimen is apparently sterile, as was also the type of
Griffithsia chilensis. The plants are shorter, more cespitose, and
less straggling than the originals of Montagne and of Kiitzing-,
The filaments are mostly 250-350 n in diameter, but are often
500 n or more under the dichotomies; the apices are 160-250 ­i
in diameter. Under no. 149 p.p., same locality and date, is a
mere fragment, probably of the same species, but commonly
more swollen at the septa, at or near which the plant is often
rhiziniferous. These rhizoids are sometimes' enlarged and haj^
terous at apex and the filaments are thereby more or less coherent.
The filaments of this no. 149 attain a diameter of 600-700 n at the
septa and occasionally 1 mm. under the di- or tri-'chotomies.
Griffithsia chilensis has been attributed by Montagne (Syfl.
Crypt. 447. 1856) to Peru as well as to Chile. Whether it is the
same as the plant from Cobija (then in Peru, now in Chile) that
he had previously (FI. Boliv. 7. 1839) referred to SG. setacea, we
do not know. Kiitzing, at the place of original publication of
G, chilensis, gave it a position immediately following G. setacea.
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