Polysiphonia subtilissima Mont.

CHRYSLER HERBARIUM - RUTGERS UNIVERSITY
THE STATE UNIVERSITY OF NEW JERSEY
Algae of Massachusetts
Polysiphonia subtilissima Montague.
Lagoon Cove--dpedged.
Martha’s Vineyard, Dukes Co.
H. Croasdale
E.T. Moul	6377.	7/19/' 1-9
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BY M. L. BRITTON, 1922
?JEW YOHK
BOTANICAL,
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J.CAL
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NEW YORK BOTANICAL GARDEN
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Phykotheka universalis. .
553. Polysiphonia subtilissima Mont.
Montague in Ann. des 50. liat. 2. ser. vol. XIII p. 199. — Ktitz. Spec. alg. p. 804.
— Harvey Nereis Boreal. Amer. P. II p. 34.
In a creek in salt marshes. Revere Massachusetts U. S. A. Sept. 13 1892.
Frank S. Collins.
45. Polysiphonia subtilissima Mont.
Farlow, N. E. Marine Algse, p. 170, 1881.
Growing on stoues, on Euppia maritima, and on muddy bottom in
a creek in Revere Marshes, near Linden Station, Mass., Sept. 13,
1892.
F. S. COLLINS.
The prostrate filaments are well developed when the plant grows on mud,
less so when on stones or Euppia. It has bppn abundant at this station for
V	several yenrs, from July to November, but no fruit of any kind has yet been
found. Though slender and apparently delicate, it endures without injury ex-
posure at low tide for several hours to the full heat of the sun, becoming quite
dry and brittle; also exposure to h«avy rain for the same length of time; in
both cases resuming its normal condition with the return of the tide.
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