Spongomorpha arcta (Dillwyn) Kütz.

• Region

  North America

• Country

  United States of America

• State/Province

  Washington

• County/Municipio

  San Juan Co.

• Locality

  San Juan Island, Minnesota reef, two miles south of Friday Harbor, in tufts attached to rocks, exposed at lowest tide

• Coordinates

  48.5279, -122.973

• Coordinate Uncertainty (m)

  122.569

• Georeferencing Method

  Georeferencing Quick Reference Guide, Version 2012. Located coordinates of geogr. center of channel of Minnesota Reef. Measured from coord. to farthest extent of the channel to find linear extent (111 m). Input info. into MaNIS Georef. Calc. to find uncert. rad. (Bounded Area).

• Geodetic Datum

  WGS84

• Distribution

  Map all specimens of this taxon

Josephine E. Tilden. American Algae.
279. Cladophora arcta (Dellw.) Kg. Phyc. germ. 263. 1845.
Caespitose hemispherical or subglobose, 3-8 cm. high, somewhat rigid;
filaments radiately disposed, 40-100 mic. in thickness; articulations of
variable length, older 1-2 times, younger 8-12 times the diameter in
in length.
Exposed at lowest tide. In tufts attached to rocks.
Minnesota reef, two miles south bf Friday Harbor, San Juan island, Wash-
J. E. T. 1 Je 1898.
ington
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COLUMBIA
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COLUMBIA j
ViftV/VEBSrT'{¿y	Josephine E. Tilden. American Algae.
379. Cladophora arcta (Dillw.) Kg. Phyc. germ. 263. 1845.
Caespitose hemispherical or subglobose, 3-8 cm. high, somewhat rigid;
filaments radiately disposed, 40-100 mic. in thickness; articulations of
variable length, older 1-2 times, younger 8-12 times the diameter in
in length.
Exposed at lowest tide. In tufts attached to rocks.
Minnesota reef, two miles south of Friday Harbor, San Juan island, Wash-
ington.
J. E. T. 1 Je 1898.
02134749