Agarum turneri Postels & Rupr.

• Region

  North America

• Country

  United States of America

• State/Province

  Maine

• County/Municipio

  Hancock Co.

• Locality

  Mt. Desert Island, Sea Wall, growing in tide pools

• Coordinates

  44.2529, -68.2952

• Coordinate Uncertainty (m)

  1116.57

• Georeferencing Method

  Georeferencing Quick Reference Guide, Version 2012. Located coordinates of approx. geogr. center of Seawall. Measured from coord. to approx. geogr. center of nearest named place, Manset; 1/2ed dist. = linearext. (1105 m). Input info into MaNIS Georef. Calc. to find uncert. radius (Undefined Area).

• Geodetic Datum

  WGS84

• Distribution

  Map all specimens of this taxon

Phycotheca Boreali-Americana. Collins, Holden, and Setchell.

III. Agarum Turneri Post. & RUpr.

Postels & Ruprecht, 111. Alg., p. 12, PI. XXII, 1840.

Harvey, Nereis Bor.-Am., part 1, p. 95, PI. V, 1852.

Farl. And. & Eaton, Alg. Am.-Bor. Exsicc., No. 113,1879.

Farlow, N. E. Marine Algae, p. 96,1881.

De Toni, Syll. Alg., Vol. Ill, p. 334,1895.

Humphrey, Proc. Amer. Acad., Vol. XXIII, p. 195, PI. I & II, 1896.

a.	Washed ashore, Revere Beach, Massachusetts.

b.	Growing in tide pools, Sea Wall, Mount Desert Island, Maine,
uly, 1897.

c.	Portion of frond with unilocular sporangia.

The tide pool form, apparently from being limited in its longitudinal
growth by the shallowness of the water, is relatively broader than the nor-
mal deep water form, has a shorter stipe, and is often much folded and
contorted. The plate in the Nereis represents the typical deep water form.
The contrast of the tide pool form is sometimes striking, but being due
wholly to local conditions, the latter does not seem to deserve a special
a me.

F. S. COLLINS.

F. S. C.

NEW YORK BOTANICAL GARDEN

02223949

02223949