• Region

  North America

• Country

  United States of America

• State/Province

  Utah

• Locality

  Great Salt Lake. Garfield Beach, one mile northeast from Black rock

• Coordinates

  40.7105, -112.261

• Coordinate Uncertainty (m)

  1171.39

• Georeferencing Method

  Georeferencing Quick Reference Guide, Version 2012. Located coordinates of approx. geogr. center of Garfield Beach (based on an article). Measured from coord. to approx. geogr. center of nearest named place, Lake Point; 1/2ed dist. (1160 m). Input info into MaNIS Georef. Calc. to find uncert. radius (Undef. Area).

• Geodetic Datum

  WGS84

• Distribution

  Map all specimens of this taxon

NEW YORK BOTANICAL GARDEN

	
009454-	CM

Josephine E. Tilden. American Algae.

288. Dichothrix utahensis n. sp.

Stratum impregnated with lime, light aeruginous, .5-1 cm. in thickness;
filaments 22-30 mic. in diameter, generally thickened at base; pseudo-
branches appressed, included below in the common sheath; sheath
thick, lamellose, colorless or somewhat dark (with a greenish tinge
after being in dilute hydrochloric acid); trichomes olive green. 7.5-12.5
mic. in diameter, sometimes moniliform, attenuate into a long hair;
articulations in lower portions equal to diameter in length, shorter
than diameter in upper parts; heterocysts basal and intercalary, tne
former 1-3 in number.

Fprming a calcareous crust on an old board and on stones in small
stream running from brackish pond into Great Salt Lake.

One mile northeast from Black rock, Garfield beach, Great Salt Lake, Utah.

J. E. T. 8 J1 1897.

The above species resembles D. gypsophila and D. calcarea in its habit of
forming a calcareous crust, and in some minor characters; like Calo-
thrix scopularum it has the basal portion of the filament thickened and
often shows two or three basal heterocvsts.

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Josephine E. Tilden. American Algae.

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288. Dichothrix utahensis n. sp.

Stratum impregnated with lime, light aeruginous, .5-1 cm. in thickness;
filaments 22-30 mic. in diameter, generally thickened at base; pseudo-
branches appressed, included below in the common sheath; sheath
thick, lamellose, colorless or somewhat dark (with a greenish tinge
after being in dilute hydrochloric acid); trichomes olive green. 7.5-12.5
mic. in diameter, sometimes moniliform, attenuate into a long hair;
articulations in lower portions equal to diameter in length, shorter
than diameter in upper parts; heterocysts basal and intercalary, tne
former 1-3 in number.

Forming a calcareous crust on an old board and on stones in small
stream running from brackish pond into Great Salt Lake.

One mile northeast from Black rock, Garfield beach, Great Salt Lake, Utah.

J. E. T. 8 J1 1897.

The above species resembles D. gypsophila and D. calcarea in its habit of
forming a calcareous crust, and in some minor characters; like Calo-
thrix scopularum it has the basal portion of the filament thickened and
often shows two or three basal heterocvsts.

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