Vaucheria tuberosa A.Braun ex Kütz.

• Region

  North America

• Country

  United States of America

• State/Province

  Texas

• Locality

  near San Marcos, forming dark green tufts attached to logs and debris in San Marcos River

• Coordinates

  29.8737, -97.9312

• Coordinate Uncertainty (m)

  3651.57

• Georeferencing Method

  BioGeomancer, Guide to Best Practices for Georefer. Multiple dams. Found coordinates of midpoint of shore of San Marcos River in San Marcos by Measured betw. start + end, halving dist., finding coord. near midpt. Meas. from coord. - farthest extent x2 = linear ext. (3640 m). Used MaNIS Georef. Calc. to find uncert.

• Geodetic Datum

  WGS84

• Distribution

  Map all specimens of this taxon

Phycothaca Boreali-Americana. Collins, Holden, and Setchell.
764. Vaucheria tuberosa a. Br.
A. Braua in Kuetziug', Tab. Phyc. Vol. VI, p. 23, PI. LXV, 1856.
Wolle, F. W. Algae of the U. S., p. 154, PI. CXXX, 1887.
De Toni, Syll. Alg., Vol. I, p. 406,1889.
Forming dark green tufts attached to logs and debris in San
Marcos River, near San Marcos, Texas, Dec., 1896.
De A. SAUNDERS.
This anomalous plant has regular dichotomous branching with the
constrictions at the forkings tinged with red, and the irregular lateral
branches (stolons) repeatedly constricted. The tuber-like swellings
at the apices are spherical, one-eighth to one-quarter mm. diam., the
vegetative filaments average one-tenth mm. diam.
De A. S.
02348576