Wolffia borealis (Engelm. ex Hegelm.) Landolt

• Region

  North America

• Country

  United States of America

• State/Province

  Washington

• County/Municipio

  San Juan Co.

• Locality

  S end of pond, NE side of Mitchell Bay Road, 2.3 air km WNW of Cady Mountain, San Juan Island

• Elevation

  Alt. 50 m. (164 ft.)

• Coordinates

  48.5617, -123.151

• Distribution

  Map all specimens of this taxon

US
SAN JUAN COUNTY, WASHINGTON
Wolffia borealis (Engelm.) Landolt &
Wildi ex Gandhi, Wiersema & Brouillet
Araceae
Upper surface flat, dark green, ends
pointed and slightly turned up, lower
surface greenish-translucent and bulging;
common floating aquatic in shallow water,
shade of Alnus rubra, with Lemna
turionifera, Spirodela polyrrhiza,
Ricciocarpus natans, Wolffia columbiana,
S end of pond, NE side of Mitchell Bay
Road, 2.3 air km WNW of Cady
Mountain, San Juan Island, elev. 50 m,
48.5617° N, 123.1515° W
22 July 2016 Coll. Peter F. Zika 28161
03097713