Heteranthera dubia (Jacq.) MacMill.

us
w
03887207
BENTON COUNTY, WASHINGTON
Heteranthera dubia (Jacq.) MacMill.
Pontederiaceae
Common aquatic, with submerged foliage
and bright yellow 6-petaled flowers on the
surface; shallow warm water, full sun,
over basalt cobbles, with Schoenoplectus
tabernaemontani, Myriophyllum spicatum,
Elodea nuttallii, Potamogeton gramineus,
near causeway to Crow Butte Island,
backwater of Lake Umatilla reservoir on
N bank of Columbia River, elev. 80 m,
45.8667° N, 119.8280° W, WGS84 GPS;
US AC Columbia River Plant Survey
18 Aug 2017 Coll. Peter F. Zika 29008
03887207