Family = Haloragaceae,
Displaying matches 1 - 9 of 9.
(= Myriophyllum brasiliense in Flora of the Pacific Northwest)
Perennial, aquatic herbs, the stems sturdy, 2-4 mm. thick and 1-9 dm. long, completely submerged until time of flowering.
Distribution: Occurring on both sides of the Cascades crest in Washington; widely distributed throughout much of North America.
Habitat: Ponds and slow-moving streams.
(taxon is not treated in Flora of the Pacific Northwest)
Distribution: Known only from Puget Sound lowlands in Washington; British Columbia south to California; widely distributed east of the Mississippi River in Canada and the U.S where apparently it is native.
Habitat: Lakes and ponds.
(= Myriophyllum hippuroides in Flora of the Pacific Northwest)
Perennial, aquatic herbs, the stems freely branched, 1-6 dm. long.
Distribution: Occurring chiefly west of the Cascades crest in Washington; British Columbia south to California; also in Illinois.
Habitat: Ponds and slow-moving streams.
(= Myriophyllum elatinoides in Flora of the Pacific Northwest)
Perennial, aquatic herbs, the stems simple or branched, 2-10 dm. long.
Distribution: Occurring in scattered locations in Washington; British Columbia south to California, east across Canada to New Brunswick, east in the U.S. to Idaho, Wyoming, and Utah; occurring in Mexico and South America.
Habitat: Ponds and slow-moving streams.
(= Myriophyllum spicatum var. exalbescens in Flora of the Pacific Northwest)
Perennial, aquatic herbs, the stems simple or branched.
Distribution: Widespread in North America; British Columbia south the California, east to the Atlantic Coast.
Habitat: Ponds and quiet streams, often in brackish water.
(= Myriophyllum spicatum var. spicatum in Flora of the Pacific Northwest)
Perennial, aquatic herbs, the stems simple or branched.
Distribution: Widely distributed throughout Washington; widely distributed throughout North America.
Habitat: Ponds, lakes, and quiet streams.
(taxon is not treated in Flora of the Pacific Northwest)
Distribution: Known in Washington only from Skamania County;
Habitat: Freshwater intertidal zone on mudflats. British Columbia south to Oregon; circumboreal.
Distribution: Distributed on both sides of the Cascades in Washington;
Habitat: Aquatic habitats below the water surface.
