This is yet another species which was imported from Europe for cultivation, but escaped to become an invasive and noxious…
This species was discovered by Mary Lynne Paulson at Horn Rapids on the Yakima River in 1971, and described by…
These dragonflies are members of the family Gomphidae (clubtails), so called because the end of the abdomen widens into a…
This is a large, bushy shrub which grows in muddy and sandy flats along the Snake and Columbia Rivers, often…
Though this is a European species which has escaped cultivation and has become widely naturalized and even invasive in our…
This introduced member of the family Polygonaceae (buckwheats) is a denizen of wetlands and vernally wet areas, and can be…
This is a wildly invasive European native which had become established in North America by the 1830s, both as a…
Japanese Mazus is a pretty little plant which seldom gets more than 8” tall. One look at the flowers and…
These are members of the family Tettigoniidae (katydids), a family which is superficially similar to grasshoppers but have much longer…
This is a tall (up to 5’), annual plant, with a stout, spotted, non-woody stem. The leaves are large, triangular,…