Epilobium tetragonum (Square Stemmed Willowherb) is a species of perennial herb in the family Onagraceae. They have a self-supporting growth form. They are native to Borneo. They have simple, broad leaves. Flowers are visited by White-tailed bumblebee, Nettle Ground Bug, Brown-banded carder bee, and Melanostoma mellina. Individuals can grow to 0.48 m.
EOL has data for 22 attributes, including: