Houstonia longifolia (Longleaf Summer Bluet) is a species of perennial herb in the family Rubiaceae. They have a self-supporting growth form. They are native to Canada, The Contiguous United States, and Eastern North America. They have simple, broad leaves. Flowers are visited by Olympia Marble. Individuals can grow to 0.11 m.
EOL has data for 18 attributes, including: