Coefficient of Conservatism:
Coefficient of Wetness:
A. A. Reznicek
Dry sandy or gravelly places, including prairies, oak savanna, roadsides, and fields; very recently becoming abundant along major highways.
A distinctive slender plant, the leaves numerous and nearly filiform (often revolute) and the flowers white to greenish (sometimes purple tinged) in umbels near the top of the plant. This is now a characteristic species along dry, sunny roadsides in many areas. Most northern records are relatively recent, the plant evidently moving northwards.