Whorled Dropseed is a species of the south and southwestern United States (Terrell and Peterson, 2009). "Native of tropical America; West Indies, Colorado and Kansas to Texas and Louisiana; southern Florida; Missouri to southeastern New York" (Reed, 1964).
There are 4 records in the project database.
| GA | AL | WA | FR | CL | MO | HO | BA | BC | HA | CE | PG | AA | CV | CH | SM | KE | QA | CN | TA | DO | WI | SO | WO |