| Author | L. | |
| Distribution | Mountains, Piedmont, and adjacent northern Coastal Plain; sparingly east to Onslow County along the coast. This species is in the horticultural trade, so it is possible that some records are not truly natural.
MA to southern Ont. and WI, south to northern FL and TX. | |
| Abundance | Fairly common to uncommon in the southern Mountains. Uncommon in the Piedmont. Uncommon in the northwestern Coastal Plain. | |
| Habitat | Moist bottomlands and floodplain forests, riverside scour zones, mesophytic forests, wooded borders, powerline clearings, and other sites in mesic to moist soil; it favors circumneutral soil. |
| Phenology | Flowering and fruiting July - early September. | |
| Identification | Tall Tickseed is just that: 4-7 feet tall, and reportedly up to 9 feet. The paired leaves are numerous and resemble those of Greater Tickseed (each divided into 3 segments), but with obvious leafstalks. The heads have about 8 yellow rays, the disks brown. | |
| Taxonomic Comments | None
For excellent drawings of all species (except those recently described) and range maps (although now out-of-date), see the monograph by Smith (1976). | |
| Other Common Name(s) | Tall Coreopsis | |
| State Rank | S3? [S4] | |
| Global Rank | G5 | |
| State Status | | |
| US Status | | |
| USACE-agcp | FAC link |
| USACE-emp | FAC link |
