New York Natural Heritage Program
Delmarva Beggar-ticks
Bidens bidentoides (Nutt.) Britt.
Dicots
Freshwater intertidal shore Timothy G. Howard
Family: Aster Family (Asteraceae)

State Protection: Rare
listed species have: 1) 20 to 35 extant sites, or 2) 3,000 to 5,000 individuals statewide.

Federal Protection: Not Listed

State Rarity Rank: S3
A State Rarity Rank of S3 means: This plant is rare in New York (typically 21-50 populations, limited number of individuals, or limited range).

Global Rarity Rank: G3G4
A Global Rarity Rank of G3G4 means: Vulnerable globally, or Apparently Secure -- At moderate risk of extinction, with relatively few populations or locations in the world, few individuals, and/or restricted range; or uncommon but not rare globally; may be rare in some parts of its range; possibly some cause for long-term concern due to declines or other factors. More information is needed to assign a single conservation status.


Did you know?
This species was originally placed in the genus Coreopsis and given the species name bidentoides because it resembled plants in the genus Bidens. Estuary beggar-ticks is being discovered with more frequency along the Hudson River. Some populations contain thousands of plants spread along the shoreline of the river.

State Ranking Justification [-]
There are 26 existing populations and a few more populations may be discovered with more survey of Hudson River shoreline. Most historical records have been relocated but a few remain undiscovered.

Short-term Trends [-]

Long-term Trends [-]