Species: 

Conium maculatum

Common Name: 

Poison hemlock

Systems Affected (standardized): 

rangeland, riparian/aquatic, disturbed/waste areas, cropland/pastureland, forest/woodland

Regions(s) present (updated by AB): 

PH, NE, NW, SW

5563325-PPT.jpg
Impacts: 

In natural areas it can displace native plant species and prefers riparian habitats. contains highly poisonous alkaloids toxic to mammals. Human deaths have occurred from harvesting and consuming the roots as wild carrots or parsnips.
Modification of successional patterns
Negatively impacts agriculture
Negatively impacts human health
Negatively impacts animal health
Threat to/ loss of native species

Source? likely to be reintroduced: 

The risk of introduction is relatively low. The seed is conspicuous and, although possible, it is unlikely to be an undetected contaminant of any crop seed. Deliberate introduction as a garden plant or herbal medicine has occurred in the past but is less likely today.

Info Blurb: 

Can displace native plant species. Contains highly poisonous alkaloids toxic to mammals.
The risk of introduction is relatively low. Deliberate introduction as a garden plant or for herbal medicine has occurred in the past.

Native Regions in OK: 

NONE

Current and past designations: 

NM, OKPS

Present in OK?

Yes

Present in Bordering States?

TX, NM, CO, KS, MO, LA

Has Legal Status in BS?

CO List C, NM Class B