Robert W. Freckmann Herbarium


Because of technology changes and personnel changes at UWSP and the Wisconsin State Herbarium, the database of plant species housed at this site was merged with the database from the OLD WisFlora website to create a new Flora of Wisconsin website at Currently we are encouraging all Wisplant viewers to begin using the Flora of Wisconsin website as soon as possible. Wisplants will remain operational through July 13th. After that date, all traffic to Wisplants will be redirected to the Flora of Wisconsin website.

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Thank you.

  Sium suave Walter image
Photographer: Steve C. Garske           

Caroline A. Creevey

Emmet J. Judziewicz

Merel R. Black

Merel R. Black

Robert Bierman

Robert W. Freckmann

Robert W. Freckmann

Steve C. Garske

Steve C. Garske
Family Apiaceae
Sium suave Walter
hemlock water-parsnip, water-parsnip
Sium: from sion, a Greek name of some marsh plant
suave: fragrant
County distribution map- click for detailed distribution maps.
Detailed Distribution:
Town Range Maps
Google Dot Maps
Status: Native
Plant: erect, (annual?)/perennial, 2'-6' tall, smooth forb; stems solitary, branching, angular, stout; roots fibrous
Flower: white, 5-parted, the outer petals sometimes slightly larger; inflorescence a 1 1/2"-4 1/2" compound umbel with 6 or more compact umbellets; blooms July-Aug.
Fruit:oval, dry, obviously ribbed, splitting into 2 seeds- fruit:fruit drawing seed:seed drawing
Leaf:once pinnately-divided into 7-17 long, narrow, sharply-toothed leaflets
Habitat: sun; wet; shallows, shores; in water or muck

More Information Natural Communities Herbarium Specimens
All Sium list Ethnobotany Information Google- Images or Text
Sium cicutaefolium Schrank
Sium floridanum Small
Sium suave Walter var. floridanum (Small) C.F.Reed

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