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Osmorhiza longistylis (Longstyle sweetroot)
Smith, R.W.

Osmorhiza longistylis

Osmorhiza longistylis (Torr.) DC.

Longstyle Sweetroot, Aniseroot, Sweet-cicely, Wild Licorice

Apiaceae (Carrot Family)

Synonym(s): Osmorhiza aristata var. longistylis, Osmorhiza longistylis var. brachycoma, Osmorhiza longistylis var. imbarbata, Osmorhiza longistylis var. villicaulis, Washingtonia longistylis

USDA Symbol: oslo

USDA Native Status: L48 (N), CAN (N)

The 1-3 ft. stems are usually solitary and covered with long, soft hairs. Leaves are divided into threes, two or three times. Open clusters (compound umbel) of small, white flowers rise above the foliage on stalks from upper leaf axils.


From the Image Gallery

2 photo(s) available in the Image Gallery

Plant Characteristics

Duration: Perennial
Habit: Herb
Fruit Type: Schizocarp
Size Notes: Up to about 3 feet tall.

Bloom Information

Bloom Color: White
Bloom Time: Apr , May , Jun


USA: AL , AR , CO , CT , DC , DE , GA , IA , IL , IN , KS , KY , MA , MD , ME , MI , MN , MO , MS , MT , NC , ND , NE , NH , NJ , NM , NY , OH , OK , PA , RI , SC , SD , TN , TX , VA , VT , WI , WV , WY
Canada: AB , MB , NB , NS , ON , PE , QC , SK
Native Distribution: Que., s. to GA, TX & CO (more abundant southward)
Native Habitat: Rich, alluvial woods; wooded slopes.

Growing Conditions

Light Requirement: Shade
Soil Moisture: Moist
Soil Description: Moist, rich soils.


Description: Sweet cicely is not easy, but not impossible, to start from seeds.
Commercially Avail: yes

Find Seed or Plants

View propagation protocol from Native Plants Network.

National Wetland Indicator Status

This information is derived from the U.S. Army Corps of Engineers National Wetland Plant List, Version 3.1 (Lichvar, R.W. 2013. The National Wetland Plant List: 2013 wetland ratings. Phytoneuron 2013-49: 1-241). Click here for map of regions.

Additional resources

USDA: Find Osmorhiza longistylis in USDA Plants
FNA: Find Osmorhiza longistylis in the Flora of North America (if available)
Google: Search Google for Osmorhiza longistylis


Record Modified: 2012-05-02
Research By: TWC Staff

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