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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  Asclepias lanuginosa Nutt. image
Photographer: James R. Sime           

James R. Sime
Family Asclepiadaceae
Asclepias lanuginosa Nutt.
side-cluster milkweed, woolly milkweed
Asclepias: named for the Greek god of healing Asklepios
lanuginosa: woolly or downy
Hazardous hazard symbol- click for definition
County distribution map- click for detailed distribution maps.
Detailed Distribution:
Town Range Maps
Google Dot Maps
Status: Threatened
Plant: weakly erect perennial, 6"-12" tall forb, milky juice, single stem with long, soft hairs
Flower: greenish to yellow, 5-parted, 1/4"-1/3" long, stalked, no horns, petals and hoods touching; inflorescence a drooping, solitary, terminal umbel; blooms June-July
Fruit:pods with many seeds on silky hairs
Leaf:oblong to lance-like, blunt, alternate, hairy on both sides
Habitat: dry; woods, prairies; in rocky soil

More Information Natural Communities Herbarium Specimens
All Asclepias list Google- Images or Text
Acerates lanuginosa (Nutt.) Decne.
Acerates monocephala Lapham ex A.Gray
Asclepias nuttalliana Torr.
Asclepias otarioides auct. non E.Fourn.

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