Dig deeper at SERNEC, a consortium of southeastern herbaria.

This species of midwestern prairies and barrens closely resembles A. longifolia. The two taxa have sometimes been treated as distinct only at the rank of subspecies or as "very distinct varieties". Read more at Weakley's Flora (2022)

See diagrams of milkweed flower structure at Wayne's Word.

SYNONYMOUS WITH PLANTS NATIONAL DATABASE:
Asclepias hirtella   FAMILY Asclepiadaceae

SYNONYMOUS WITH Taxonomy of Asclepias hirtella & A. longifolia (Apocynaceae) (Turner, 2009)

Asclepias longifolia var. hirtella

SYNONYMOUS WITH A new combination in Asclepias. Phytologia (Farmer & Bell, 1985)

Asclepias longifolia ssp. hirtella

SYNONYMOUS WITH Manual of the Southeastern Flora (Small, 1933, 1938)

Acerates hirtella

COMMON NAME:
Barrens Milkweed, Green Milkweed, Prairie Milkweed

         To see larger pictures, click or hover over the thumbnails.

Richard and Teresa Ware    rtw_asclepias_hirtella_2

June        

Leaves numerous, linear, rough, 4-6" long, per Wildflowers of Tennessee (Carman, 2005).

Richard and Teresa Ware    rtw_asclepias_hirtella_2b

June        

Individual flowers on hairy stalks and without horns, per Wildflowers of Tennessee (Carman, 2005).

Richard and Teresa Ware    rtw_asclepias_hirtella2

August        

Nearly spherical umbels arise from the leaf axils, per Wildflowers of Tennessee, the Ohio Valley, and the Southern Appalachians (Horn, Cathcart, Hemmerly, & Duhl, 2005).

WEAKLEY'S FLORA OF THE SOUTHEASTERN US (4/24/22):
Asclepias hirtella   FAMILY Apocynaceae

SYNONYMOUS WITH PLANTS NATIONAL DATABASE:
Asclepias hirtella   FAMILY Asclepiadaceae

SYNONYMOUS WITH Taxonomy of Asclepias hirtella & A. longifolia (Apocynaceae) (Turner, 2009)
Asclepias longifolia var. hirtella

SYNONYMOUS WITH A new combination in Asclepias. Phytologia (Farmer & Bell, 1985)
Asclepias longifolia ssp. hirtella

SYNONYMOUS WITH Manual of the Southeastern Flora (Small, 1933, 1938)
Acerates hirtella