Data mode


Sign up

Copy permalink to share

Silphium asteriscus Linnaeus var. latifolium (A. Gray) J.A. Clevinger. Phen: Jul-Sep. Hab: Woodlands, roadsides. Dist: VA, WV, and KY south to GA and LA.

Origin/Endemic status: Endemic

Taxonomy Comments: This taxon appears to occasionally intergrade with S. integrifolium in the western edge of its range, and more commonly intergrade with S. asteriscus var. trifoliatum in the Interior Plateau and Cumberland Plateau. However, in the broad core of its range (spanning a region of AL, TN, and KY) populations of S. asteriscus var. latifolium are morphologically consistent and readily recognizable, with large leaves uncharacteristic of both S. integrifolium and S. asteriscus var. asteriscus. Some recent authors have chosen species status, under the name Silphium glabrum. The taxonomy and map are very speculative.

Synonymy: = Silphium glabrum Eggert ex Small – S, Tn; = Silphium laevigatum Pursh – RAB; = Silphium trifoliatum L. var. latifolium A.Gray – C, F, G, K1, SE1, Perry (1937); < Silphium asteriscus L. – Va; < Silphium asteriscus L. var. latifolium (A.Gray) Clevinger – FNA21, K3, K4; ~ Silphium confertifolium Small; < Silphium trifoliatum L. – W

Show in key(s)

Show parent genus

Heliophily: 7

Your browser does not support SVGs

Hover over a shape, letter, icon, or arrow on the map for definition or see the legend.

image of plant© Joey Shaw source | Original Image ⭷
image of plant© Joey Shaw source | Original Image ⭷


See something wrong or missing on about Silphium asteriscus var. latifolium? Let us know here: (Please include your name and email if at all complicated so we can clarify if needed.)

Cite as...