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Silphium compositum Michaux var. compositum . Carolina Rosinweed. Phen: May-Sep. Hab: Longleaf pine sandhills, other xeric forests and woodlands, roadbanks. Dist: As currently broadly circumscribed, distributed from VA south to GA, and west to AL.

Origin/Endemic status: Endemic

Taxonomy Comments: Perhaps worth dividing further into two taxa: S. compositum sensu stricto, restricted to the Coastal Plain and extreme lower Piedmont, and distributed from se VA through the Carolina Coastal Plain to extreme e. GA, a distribution very similar to those of Carphephorus bellidifolius, Cirsium repandum, and Vaccinium crassifolium; and S. collinum Greene, with less deeply lobed leaves, and distributed from se. and sc. VA, nc. NC, sw. NC and ne. AL south to sc. SC, c. GA, and ec. AL.

Synonymy : = K1, Va, Perry (1937); = Silphium compositum Michx. – F; = Silphium compositum Michx. ssp. compositum – Sweeney (1970); > Silphium collinum Greene; < Silphium compositum Michx. – C, FNA21, G, K3, K4, SE1, Tn, W; > Silphium compositum Michx. – S; < Silphium compositum Michx. var. compositum – RAB; > Silphium orae Small – S

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image of plant© Gary P. Fleming | Original Image ⭷
image of plant© Alan Weakley source | Original Image ⭷
image of plant© Gary P. Fleming | Original Image ⭷
image of plant© Gary P. Fleming | Original Image ⭷
image of plant© Alan Weakley source | Original Image ⭷
image of plant© Alan Weakley source | Original Image ⭷
image of plant© Gary P. Fleming
image of plant© Alan Weakley source | Original Image ⭷
image of plant© Alan Weakley source | Original Image ⭷
image of plant© Alan Weakley source | Original Image ⭷

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