Asteraceae / Aster Whorled Rosinweed (Silphium trifoliatum)
Plant Type: This is a herbaceous plant, it is a perennial which can reach a height of 3 Meters (10 feet ) . Often less than half that height.
Leaves: The leaves are whorled.
SILL-fee-um Common Name: Prairie dock, Rosinweed
These perennials are native to prairies and open woods of Canada and the central and eastern U.S. They have daisy-like, yellow blossoms and resinous sap that is harshly scented.
( Rosinweed )
Upright perennial with basal leaves. Leaves are oval to oblong, toothed to pinnate, and borne on long stalks. Corymb-like yellow flowers, resembling sunflowers, bloom in summer.
- Rosinweed (Silphium integrifolium)
- Rough Blazing Star (Liatris aspera)
- Rough Cinquefoil (Potentilla norvegica) ...
or rosinweed, large, coarse North American perennial herb (Silphium laciniatum) of the family Asteraceae ( family), found chiefly in open grasslands. The deeply cut leaves tend to point north and south.
Showy Rosinweed, Whole-Leaf Rosinweed, Rosinweed,Showy
Species:
Silphium integrifolium ...
Squarestem Rosinweed [English]: Silphium perfoliatum
Squarestem Spikerush [English]: Eleocharis quadrangulata
Squarestem Spikesedge [English]: Eleocharis quadrangulata
Squarrose Knapweed [English]: Centaurea triumfettii ...
(Rosinweed, Cup Plant)
Sinningia sellovii (Hummingbird Hardy Sinningia)
Solidago sp. (Goldenrod)
Spigelia marilandica (Indian Pink)
Stachys coccinea (Betony)
Verbena sp. And cultivars (Vervain)
Vernonia sp. and cultivars (Ironweed)
Yucca sp.
 See also: Sunflower, Cup plant, Ironweed, Lobelia, Iris
  
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