- To +3m tall, branching, herbaceous, erect, striate, pubescent.
- Alternate, typically glabrous above, densely pubescent to lanate below, mostly entire with spined margins, sometimes lobed, to +30cm long, +10cm wide, sessile or short-petiolate, typically lanceolate, oblong, or elliptic, reduced towards apex.
Abaxial surface of leaf.
- Single flower heads terminating stems.
- To 3.5cm tall, +3cm wide, subglobose to vase-shaped. Phyllaries imbricate, appressed, spine (bristle) tipped, typically with a lighter midrib.
Involucre with the subtending bracts.
Involucre with the subtending bracts removed.
- Corolla pink to rose, to +30mm long, tubular, 5-lobed. Style well exserted. Achenes to 6mm long, 2mm wide. Pappus of numerous plumose bristles.
- This is the tallest of the plants in this genus in Missouri (
means "the tallest"). It is very common throughout the state except for the extreme southeastern corner. It is a common roadside plant in the Ozarks.
Steyermark lists a couple of forms for the species. The plant pictured above is form
. This plant has the typical rose-pink corolla. Form
has a white corolla and is listed in the "White flowers alternate" section of this website. The latter is much less common.
Photographs taken in the Ozark Scenic Riverways, Shannon County, MO., 8-9-03.
This plant is listed by the U.S. federal government or a state. Common names are from state and federal lists. Click on a place name to get a complete noxious weed list for that location, or click here for a composite list of all
Federal and State Noxious Weeds
This plant and the related entity italicized and indented above can be weedy or invasive according to the authoritative sources noted below.This plant may be known by one or more common names in different places, and some are listed above. Click on an acronym to view each weed list, or click here for a composite list of
Weeds of the U.S.
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