Wildflowers, Grasses and Other Nonwoody Plants
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Species Types
Scientific Name
Cirsium altissimum
Description
Tall thistle is a native thistle that can grow to be 10 feet tall! To identify it, notice its leaves, which are unlobed (though they may be wavy or have only shallow, broad lobes), are felty-hairy beneath, and have prickles only along the edges.
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Scientific Name
Lythrum salicaria
Description
Anyone who’s seen what purple loosestrife has done to New England and the Northeast can tell you how invasive this plant is. Learn how to identify it, so you can report any findings to the Missouri Department of Conservation.
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Scientific Name
Boltonia decurrens
Description
A big river floodplain species, decurrent false aster has declined as wetlands have been drained and converted to agricultural crop production.
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Scientific Name
Lespedeza cuneata
Description
Decades ago, sericea lespedeza was introduced in hopes it would provide hay, improve pastures, stop soil erosion, and supply food and cover for wildlife. Unfortunately, it has proven to be an aggressive, invasive weed that is extremely difficult to control, escapes cultivation, and outcompetes native plants.
Species Types
Scientific Name
Lespedeza thunbergii
Description
Thunberg’s lespedeza is a large, nonwoody perennial shrub often cultivated as a showy, flowering ornamental. It sometimes escapes from cultivation and naturalizes in Missouri landscapes.
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Scientific Name
Asclepias incarnata
Description
Swamp milkweed has pink flower clusters at the tips of its tall stalks. The leaves are opposite, narrow, and up to 6 inches long. It grows in moist bottomland soils.
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Scientific Name
Physostegia virginiana
Description
False dragonhead is called "obedient plant" because when you push one of the flowers sideways, it "obediently" stays in place for a while.
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Scientific Name
Apocynum cannabinum
Description
Indian hemp is a shrubby, upright perennial with opposite branches and milky sap. This native plant can be a troublesome weed in crop fields and gardens, but Native Americans used its tough, fibrous stems for rope-making.
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Scientific Name
Passiflora incarnata
Description
The bizarre, complicated flowers attract attention! The fruits are edible. Passion flower is a nonwoody vine that climbs via tendrils on trees or other structures. It is native to the southeastern United States, including southern Missouri.
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Scientific Name
Symphyotrichum pilosum (formerly Aster pilosus)
Description
White heath aster is one of Missouri's most widespread and weedy native asters. It grows in uplands, bottomlands, and nearly all habitats in between. It has a shrubby, wide-branching habit, and the stem leaves are thin and needlelike.
See Also
About Wildflowers, Grasses and Other Nonwoody Plants in Missouri
A very simple way of thinking about the green world is to divide the vascular plants into two groups: woody and nonwoody (or herbaceous). But this is an artificial division; many plant families include some species that are woody and some that are not. The diversity of nonwoody vascular plants is staggering! Think of all the ferns, grasses, sedges, lilies, peas, sunflowers, nightshades, milkweeds, mustards, mints, and mallows — weeds and wildflowers — and many more!