Wildflowers, Grasses and Other Nonwoody Plants
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Species Types
Scientific Name
Ambrosia artemisiifolia
Description
Common ragweed is instantly recognizable by its ornate, 2–3 times pinnately lobed, hairy leaves. You’ve probably seen it many times and wondered what it was.
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Species Types
Scientific Name
Lycopus americanus
Description
Not the showiest of wildflowers, American bugleweed will catch your eye with its interesting geometry. The narrow, toothed leaves are opposite on the stalks and occur at right angles to the pair below.
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Species Types
Scientific Name
Xanthium strumarium
Description
Common cocklebur occurs statewide in open, disturbed, lowland habitats. It is a common weed in crop fields. It has wide, rough, coarsely toothed leaves; stout, often purple-speckled stems; and characteristic burs with hooked spines.
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Species Types
Scientific Name
Sicyos angulatus
Description
Bur cucumber is a nonwoody, native, annual vine common in low, moist soils. It can spread across an area 20 feet wide, covering the ground and nearby shrubs. Note its lobed, gourd-family leaves, curly green tendrils, clusters of prickly, green, oval fruits, and 5-lobed, cream-colored flowers.
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Species Types
Scientific Name
Viola spp.
Description
Violets, as a group, are fairly easy to identify, with their colorful five-petaled “faces” so welcome in springtime. Missouri has 17 species, and some are confusingly similar. This page introduces them as a group.
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Species Types
Scientific Name
Viola palmata (syn. V. triloba)
Description
The leaf blades of cleft violet are highly variable, and the plant produces differently shaped leaves as the season progresses. Midseason leaves have a broad central lobe flanked by additional lobes toward the base.
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Species Types
Scientific Name
Packera spp. (formerly Senecio spp.)
Description
Ragworts, or groundsels, have several common names, and separating the different species can be a little tricky. But members of genus Packera, with their bright yellow daisy-like flowers, are distinctive as a group. Seven species have been recorded in Missouri.
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Species Types
Scientific Name
Packera plattensis (formerly Senecio plattensis)
Description
Prairie ragwort is one of seven Packera species in our state. It grows in sunny, open habitats. Look for its clusters of bright yellow, daisylike flowers in May and June.
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Species Types
Scientific Name
Packera glabella (formerly Senecio glabellus)
Description
Butterweed, one of Missouri’s seven species of ragworts or groundsels, is the only one that is an annual. It grows in colonies, at times covering acres of floodplain. Stems are heavily ridged and usually inflated or hollow. It blooms April–June.
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!