Wildflowers, Grasses and Other Nonwoody Plants
A spiny annual with bright yellow flowers and dandelion-like leaves, buffalo bur is an introduced member of the nightshade family.
Opuntia humifusa (formerly O. compressa)
Cacti make us think of the desert southwest, but there is at least one species native to Missouri. This prickly pear grows in glades, sand prairies, rocky open hillsides, and other dry, sun-soaked areas.
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!