Field Guide

Wildflowers, Grasses and Other Nonwoody Plants

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Vertical image closeup of sweet flag spadix
Species Types
Scientific Name
Acorus calamus (syn. A. calamus var. calamus)
At a glance, the upright sword-shaped leaves of sweet flag make it resemble cattails or irises. Like them, sweet flag also lives in wet soils. But the flower heads are distinctive, and details of the leaves set them apart, too.
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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!