Contents
Preface and Acknowledgments
Of Photographs and Fieldwork
How to Use This Guide
Part One. Solitary Seed Heads
Allium canadense, wild garlic
Anemone canadensis, Canada anemone
Anemone cylindrica, thimbleweed
Coreopsis palmata, prairie coreopsis
Dalea candida, white prairie clover
Dalea purpurea, purple prairie clover
Echinacea pallida, pale purple coneflower
Geum triflorum, prairie smoke
Helianthus pauciflorus, prairie sunflower
Heliopsis helianthoides, ox-eye sunflower
Monarda fistulosa, wild bergamot
Ratibida pinnata, gray-headed coneflower
Rudbeckia hirta, black-eyed Susan
Viola pedatifida, prairie violet
Part Two. Seeds in Follicles
Asclepias incarnata, swamp milkweed
Asclepias tuberosa, butterfly milkweed
Asclepias verticillata, whorled milkweed
Part Three. Seeds in Leaf Axils
Lithospermum caroliniense, hairy puccoon
Onosmodium molle, false gromwell
Part Four. Seeds in Racemes
Baptisia alba, white wild indigo
Baptisia bracteata, cream false indigo
Ceanothus americanus, New Jersey tea
Chamaecrista fasciculata, partridge pea
Delphinium virescens, prairie larkspur
Lespedeza capitata, round-headed bush clover
Lobelia siphilitica, great blue lobelia
Silphium laciniatum, compass plant
Part Five. Seeds in Spikes
Amorpha canescens, leadplant
Astragalus canadensis, milk vetch
Gentiana andrewsii, bottle gentian
Liatris aspera, rough blazing star
Liatris pycnostachya, prairie blazing star
Monarda punctata, spotted horsemint
Penstemon grandiflorus, large-flowered beardtongue
Ruellia humilis, wild petunia
Teucrium canadense, germander
Verbena hastata, blue vervain
Verbena stricta, hoary vervain
Part Six. Seeds in Umbels
Allium stellatum, wild prairie onion
Dodecatheon meadia, shooting star
Eryngium yuccifolium, rattlesnake master
Euphorbia corollata, flowering spurge
Lilium michiganense, Michigan lily
Pycnanthemum pilosum, hairy mountain mint
Pycnanthemum tenuifolium, slender mountain mint
Pycnanthemum virginianum, common mountain mint
Silphium integrifolium, rosinweed
Tradescantia bracteata, prairie spiderwort
Tradescantia ohiensis, Ohio spiderwort
Veronicastrum virginicum, Culver’s root
Zizia aurea, golden alexanders
Part Seven. Seeds in Panicles without Pappus Bristles
Achillea millefolium, western yarrow
Artemisia ludoviciana, white sage
Desmanthus illinoensis, Illinois bundle flower
Desmodium canadense, showy tick trefoil
Helenium autumnale, sneezeweed
Helianthus grosseserratus, saw-tooth sunflower
Parthenium integrifolium, wild quinine
Penstemon digitalis, foxglove beardtongue
Phlox pilosa, prairie phlox
Potentilla arguta, tall cinquefoil
Rudbeckia subtomentosa, fragrant coneflower
Part Eight. Seeds in Panicles with Pappus Bristles
Brickellia eupatorioides, false boneset
Eupatorium altissimum, tall boneset
Eupatorium perfoliatum, boneset
Euthamia graminifolia, grass-leaved goldenrod
Oligoneuron rigidum, stiff goldenrod
Solidago nemoralis, field goldenrod
Solidago speciosa, showy goldenrod
Symphyotrichum ericoides, heath aster
Symphyotrichum laeve, smooth blue aster
Symphyotrichum novae-angliae, New England aster
Vernonia fasciculata, ironweed
Leaf Identification
Table 1. Initial Flowering and Ripening Times
Table 2. Initial Ripening Time and Seed Duration after Ripening
Table 3. Number of Seeds Produced per Stalk
Glossary
References
Index