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preserved and constitute accurate representations of the composition of the original prairie vegetation as the pioneer first saw it.

Wild flowers, because of the conditions above suggested, are greatly depleted as compared with their abundance under virgin conditions. Among them are: day flower, spiderwort, rushes, wild onion, crow-poison, wild hyacinth, rain lily, irids, pigweeds, four o'clocks, umbrellaworts, chickweeds, sleepy catchfly, water lilies, Corydalis, mustards, dewberries, sensitive briar, Acuan, Neptunia, senna, Krameria, Amorpha, bur clover, ground plum, prairie clover, Psoralea, milk pea, Oxalis, flax, milkwort, Croton, Ditaxis, spurge nettle, princess spurge, many milk spurges, balloon vine, mallows, green violets, cacti, loose-strifes, evening-primroses, carrot relatives, milkweeds of many kinds, morning-glories (tie-vines), Phlox, borages, vervains, mints and sages, nightshades, figworts, Acanthus relatives, plantains, madders, honeysuckle, Valerianella, cucurbits, rag-weeds, cockleburrs, ironweeds, thoroughworts, Asters, everlasting, sunflowers, bitterweed relatives, squaw weeds, thistles, and dandelion relatives.