. The ecological relations of roots . Published by the Carnegie Institution of WashingtonWashington, 1919 CARNEGIE INSTITUTION OF WASHINGTONPublication No. 286 Copfei this Bo0kwm^ first issued SEP 5 tS?f PRESS OF GIBSON BROTHERSWASHINGTON. D. C. CONTENTS. List of Illustrations. PAGEV Introduction. PAGE 1 I. The Prairies. Panicum virgatum 4 Andropogon furcatus 4 Andropogon scoparius Andropogon nutans 5 Stipa spartea 6 Koeleria cristata 6 Elymus canadensis 6 Agropyrum repens 6 Distichlis spicata 6 Sporobolus longif olius 7 Ajistida oligantha 8 Bulbilis dactyloides 8 Bouteloua gracilis 8 Liatris
. The ecological relations of roots . Published by the Carnegie Institution of WashingtonWashington, 1919 CARNEGIE INSTITUTION OF WASHINGTONPublication No. 286 Copfei this Bo0kwm^ first issued SEP 5 tS?f PRESS OF GIBSON BROTHERSWASHINGTON. D. C. CONTENTS. List of Illustrations. PAGEV Introduction. PAGE 1 I. The Prairies. Panicum virgatum 4 Andropogon furcatus 4 Andropogon scoparius Andropogon nutans 5 Stipa spartea 6 Koeleria cristata 6 Elymus canadensis 6 Agropyrum repens 6 Distichlis spicata 6 Sporobolus longif olius 7 Ajistida oligantha 8 Bulbilis dactyloides 8 Bouteloua gracilis 8 Liatris punctata 9 Liatris scariosa 9 Solidago rigida 9 Solidago canadensis 11 Silphium laciniatum 11 Amorpha canescens 11 Helianthus rigidus 11 Brauneria pallida 11 Petalostemon candidus 11 Vernonia baldwinii 12 Kuhnia glutinosa 12 Verbena stricta 12 Grindelia squarrosa 12 Glycyrrhiza lepidota 13 Astragalus crassicarpus 13 Psoralea tenuiflora 14 Psoralea argophylla 14 Baptisia bracteata 14 The Suhclimax Prairie 15 Brauneria pallida 15 Lygod
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