. Carnegie Institution of Washington publication. LIST OF ILLUSTRATIONS. 24. Underground portion of Anogra cinerea 25. Underground portion of Chrysopsis hispida 26. Root system of Pentstemon ambigu- us 27. Buffalo grass in short-grass-plains association 28. Root system of Andropogon sco- parius excavated in the sand- hills 29. Bisect through the roots of Aristida purpurea growing in the sand- hills 30. Psoralen tenuifiora in short-grass- plains association 31. Andropogon hallii excavated in the sandhills 60 62 63 73 80 84 86 91 PAGE 32. Root system of Avena saliva grown in moist silt-loam soil
. Carnegie Institution of Washington publication. LIST OF ILLUSTRATIONS. 24. Underground portion of Anogra cinerea 25. Underground portion of Chrysopsis hispida 26. Root system of Pentstemon ambigu- us 27. Buffalo grass in short-grass-plains association 28. Root system of Andropogon sco- parius excavated in the sand- hills 29. Bisect through the roots of Aristida purpurea growing in the sand- hills 30. Psoralen tenuifiora in short-grass- plains association 31. Andropogon hallii excavated in the sandhills 60 62 63 73 80 84 86 91 PAGE 32. Root system of Avena saliva grown in moist silt-loam soil 102 33. Root system of Trilicum azstivum grown in moist silt-loam 104 34. Root system of Secale cereale grown in sandy soil 118 35. Root system of Medicago saliva, months old 130 36. Root system of Melilotus alba about 4 months old 130 37. Root system of Helianthus annuus about months old. .facing 136 38. Root system of Trifolium pratense about months old 137 39. Mature root system of Trifolium pratense 137. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Carnegie Institution of Washington. Washington, Carnegie Institution of Washington
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