Grasses: Panicum to Danthonia, Second Edition

List of Illustrations

ILLUSTRATIONS 1. Tufted perennial. 2. Rhizome. 3. Stolon. 4. Short, thick, subterranean crown. 5. Geniculate base of stem. 6. Two-ranked leaves. 7. Closed sheath. 8. Open sheath. 9. Plicate leaf. 10. Involute leaf. 11. Ligule. 12. Raceme. 13. Spike. 14. Spike-like raceme. 15. Open panicle. 16. Spike-like panicle. 17. Branch tip in Setaria. 18. Branch tip in Cenchrus. 19. Spikelet with bracts in two ranks. 20. Keelan glume. 21. Lemma, palea, and flower. 22. Callus at base of lemma. 23. Tuft of hairs at base of lemma. 24. One-flowered spikelet. 25. Several-flowered spikelet. 26. Lodicules. 27. Spiny bur of Cenchrus. 28. Spikelet with one perfect floret. 29. Spikelet with more than one perfect floret. 30. Digitate inflorescence. 31. Digitate inflorescence. 4 4 4 4 4 5 5 5 5 5 5 5 6 6 6 6 6 7 7 7 8 8 8 8 9 9 15 15 15 17 17 ix ix x / ILLUSTRATIONS 32. Spikelet of Triticum. 17 33. InRorescence of Lolium. 17 34. Spikelet of Setaria. 17 35. Paired spikelets of Elymus. 17 36. Spikelets of Hordeum. 17 37. Three-nerved glume of Triticum. 18 38. One-nerved glume of Secale. 18 39. Paired spikelets of Elymus. 18 40. Rachis with spikelets in Agropyron. 18 41. Densely pubescent lemma of Tridens. 18 42. Paired spikelets of Elymus. 18 43. Spikelets of Hordeum. 20 44. Awned glume of Phleum. 20 45. Lemma awned from middle in Calamagrostis. 21 46. Lemma awned from tip in Alopecurus. 21 47. Clumes united near base in Alopecurus. 21 48. Spikelet of Anthoxanthum. 21 49. Spikelet of Holcus. 21 50. Spikelet of Phalaris. 21 51. Lemma in Muhlenbergia. 21 52. Spike of Crypsis. 21 53. Spike of Sporobolus. 21 54. Apex of lemma two-toothed. 22 55. Lemma with an awn between the teeth. 22 56. Bearded callus of lemma of Schizachne. 22 57. Spikelet with short glumes in Bromus. 22 58. Spikelet with long glumes in Danthonia. 23 59. Spikelet of Triplasis. 23 60. Spikelet of Leptochloa. 23 61. Awn arising from middle of lemma in Aira. 23 62. Awn arising from base of lemma in Deschampsia. 23 63. InRorescence of Festuca. 24 64. InRorescence of Dactylis. 24 65. Apex of lemma two-toothed. 25 66. Spikelet with long glumes in Avena. 25 67. Silky-haired rachilla of Phragmites. 25 68. Beaked grain of Diarrhena. 69. Acute and mucronate lemmas of Tridens. 70. Lemmas of Redfieldia. 71. Cobwebby lemma of Poa. 72. Spikelet of Briza. 73. Spikelet of Chasmanthium. 74. Spikelet of Melica. 75. Spikelet of Glyceria. 76. Inflorescence of Festuca. 77. Inflorescence of Dactylis. 78. Keeled lemma of Poa. 79. United lodicules of Glyceria. 80. Free lodicules of Puccinellia. 81. Inflorescence of Bouteloua. 82. Inflorescence of Aristida. 83. Spikelet of Eriochloa. 84. Four-ranked spikelets of Echinochloa. 85. Spikelet of Oryzopsis. 86. Glume of Muhlenbergia. 87. Spikelet of Oryzopsis. 88. Spikelet of Stipa. 89. Spike of Gymnopogon. 90. Lemma of Calamagrostis. 91. Paired spikelets of Miscanthus. 92. Paired spikelets of Sorghastrum. 93. Inflorescence of Andropogon. 94. Inflorescence of Schizachyrium. 95. Inflorescence of Sorghum. 96. Paired spikelets of Microstegium. 97. Spikelet of Miscanthus. 98. Hairy spikelet of Trichachne. 99. Paired spikelets of Paspalum. 100. Spikelet of Eriochloa. 101. Spikelet of Leersia. 102. Spikelet of Zoysia. 103. Floret in Setaria with bristles. Illustrations I xi 25 26 26 26 26 27 27 27 27 27 28 28 28 28 28 28 30 30 30 31 31 31 31 32 32 33 33 33 34 34 34 34 35 35 35 36 xii / ILLUSTRATIONS 104. Glume of Hierochloa. 36 105. Spikelet of Beckmannia. 36 106. Spikelet of Milium. 37 107. Lemma of Calamovilfa. 37 lOB. Spikelet of Agrostis. 37 109. Spikelets of Schedonnardus. 37 llO. Spikelet of Dactyloctenium. 38 lll. Spikelet of Chloris. 38 ll2. Spikelet of Eleusine. 38 ll3. Cobwebby lemma in Poa. 39 ll4. Pistillate and staminate spikelets of Eragrostis reptans. 39 llS. Pistillate and staminate spikelets of Buchloe. 39 ll6. Pistillate and staminate spikelets of Distichlis. 40 ll7. Pistillate spikelets in Zea. 40 llB. Pistillate spikelets in Tripsacum. 40 llg. Inflorescence in Zizania. 41 120. Inflorescence in Zizaniopsis. 41 121. Panicum dichotomiflorum (Fall Panicum). 52 122. Panicum dichotomiflorum var. puritanorum (Panic Grass). 54 123. Panicum flexile (Slender Panic Grass). 56 124. Panicum gattingeri (Panic Grass). 58 125. Panicum philadelphicum (Panic Grass). 59 126. Panicum capillare var. capillare (Witch Grass). 62 127. Panicum capillare var...