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138 ZYGNEMATACEAE 8i 8i SPORES NOT LATERALLY COMPRESSED MEDIAN WALL NOT SMOOTH 75. Diameter vegetative cells between 16 /x and 25 m 76 75. Diameter vegetative cells mostly between 25^ and /u. 35 77 75. Diameter vegetative cells between 35^1 and 60 i^ 84 75. Diameter vegetative cells between 60 /x and 125 /li 96 76. Spores ellipsoid, chromatophores 3, diameter vegetative cells 22- 26/x 76. Spores ovoid, chromatophores 2- 1, diameter vegetative cells 16- 117. S.c/iung/^ingensis 22 /i 108. S. puncticulata 76. Spores ellipsoid, chromatophores 3-2, diameter vegetative cells 20- 25^1 76. Spores ovoid, chromatophores 3- 2, diameter vegetative cells 23- 115. S. miamiana 25 109. S. aeqtiinoctialis 77. Zygospores ovoid 78 77. Zygospores ellipsoid 78. Chromatophores 2, diameter vegetative cells 25-32 jtt no. 5. rhizopus 78. Chromatophores 3-2, diameter vegetative cells 28-32 /^ in. 5. dictyospora 78, Chromatophores 2-4, diameter vegetative cells 30-37 /a, median spore wall double 135 78. Chromatophores 1-3, diameter vegetative cells 31-36 /a 112 78. Chromatophores 3-4, diameter vegetative cells 30-45 /a i33- "^^ fiuviatilis 79. Diameter spores usually less than 32 /x, 2 chromatophores 1 13. 5. fossa 79. Diameter spores between 32 and 43^1 79. Diameter spores usually more than 43 /u. 81 80. Median spore wall punctate or scrobiculate 82 80. Median spore wall reticulate 83 Chromatophores 2-3 (-4), diameter S. notabilis S. natchita spores 43-46 /x Chromatophores 3-4, diameter spores 1 14. 5. schmidtii 45-52 M i\G. S. smithii 79 80
82. Median spore wall double, outer SPIROGYRA 139 wrinkled, inner punctate iiy. S. chun\ingensis 82. Median spore wall single, finely scrobiculate 1 18. 5. orientalis 83. Chromatophores 2, spores very irregularly reticulate wo. S. rhizopus 83. Chromatophores 2-4, regularly reticulate 1 19. 5'. subcylindrospora 84. Zygospores ellipsoid 85 84. Zygospores ovoid 92 85. Chromatophores 2-3, diameter vegetative cells 34-37 M 120. iS. castanacea 85. Chromatophores 2-3, diameter vegetative cells yu. 42-48 121. S. mienningensis 85. Chromatophores 3, diameter vegetative cells 46-52 M 122. S. shantungensis 85. Chromatophores 3, diameter vegetative cells 50-60 /i 123. S. braziliensis 85. Chromatophores 3-5 86 86. Diameter vegetative cells mostly less than 55 /x 87 86. Diameter vegetative cells mostly more than 55 /x 90 87. Spore diameter mostly less than 54/A 88 87. Spore diameter 48-64 /a, 4-3 (-2) chromatophores 124. S. pulchrifigurata 87. Spore diameter 67-72 ju,, 3-5 chromatophores 125. S. torta 88. Median spore wall of a single layer 89 88. Median spore wall double, outer wrinkled, inner punctate 126. S.quadrilaminata 88. Median spore wall double, outer wrinkled, inner smooth 129. 5. subreticulata 89. Median spore wall finely, irregularly reticulate, spore 38-60 /a x 64-100 /«.... 127. S.rhizobrachialis 89. Median spore wall irregularly cor- rugate, spores 37-41 /A X 48-65/4 128. S. paraguayensis 90. Fertile cells cyUndric or enlarged 130. S. minor 90. Fertile cells inflated 91 91. Median spore wall intricately reticulate 131. S. brunnea 91. Median spore wall angularly punctate 132, S.scripta 92. Fertile cells inflated 93
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THE ZYGNEMATACEAE
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GRADUATE SCHOOL MONOGRAPHS Contribu
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INTRODUCTION The absence of a moder
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INTRODUCTION ix Illinois State Teac
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Plat€ ILLUSTRATIONS Plates Page I
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THE ZYGNEMATACEAE
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4 ZYGNEMATACEAE gametes is by means
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6 ZYGNEMATACEAE are common but are
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8 ZYGNEMATACEAE between cells, the
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10 ZYGNEMATACEAE sporiferous cells
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12 ZYGNEMATACEAE TABLE I Summary of
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14 ZYGNEMATACEAE In higher latitude
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i6 ZYGNEMATACEAE specimens with mat
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1 ZYGNEMATACEAE II. Spores usually
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20 ZYGNEMATACEAE 32. Diameter veget
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22 ZYGNEMATACEAE REPRODUCTION BY AP
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24 ZYGNEMATACEAE spores formed in t
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26 ZYGNEMATACEAE pitted; pits 5-6 /
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28 ZYGNEMATACEAE spores are formed
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30 ZYGNEMATACEAE spores formed in t
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32 ZYGNEMATACEAE biculate; pits 4.5
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34 ZYGNEMATACEAE United States: Ill
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36 ZYGNEMATACEAE zygospores globose
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38 ZYGNEMATACEAE spores formed in o
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40 ZYGNEMATACEAE spores in one of t
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42 ZYGNEMATACEAE an outer pectic la
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44 ZYGNEMATACEAE irregular in form
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46 ZYGNEMATACEAE cylindncum Transea
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CHAPTER THREE THE GENUS ZYGNEMOPSIS
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ZYGNEMOPSIS 51 6. Median spore wall
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ZYGNEMOPSIS 53 22-25 jLi X 25-30 /"
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ZYGNEMOPSIS 55 12. Zygnemopsis sple
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ZYGNEMOPSIS 57 23-50 Ai, with a mor
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quadrata Jao 1935 ZYGNEMOPSIS 59 si
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CHAPTER FIVE THE GENUS ZYGOGONIUM K
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ZYGOGONIUM 65 3. Zygospores 15-26/U
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ZYGOGONIUM 67 ospores ellipsoid to
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ZYGOGONIUM 69 14. Zygogonium stephe
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CHAPTER SEVEN THE GENUS MOUGEOTIOPS
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CHAPTER RIGHT THE GENUS DEBARYA WIT
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DEBARYA 77 3. Debarya ackleyana Tra
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CHAPTER NINE THE GENUS MOUGEOTIA C.
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MOUGEOTIA 8i not be cited as proof
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7. Spores globose to ovoid, variabl
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MOUGEOTIA 85 30. Spores ovoid 40-54
Page 107 and 108: MOUGEOTIA 87 52. Zygosporangia regu
Page 109 and 110: MOUGEOTIA 89 74. Spore wall smooth
Page 111 and 112: MOUGEOTIA 91 6. MouGEOTiA ELLiPsoiD
Page 113 and 114: MOUGEOTIA 93 tending somewhat into
Page 115 and 116: MOUGEOTIA 95 conjugation scalarifor
Page 117 and 118: MOUGEOTIA 97 pyrenoids; gametangia
Page 119 and 120: MOUGEOTIA 99 ous scattered pyrenoid
Page 121 and 122: MOUGEOTIA loi cylindric, with conca
Page 123 and 124: MOUGEOTIA 103 56. MouGEOTiA ATUBULO
Page 125 and 126: MOUGEOTIA 105 aplanospores occupyin
Page 127 and 128: MOUGEOTIA 107 with hornlike process
Page 129 and 130: MOUGEOTIA 109 77. MouGEOTiA viRiDis
Page 131 and 132: MOUGEOTIA III 85. MouGEOTiA QUADRAN
Page 133 and 134: MOUGEOTIA 113 94. MouGEOTiA MAYORi
Page 135 and 136: MOUGEOTIA 115 craterophora Bohlin 1
Page 137 and 138: CHAPTER TEN THE GENUS TEMNOGAMETUM
Page 139: CHAPTER ELEVEN THE GENUS SIROCLADIU
Page 143 and 144: CHAPTER THIRTEEN THE GENUS SPIROGYR
Page 145 and 146: SPIROGYRA 125 in thickness, and eac
Page 147 and 148: SPIROGYRA 127 may be widened and ne
Page 149 and 150: SPIROGYRA 129 Of the 2 species with
Page 151 and 152: SPIROGYRA 131 II. Most of the spore
Page 153 and 154: 31. Diameter vegetative cells more
Page 155 and 156: SPIROGYRA 135 END WALLS PLANE (one-
Page 157: 66. Spores 34-48 i". x 48-54^1 93-
Page 161 and 162: loi. Fertile cells cylindric, chrom
Page 163 and 164: 115. Diameter vegetative cells 130-
Page 165 and 166: SPIROGYRA 145 133. Reproducing by a
Page 167 and 168: SPIROGYRA 147 157. Median spore wal
Page 169 and 170: SPIROGYRA 149 178. Chromatophores i
Page 171 and 172: SPIROGYRA 151 3. Spirogyra juercens
Page 173 and 174: SPIROGYRA 153 China, Szechwan. The
Page 175 and 176: SPIROGYRA 155 matophore; conjugatio
Page 177 and 178: SPIROGYRA 157 23. Spirogyra affinis
Page 179 and 180: SPIROGYRA 159 cells to globose, 28-
Page 181 and 182: SPIROGYRA i6i qucntly misapplied th
Page 183 and 184: SPIROGYRA 163 scalariform; tubes fo
Page 185 and 186: SPIROGYRA 165 ellipsoid, ^P-^^i^ x
Page 187 and 188: Germany; Latvia; Yugoslavia; Finlan
Page 189 and 190: Coll.). SPIROGYRA 169 Dutch New Gui
Page 191 and 192: SPIROGYRA 171 formed by both gameta
Page 193 and 194: SPIROGYRA 173 This imperfectly desc
Page 195 and 196: SPIROGYRA 175 Vegetative cells 35-4
Page 197 and 198: SPIROGYRA 177 loi. Spirogyra polyta
Page 199 and 200: SPIROGYRA 179 formed by both gameta
Page 201 and 202: SPIROGYRA i8i is thin, brownish and
Page 203 and 204: SPIROGYRA 183 PI. 8, Figs. 87-88. A
Page 205 and 206: SPIROGYRA 185 United States: Widely
Page 207 and 208: SPIROGYRA 187 65-83 /x X 75-1 00 /x
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SPIROGYRA 189 150. Spirogyra reinha
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SPIROGYRA 191 cylindric or slightly
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SPIROGYRA 193 by both gametangia; f
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SPIROGYRA 195 although the tubes be
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wall. United States: Texas, Karnac,
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SPIROGYRA 199 found the earlier sta
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SPIROGYRA 201 matophore, making 3 t
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SPIROGYRA 203 199. Spirogyra unduli
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SPIROGYRA 205 United States: Iowa;
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SPIROGYRA 207 spores ellipsoid, 20-
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SPIROGYRA 209 iform; tubes formed b
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SPIROGYRA 211 tubes formed by both
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SPIROGYRA 213 forma gracilior). Czu
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SPIROGYRA 215 244. Spirogyra gratia
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SPIROGYRA 217 252. Spirogyra incons
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SPIROGYRA 219 iform; tubes formed b
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SPIROGYRA 221 zygospores ellipsoid
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SPIROGYRA 223 274. Spirogyra verruc
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SPIROGYRA 225 elliptica Jao 1935 83
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SPIROGYRA 227 mirabilis (Hassall) K
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SPIROGYRA 229 siibsalina Cedercreut
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232 ZYGNEMATACEAE Usually the matur
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234 ZYGNEMATACEAE cncd and rcilexcd
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236 ZYGNEMATACEAE Figs. H to K. Sir
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INDEX Roman numerals refer to plate
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grossii (Spirogyra), XXX, 6; 185 Ha
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punctiformis (Spirogyra), XXXIV, 5-
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PLATES
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PLATE 1 247.
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PLATE ir 249
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PLATE III 251
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PLATE IV 253
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PLATE V 255
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PLATE VI 257
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PLATE VII 259
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PLATE VIII 261
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PLATE IX 263
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PLATE X 265 '^=S
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PLATE XI 267
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PLATE XII 269
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PLATE XIII 271
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PLATE XIV 273
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PLATE XV 275
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PLATE XVI 277
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PLATE XVII 279
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PLATE XVIII 281
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PLATE XIX 283
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PLATE XX 285
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PLATE XXI 287
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PLATE XXII 289
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PLATE XXIII 291
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PLATE XXIV 293
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PLATE XXV 295
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PLATE XXVI 297
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PLATE XXVII 299
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PLATE XXVIII 301
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PLATE XXIX 303
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PLATE XXX 305
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PLATE XXXI 307
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PLATE XXXII 309
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PLATE XXXIII 311
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PLATE XXXIV 313
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PLATE XXXV 315
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PLATE XXXVI 317
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PLATE XXXVII 319
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PLATE XXXVIII 321
Page 343 and 344:
PLATE XXXIX 323
Page 345 and 346:
PLATE XL 325
Page 347:
PLATE XLI 327
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