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148 ZYGNEMATACEAE 169. Zygospores ellipsoid 170 169. Zygospores ovoid 171 170. Chromatophores 2, diameter vegetative cells 29-32 /x 275. S. marchica 170. Chromatophores 2-4, diameter vegetative cells 28-33/1 244. S. gratiana 170. Chromatophores 2-3, diameter vegetative cells 37-40 /a 245. S. proavita 170. Chromatophores 2-3, diameter vegetative cells 42-58 /a 246. S. transeaiiiana 171. Zygospores ovoid, diameter 29-32 /x, 2 chromatophores 275. S. marchica 171. Zygospores ovoid, diameter 26-29/1, 2 chromatophores 241. S. tolosana 171. Zygospores ovoid, about 40 /a x 82- 86 /A, 2-3 chromatophores 245. S. proavita 171. Zygospores ovoid, diameter 45-50 /^ 2 chromatophores 243. S. hartigii 172. Zygospores ovoid 173 172. Zygospores ellipsoid 174 173. Chromatophores 2 to 4, receptive gametangia cylindrically inflated 247. S. rectangularis 17^. Chromatophores i or 2, second outer spore wall scrobiculate 240. S. areolata 174. Diameter vegetative cells less than 34 /a 175 174. Diameter vegetative cells more than 34/1 176 175. Chromatophores (i-)2, diameter zygospores 42-52^1, median wall dotted. 212. S.incrassata 175. Chromatophores 2, diameter zygospores 39-48^1, median wall smooth. . 242. S.hassallii 175. Chromatophores 2 or 3, diameter zygospores 60-64 /^ 25'^- ^- 'i'^^^S^ 176. Chromatophores 3, diameter zygospores 40-48 /i 248. iS". insignis 176. Chromatophores 3 or 5, diameter zygospores 45-60 /u, 249. S. fallax REPLICATE END WALLS TWO OR MORE CHROMATOPHORES, MEDIAN SPORE WALL NOT SMOOTH 177. Zygospores usually ellipsoid 178 177. Zygospores usually ovoid 181
SPIROGYRA 149 178. Chromatophores i to 3 179 178. Chromatophores 2 to 4 180 179. Median spore wall single 254. S. nawashini 179. Median spore wall double 255. S. tetrapla 180. Chromatophores (2-) 3-4, spore diameter 45-75 M, aculeate-reticulate 252. S. inconstans 180. Chromatophores 3-4, reticulate- spinose 251. S. acanthophora 180. Chromatophores 2-4, spore diameter 52-62 /a, mammillate-aculeate 253. S.borysthenica 180. Chromatophores 2, spore diameter 42-50 Ai, median wall double 264, S.crassispina 181. Chromatophores 2 182 181. Chromatophores (i-)2-3, diameter spore At, 45-60 median wall double. . . 256. S. reticulata 181. Chromatophores 4-3, diameter spore 52-71 ju., median wall double 258. S. crassivallicularis 182. Spores, diameter 39-45 fi, median wall single, reticulate 257. S. regularis 182. Spores, diameter 45-55 M, median wall double, inner granulate 259. S. granulata 182. Spores, diameter 51-55/^, median and outer walls double 260. S. quinquelaminata 182. Spores, diameter 46-68 a^, median wall double, reticulate 261. S. pseudogranulata REPRODUCTION WHOLLY OR MOST COMMONLY BY APLANOSPORES 183. End walls plane 184 183. End walls semireplicate, diameter vegetative cells i2-i/\fj- 198. S. narcissiana 183. End walls replicate, diameter vegetative cells 24-28 Ai 234. S. articulata 184. With I chromatophore 185 184. With 2 or more chromatophores 186 185. Sporangia cylindric, aplanospores ovoid 31- '^- oltmannsii 185. Sporangia enlarged or slightly inflated 29. S. mirabilis 185. Sporangia and sterile cells often inflated 38. 'S. aplanospora 186. With 2 to 3 chromatophores in each cell, spores ellipsoid 65. 5. maravillosa
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10 ib
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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
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MOUGEOTIA 87 52. Zygosporangia regu
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MOUGEOTIA 89 74. Spore wall smooth
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MOUGEOTIA 91 6. MouGEOTiA ELLiPsoiD
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MOUGEOTIA 93 tending somewhat into
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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 and 158: 66. Spores 34-48 i". x 48-54^1 93-
Page 159 and 160: 82. Median spore wall double, outer
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: SPIROGYRA 147 157. Median spore wal
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
Page 209 and 210: SPIROGYRA 189 150. Spirogyra reinha
Page 211 and 212: SPIROGYRA 191 cylindric or slightly
Page 213 and 214: SPIROGYRA 193 by both gametangia; f
Page 215 and 216: SPIROGYRA 195 although the tubes be
Page 217 and 218: 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
Page 341 and 342:
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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