62 
203. 
203. 
205. 
205. 
207. 
207. 
209. 
209. 
211. 
211. 
213. 
213. 
215. 
215. 
217. 
yA 
217. 
219. 
219. 
219. 
221. 
221. 
223. 
223. 
225. 
225. 
225. 
227. 
227. 
THE OFDOGONTACE AE 
Sultulitory cell enlarged: Sai. acacia One eee eae eee 204 
Suitultorycellinot enlarzedtaea ace acter eres ee noe nena: eee 207- 
2042) Diameter oF oogoniumils5-O0 uae nae ee eee tee 205 
204. Diameter of oogonium 53-60u...138a. Oe. borisianum var. westit 
204.5 Diameter ofoogoniumilG5-S0uien.as toes een Oe 206 
Vegetative cell 12-15) XSG0-120 05. eee ee ee eee 137. Oe. silvaticum 
Vegetative cell 15-23’ X 45-150uge.......5.....5... 138. Oe. borisianum 
206. Suffultory cell 26-40u in diameter........... 139. Oe. alternans 
206. Suffultory cell about 44u in diameter........ 140. Oe. kitute 
Diameteriok vecetativercell 10-2004. eee nee ae ee 208 
Diameter of vesetativie:cell?21—A0w..2. 2 85 ee se aes oe ee eee 210 
208. Oogonium 24-35u in diameter............... 143. Oe. multisporum 
2083 ‘Oogoniumisos—ouanidiameterss-ce oe ae eee eee 209 
Oospore slo bOSesmee een acinne ee a ame 144. Oe. irregulare 
Oospore depressed-globose..... 0... =... 144a. Oe. irregulare var. condensatum 
210% “Diameteror oozonitims9-COus ae acaene sie eee eee 211 
210. Diameter of oogonium 65-80u............... 139. O6e. alternans 
Vegetativeicell l—3)idiametersilone-...41. sence eee eee eee 212 
Vegetative cell 3-6 diameters long? 2... cae eile ere tee eee 214 
2125 Oospore not falling oogonimm's. 4. eee eee 141. O8e. victoriense 
212°, ‘Oospore nearly or quite fille oogonium=...---s-se ee eee 213 
Oogonium 39-54 X 42-65u........... 142a. Oe. crassiusculum var. ‘arechavalete 
Oogonium 55-60 X 60-75u........... 142c. Oe. crassiusculum var. cataractum 
2I4e AGynandrosporouss. 1... scan One aoe 142. Oe. crassiusculum 
214. Idioandrosporous........ 142b. Oe. crassiusculum v var. idioandros porum 
Spines arranged: spirally’ . «mcs e.g cs «alehneliee acoso re oe ae eae 216 
Spines not arranged spiralliyaccunesece eens ae eee eee 217 
216. Diameter of antheridium 6-9n. .1386. Oc. stellatum 
216. Diameter of antheridium 9-10p. 145a. Oe. donnellii var. wittrockiana 
216. Diameter of antheridium 14-l5y............. 145. Oc. donnelli 
Diameter ofooconium: 29-scou..- cae cele ieee 146. Oc. armigerum 
Diameter of oozonitmiso—oOle.. 425-6 eee ene 147. O68. echinatum 
Diameter or ooronium 46—-o71. 4.555 seer 148. O8ce. lindmanianum 
Z18-eRAbSa6—2odn nium bene. eee oon BME cn ace Tuer 219 
218. GRibs25—40in number... css Govan eR or Se eee 223 
Oogonium 45-50u in diameter......... 149a. Oe. cyathigerum f. americanum 
Oogoniumi4s=6o nq inidiameters. 4... odes deacons Geen ne eee 220 
Oogonium 65-81y in diameter......... 149c. Oe. cyathigerum f. perfectum 
220. Oospore usually completely filling oogonium...................... 221 
220. Oospore incompletely filling oogonium, ‘ 
149d. Oe. cyathigerum var. ellipticum 
Dwart male4/—o8uin length. [oe sere bee oe ee ee Oe eee 222 
Dwarf male 60—75u in length.......... 149b. Oe. cyathigerum f. ornatum 
222. Diameter of oogonium 48-57y.149e. Oe. cyathigerum var. hormosporum 
222. Diameter of oogonium 5/—66u............... 149. Oe. cyathigerum 
Ribsienenttlate.~.cc ee oe e eeee 150a. Oe. wolleanum var. concinnum 
Rabsvenitine acy 2905 A 3 store scueciolas oeroerae lS TO eae ee Ne: ee 224 
Pp IRN OK Pays) elanbhanlOYSean5ocuunanedescancGonce 150. Oc. wolleanum 
224. Ribs 35-40 in number........... 150b. Oe. wolleanum f. insigne 
Pits more or less in longitudinal rows............. 151. Oe. concatenatum 
Pits not in longitudinal rows........ 15la. Oe. concatenatum f. hutchinsie 
Pits in vertical and transverse rows.151b. Oe. concatenatum var. rectangulare 
226: Oosporetibbed)...52.. ..anec eee ee 152. Oe. hunt 
220 OOsSporerechinate a4. ee ea eee sOe ee 153. Oe. hispidum 
226. “@ospore: dentatesis ca.n6 cca ieees be ene 227 
Oogonitumit/7—60_ x 48-0355. eee ee eee 154. Oc. cleveanum 
Oogonium 39-46u X 40-47u............ 154a. Oe. cleveanum f. exoticum 
228% Division ooogzonium median epereace eee eee oon eee 229 
228... Division of oosonitim supramedian=e shee eee eee eee 233 
228. Division of OOgOnitim intramediansers.s- eee eee ener 236 
228: Division of OO goniumisipentOne= ane nee eee eee eer rr 240 
228. . Division of oogonium"suprenie}.. 24st fate oe ee ee ee 261 
tSome forms of Oe. ciliatum may be sought here. 
