58 
115. 
115. 
wa. 
il7e 
Te 
LS: 
J 4 
121. 
121. 
123. 
123. 
125. 
125. 
127. 
127. 
129. 
129. 
131. 
131. 
133. 
133. 
135. 
135. 
137. 
137. 
137. 
THE OEDOGONIACEA®E 
(AP OoconiumlabouitoomGIoh ee ane eee 226. Oe. warmingianum* 
ITA Oozonitmtsso0pe 45-Onleeeeeeee eee eee ee 223. Oc. lageniforme* 
114), Oogonitum’3(/—49) x 54-16 ee ee 225. Oc. inflatum* 
Oogonium’/43>55.X 40-95 ues wae ee eee wee oe DU0s  Oemorizcs 
Oogonium 42-60 X 43-99y............. 209a. Oe. oryz@ var. seriosporum* 
116.. Outer oospore wall ribbed externally........ 50. Oe. exocostatum 
116:. Middile*oospore-wall sibbedextermallly2on.05- ee eee aes 117 
Ribsicontiniotisvandrentire’.. ..).he ae a ee ee DE ee eee 118 
Rubs) cranulatercnenate) crenulate yon pitcedaee ae ene eee ene 126 
Rabsidentate weer eerie cisions oe 57b. Oe.crenulatocostatumvar.aureum 
1837 Ribsb=22 stinenuamibers<245.:,. ae stan Le ae ee eee 9 
LIS.» cRalbs?26=3 byaaaenntarrally ex: aare.c cyte. esate coo cor eae Ore 120 
LIS Ribs —opmenum bDetasan teen seer re cae 51. Oe. kjellmanit 
Vegetative cell 10-15u in diameter................ 52. Oc. paulense 
Vegetative cell 24-30u in diameter................ 220. Oe. urceolatum* 
120, )AMIONOECIOUS feos etter Ae ee ae Ie ne ene 121 
120: SDiGEClOUSie yes co Bee oe I ee ee 123 
@osporeicompletely, fllinssoozonitime eee eee eee eee Ere ere 122 
Oospore not filling oogonium.......... 53b. Oe. paludosum var. parvisporum 
122. Oogonium 39-48u in diameter............... 53. Oc. paludosum 
122. Oogonium 54-63y in diameter... 58a. Oe. paludosum var. americanum 
Oospore usually completely filling oogonium....... 54. O8e. leiopleurum 
Oospore usually, not fillineioorontumil ese ee eee 124 
1245 Oospore ellipsoid? 5)... :nee eect eink als oe Oe Cee et ae 125 
124. Oospore ellipsoid-globose, rarely subglobose, 
55a. Oe. bosci f. dispar 
124. Oospore ellipsoid-obovoid or obovoid, 
55b. Oe. bosci var. notabile 
Diameter of oogonium 33-388yu......... 55c. Oe. boscu var. occidentale 
Diameter oroogonitmo9—olu.s.-.56 ee. eee 55. Oe. boscu 
126: Ribs t4=20 im nuimber? s7s..vac cn seeie sa.o ee ee ee ieee 127 
1265) Ribs s0-s5aninumiber ea -ree ree ace meee 56. Oe. margaritiferum 
126, Ribs 30-45 im number aa. ee -  e eee 51. Oe. kjellmanit 
Rabsitcrénulater ss in. iss Soe, Leer ih ee ee Pe: 128 
Ribstcnenatekecnccce ee caer, 57c. Oe. crenulatocostatum var. longiarticulatum 
IQSseuRabsidistinetlycrenulaite eee cece eee 57. Oc.crenulatocostatum 
128. Ribs scarcely crenulate.. 57a. Oe. crenulatocostatum f. cylindricum 
DI OSCLOUS Sf obi Sara ss os cre ites SOEs STO SPOS see 130 
IMionOE CIOS a shots tS as Bee atau ocet eee 58. Oe. arcyosporum 
130. Diameter of oogonium 30-35u. 57b. Oe. crenulatocostatum var. aureum 
130. Diameter of oogonium 48-60u............... 59. Oc. areolatum 
130. Diameter of oogonium 66-72y..............- 214. Oe. hoehnei* 
Oogoniumss—40 e581 One enieere 60. Oe. dictyosporum 
OogoniumrapoutAg <x o2ue nee eeeieee 60a. Oe. dictyosporum f. westit 
1322. Oogonitim) 35-388 Kv os—o8n) pps 4 eeeee 216. Oe. capense* 
1325. (Oogontum 53-69) < 6/106. eee 215. O6c. giganteum* 
IMFONOECLOUS 5 opine has 1c ee OR ear ee ee 61. Oc. foveolatum 
T)IGE CLOUS 2 os ae, cso sags ay cu tcatav sts tel sO SE ee ee 
134. “Diameter ot veretative cell —25 jn eee ee eae eee eee 135 
134° Diameter of vegetative cells25—18 ye se Sere ene eee 138 
Suftultory cell: enlarged, :2) bs Gclenes ee Ee eee 136 
Suttultony cell notenlarged...4 1... cose eee One eee ree 137 
136. Diameter of oogonium 40-48u............... 62. Oe. scrobiculatum 
136. Diameter of oogonium 56-58u............... 63. Oc. verrucosum 
136. Diameter of oogonium 64-76u............... 64. Oe. tiffanii 
Diameter of oogonium 38-45u...................-. 65. Oe. punctatum 
Diameter of oogonitim’ 45-530, .4- oes ease seca 66. Oc. argenteum 
Diameter of oogonitm( 51-645 255-5 eee en eee 67. Oe. wylier 
138. Length of oogonium 48-70y................. 68. Oe. americanum 
138. qveneth- of cogoniumiss—llspeer nee eee 69. O6c. taphrosporum 
*See footnote, page 53. 
