OEDOGONIUM yas 
hypogynous; sperms 2, division horizontal; vegetative cell 12-15x 
35-75u; oogonium 40-43 X 38-44; oospore 33-35 X 33-85y; antheridium 
11-14X 10-15z. 
United States: Massachusetts; Austria, Bulgaria, Finland, 
France; Ceylon; Brazil. 
Cf. Oe. crispum (No. 109). 
109. Oe. crispum (Hassall) Wittrock. 
(Pl. XXXV, fig. 319.) 
Vesiculifera crispa Hass. 1845, p. 203, Pl. 52, fig. 8; Oe. crispum Wittr. 1874, 
p. 10; 1876, p. 45; Oe. rostellatum Pringsh. 1858, p. 69, Pl. 5, fig. 1; (?) Vestculifera 
vernalis Hass. 1848, p. 434; (?) V. candollei Hass. 1845, p. 208, Pl. 52, fig. 9; Oe. 
vernale Wittr. 1874, p. 10; Oe. crispum (Hass.) Wittr. var. elongatum Wittr. 1876, 
p. 45; Oe. hispanicum Lewin 1888, p. 16, Pl. 2, figs. 40-42; Hirn 1900, p. 159, Pl. 
XXV, figs. 188 and 139; Oe. crispum (Hass.) Wittr. f. vernale (Hass.; Wittr.) Hirn 
1900, p. 161, Pl. XXV, fig. 141; Heering 1914, p. 214, fig. 334; Tiffany 1926, p. 101, 
Pl. III, fig. 29. 
Monoecious; oogonium usually 1, obovoid-globose, operculate, 
division superior; oospore globose or subglobose, quite filling the 
oogonium, spore wall smooth; antheridium 1—5, subepigynous or hypogy- 
nous; sperms 2, division horizontal; basal cell elongate, terminal cell 
apically obtuse; vegetative cell (10—) 12-16 X35-80u; oogonium 37-45 x 
41—53u; oospore 35-43 X37-43y; antheridium 8-14 7-12u. 
United States: Colorado, Pennsylvania, California, Michi- 
gan, Mississippi, [linois, Ohio, Iowa, Alaska; Austria, England, 
Denmark, Finland, France, Germany, Italy, Spain, Sweden; 
Africa; Asia; Australia; Bolivia; Patagonia; Greenland; Van- 
couver, British Columbia. 
109a. Form granulosum (Nordstedt) Hirn. 
(Pl. XXXV, fig. 322.) 
1900, p. 162, Pl. XXV, fig. 142; Oe. crispum (Hass.) Wittr. var. granulosum 
Nordst. 1877, p. 24; De Toni 1889, p. 37. 
Oogonium subglobose, filled by oospore; antheridium subepigynous; 
spore wall of oospore punctate-granulate; vegetative cell 14-17 
35-63y; oogonium 40-43 x 42—45u; oospore 37-40 X 37—40u; antheridium 
11-13 8-11. 
Sweden. 
109b. Form inflatum Hirn. 
(Pl. XXXV, fig. 323.) 
1900, p. 161, Pl. XXV, fig. 140; Oe. vesicatum Link var. flavescens Kuetz. in 
Rabenh. Alg. Sachs. No. 271, 1853; Oe. rostellatwm Pringsh. in ibid. No. 2275, 1872. 
Oogonium obovoid-globose; vegetative cell 12-16 X35—-95y; oogonium 
40-50 X 45-53; oospore 37-45 X 38—-45u; antheridium 8-12 *9-12u. 
United States: Michigan, Florida, Mississippi; Switzerland, 
Sweden, Germany; South Africa. 
