OEDOGONIUM 167 
219. Oc. sol Hirn. 
(Pl. XXXITT, fig. 286.) 
1900, p.. 303, Pl. XXVIII, fig. 164. 
Oogonium single, globose, operculate, division superior; oospore 
globose, completely filling oogonium, spore wall of three layers: outer 
smooth, middle with 35-45 granulate ribs sometimes anastomosate, 
inner smooth; vegetative cell 13-15X65-110y; oogonium 46-55x 
46—55u; oospore 44-53 x 44-53. 
Brazil. 
If found to be dioecious, macrandrous, it is near Oe. tumt- 
dulum (No. 73) and should perhaps be considered a variety of it. 
220. Oe. urceolatum Nordstedt and Hirn. 
(Pl. XXVII, figs. 238 and 239.) 
In Hirn 1900, p. 293, Pl. XIV, fig. 81. 
Oogonium 1, obpyriform (rarely oblong-ellipsoid or subellipsoid), 
pore superior; oospore globose-ellipsoid or ellipsoid, not filling oogonium 
lengthwise, inflating lower part of oogonium, spore wall in three layers: 
outer smooth, middle with 15-20 entire, longitudinal ribs, sometimes 
anastomosate and often spirally curved, inner layer smooth; basal cell 
elongate; vegetative cell 24-30 120-210u; oogonium 58-70 100-125; 
oospore 54-60 X 58-70x. 
Brazil. 
To be compared with the monoecious Oe. paulense (No. 52) 
and with the dioecious Oe. boscit (No. 55). 
221. Oe. londinense Wittrock. 
1874, p. 39; Cooke 1884, p. 170, Pl. 65, fig. 4; Hirn 1900, p. 317. 
Oogonium: 1-2, globose, operculate, division median; oospore 
globose, quite filling oogonium; (?) antheridium 1-2, hypogynous; 
vegetative cell 10-15X15-75u; oogonium 33-35X33-43u; oospore 
27-32 X 27-32u; (?) antheridium 12 10-11p. 
England; (?) New Jersey. 
This species is very uncertain and Cooke’s figure helps none. 
It has very much the appearance of Oe. areschougiit (No. 160) 
except for Wittrock’s suspicion that it is monoecious. Quite 
likely Wittrock was wrong, and the ‘‘antheridia’’ are in reality 
androsporangia. 
222. Oe. consociatum Collins and Hervey. 
(Pl. XL, fig. 396.) 
1917, p. 37, Pl. I, figs. 1-4; Collins 1918, p. 65; P. B. A. No. 2068. 
Dioecious, ? macrandrous; oogonium single, globose to depressed- 
globose, operculate, division median to superior, narrow but distinct; 
oospore globose to depressed-globose, filling oogonium, spore wall 
smooth; basal cell depressed-globose; vegetative cell, more or less 
