104 THE OEDOGONTIACEAE 
United States: Massachusetts, Michigan; Finland, Ger- 
many, Spain, Norway, Sweden, Latvia, Russia. 
Oe. minus is one of the few species of the genus with spirally 
punctate vegetative cell and oogonial walls. It is easily 
separable from the nannandrous elegans (No. 155) and the 
macrandrous punctatostriatum (No. 85) not only by its mono- 
ecious habit but also by its size. 
85. Oe. punctatostriatum De Bary. 
(Pl. XXXIV, figs. 303 and 304.) 
1854, p. 47, Pl. 2, figs. 15 and 16; Hirn 1900, p. 152, Pl. XXIII, fig. 128. 
Dioecious, macrandrous; oogonium 1, depressed-globose, operculate, 
division median, rather wide and distinct; oospore depressed globose, 
not filling oogonium, spore wall smooth; antheridium to 10-seriate; 
sperm 1; wall of vegetative cell and oogonium spirally punctate; basal 
cell depressed-globose or subhemispherical, wall vertically plicate; 
female vegetative cell 18-22 38-128y, male 16-19 X 33-108; oogonium 
48-55 X38-48u; oospore 40-51 *35—-42u; antheridium 16-19 X6—12y; 
basal cell 28-31 x 21-25. 
United States: Iowa, Illinois, Florida, Michigan; England, 
Finland, France, Ireland, Germany, Norway, Russia, Latvia, 
Sweden; Brazil; Greenland; Australia; British Columbia. 
Cf. Oe. minus above. 
86. Oe. capitellatum Wittrock. 
(Pl. XXXIV, fig. 315.) 
1874, p. 7; oe eka Wittr. 1870, p. 122, and 1872, p. 23; Hirn 1900, p. 149, 
Pl. XXIIL, fiz. 1 
ee. oogonium 1, subdepressed or depressed globose, 
operculate, division median, narrow but distinct; oospore depressed 
globose, completing (or nearly so) oogonium, spore wall smooth; 
antheridium 1-2, subepigynous or hypogynous or rarely scattered: 
sperm (?) 1; vegetative cell capitellate; basal cell subhemispherical : 
terminal cell piliform: vegetative cell 6-9 X20-60yu; oogonium 20-25 x 
17-234; oospore 18-23X15-19u4; antheridium 6-7X8-9yu; basal cell 
16-18 X6-8y. 
United States: Ohio, Illinois, Mississippi, Alabama; British 
Columbia; Denmark, Finland, Sweden; Turkestan; Caucasus; 
Burma. 
Among the species with capitellate vegetative cells it is 
characterized by its monoecious habit and small size. It 
differs from Oe. quadratum below in the absence of angular- 
globose oogonia. 
