158 LHE: ObD.OGONLACEAS 
gynous; dwarf male curved, on the suffultory cell, stipe sometimes 
2-3 celled, upper cells long, antheridium exterior, 1-2; vegetative cell 
12-21 40-125u; suffultory cell 16-25 26-76u; oogonitum 35-48X 
50-63; androsporangium 16-21 12-15u; dwarf male stipe, upper cell 
6-8 X 55-71; lower cell 9-12 X 30-38y; antheridium 6-8 X9-15yu 
United States: Ohio, Illinois, Iowa, Michigan, New York, 
Massachusetts; Austria, England, Finland, France, Germany, 
Norway, Sweden; Brazil; Manchuria; ‘Madagascar; British 
Columbia. 
195a. Form boreale (Wolle) Hirn. 
(Pl. LX, fig. 590.) 
1900, p. 245, Pl. XLI, fig. 256; Oe. acrosporum De Bary var. boreale Wolle 1887, 
p. 84, Pl. 79, figs. 10 and 11. 
Filaments few-celled; vegetative celi 14-16 45-80p. 
United States: Pennsylvania, New Jersey. 
It is very doubtful if this form of the genus is tenable. 
The plant described by Wolle seems to have had fewer cells to 
the filament than the species proper. From data at hand 
regarding other species, it appears this variability in the num- 
ber of the cells is largely a matter of environmental conditions. 
There are some species in the genus, however, that are never 
found except with very few cells to a filament. The form is 
retained until more definite data can be secured regarding its 
variations. If itis normally few celled, Wolle’s varietal position 
must be maintained. 
195b. Var. bathmidosporum (Nordstedt) Hirn. 
(Pl. LX, fig. 592.) 
1900, p. 246, Pl. XLII, fig. 259; Oe. bathmidosporum Nordst. 1878, p. 179; Oe. 
acrosporum De Bary in Gutw. “1897, p. 8; Oe. acrospermum De Bary in P. B. A. No. 
163, 1896. 
Smaller; ribs fewer, 11-17, evidently crenulate; dwarf male stipe 
unicellular; vegetative cell 12-17X35-125y; suffultory cell 15-22X 
40-110u; oogonium 30-4040-54u; dwarf male stipe 9- DE Ne 
antheridium 8-10 X9-12n. 
United States: Massachusetts; Austria, Sweden; Brazil. 
195c. Var. floridense Wolle. 
(Pl. LX, fig. 593.) 
1887, p. 83, Pl. 85, figs. 1 and 2; Hirn 1900, p. 246, Pl. XLI, fig. 258. 
Smaller with elongate vegetative cell and more tumid suffultory 
cell; dwarf male stipe 2-3 celled; vegetative cell 7-8 X 36-85; oogonium 
33-39 X 45-50. 
United States: Florida. 
The only record is that of Wolle. 
