40 HE. OE DOGONTACHE Ace 
23. B. setigera (Roth) C. A. Agardh. 
(Pl. V, fig. 37.) 
1817, p. 71; Conferva setigera Roth 1806, p. 283; B. setigera C. A. Agardh 1817, 
p. 71; Wittrock 1874, p. 47; (?) B. setigera var. Canbyit Wood in Wolle 1887, p. 99; 
(2?) B. Canbyit, Wood 1872, p. 202; Hirn 1900, p. 339, Pl. LV, fig. 351; Collins 1909, 
p. 271; Heering 1914, p. 236, fig. 367; Tiffany 1928, p. 142, Pl. XVIII, fig. 37. 
Dioecious, nannandrous, gynandrosporous; oogonia subdepressed or 
depressed (quadrangularly) globose, patent, generally below terminal 
setae, more rarely below androsporangia or vegetative cells; division of 
suffultory cell slightly above median or rarely superior; outer oospore 
wall scrobiculate; androsporangia scattered or more rarely epigynous, 
1-3; dwarf males on oogonia or near it; antheridia interior, stipe curved, 
shorter than antheridium; vegetative cells 25-2862-140yu; oogonia 
70-80 X 56-654; oospores 67-77 X53-62y; androsporangia 16-20 
10-184; dwarf males 11-14 *30-36u. 
United States: Connecticut, New Jersey, Florida, Alabama, 
South Carolina, Michigan; Europe, South America; Africa. 
24. B. alabamensis Transeau and Brown. 
(Pl. V, fig. 38.) 
In Tiffany 1928, p. 142, Pl. XVIII, fig. 38. 
Dioecious, nannandrous, gynandrosporous; oogonia globose, 
depressed globose, or rarely angularly globose, patent; division of 
suffultory cells superior; outer spore wall scrobiculate; androsporangia 
hypogynous or epigynous or rarely scattered; dwarf males, a little 
shorter than oogonia, on vegetative cells, antheridia interior, stipe a 
little curved; vegetative cells 22-40 X 62-111; oogonia 77—92 X 70-88y; 
oospores 75-90 X68-86yu; dwarf male stipes 14-18 *35-38y; antheridia 
14-15 X 15-16. 
United States: Alabama. 
In form and general appearance this species is near B. 
setigera. It is larger, however, in all dimensions and is thus the 
largest globose species of the genus. 
25. B. dispar Wittrock. 
(Pl. II, fig. 23.) 
In Wittrock and Nordstedt Exs. 1882; Hirn 1900, p. 335, Pl. LIV, fig. 344; 
rotus 1909, p. 270; Heering 1914, p. 234, fig. 363; Tiffany 1928, p. 142, Pl. XVI, 
(2 Re 
Dioecious, nannandrous, gynandrosporous and idioandrosporous; 
oogonia subdepressed globose, patent, below terminal setae or rarely 
vegetative cells; division of suffultory cell superior (rarely submedian) ; 
outer spore wall thick, finely scrobiculate; androsporangia scattered, 
1—2; dwarf males on oogonia, antheridia interior, stipe a little curved, 
shorter than antheridia; vegetative cells 16—21X32-95u; oogonia 
44-56 X42-51lu; oospores 40-54X38-48u; androsporangia 12-16X 
10-12u; dwarf males 9-11 *23-26un. 
Sweden, Greenland. 
