MUL BOC HA ET E 43 
32. B. pyrulum Lundell. 
(Pl. IV, fig. 30.) 
In Hirn 1900, p. 342, Pl. LV and LVI, fig. 3538; Heering 1914, p. 288, fig. 369; 
Tiffany 1928, p. 145, Pl. XVII, fig. 30. 
Dioecious, nannandrous, (?) idioandrosporous; oogonium pyriform, 
patent, below terminai setae, wall thickened; division of suffultory 
cells submedian; outer oospore wall finely scrobiculate; dwarf males 
near or on oogonia, antheridia interior, stipe a little curved, shorter 
than antheridium: vegetative cells 23-29X64-178u; oogonia (58-) 
68-85 X 64-79"; oospores 65-83 61-774; dwarf males 11-14 29-33u. 
Austria, Sweden, Finland. 
33. B. doliiformis Borge. 
(Pl. VI, figs. 39 and 40.) 
1925, p. 11, Pl. 1, fig. 41; Tiffany 1928, p. 145, Pl. XIX, figs. 39 and 40. 
Dioecious, nannandrous; oogonia ellipsoid, erect, below terminal 
setae; suffultory cell without division; oospores ellipsoid, not quite 
filling oogonia, wall smooth; dwarf males on vegetative cells, antheridia 
exterior, 2; vegetative cells 11-15X11-16u; oogonia 23-25 X 26-33; 
oospores 22—23 X27-28u; dwarf male stipe 10-12X10-12y; antheridia 
7-8 X 7-8. 
Argentina: 
This species is near B. pygmaea in size and shape of cells 
and in having suffultory cells without division. The plant is 
few celled with the vegetative cells convex, as seen laterally, 
sometimes with a broad median constriction, and the oospore 
wall is smooth. 
34. B. pygmaea Pringsheim; Wittrock. 
(Pl. VI, fig. 41.) 
In Wittrock 1870, p. 141; B. pygmaea b. minor Pringsh. 1858, p. 74; B. pygmaea 
Wittr. 1870, p. 141; Wittrock 1874, p. 52; Hirn 1900, p. 356, Pl. LIX, fig. 372; Collins 
1909, p. 273; Heering 1914, p. 239, fig. 374; Tiffany 1928, p. 145, Pl. XIX, fig. 41. 
Dioecious, nannandrous, gynandrosporous; oogonia ellipsoid, patent, 
below terminal setae or vegetative cells; outer wall of oospore longi- 
tudinally ribbed; suffultory cells without division; androsporangia 
subepigynous or scattered, I—? celled; dwarf males near oogonia, 
antheridia exterior, 1-3; vegetative cells 11-15 X8—15y; oogonia 22-25 X 
32-40u; oospores 20-23X30-38u; androsporangia 7-106-9u; dwarf 
male stipes 11-12 15-19; antheridia 7-8 X 7-8u. 
United States: Massachusetts; Europe, Brazil. 
35. B. tenuis (Wittrock) Hirn. 
(Pl. VII, fig. 59.) 
1900, p. 368, Pl. LXIII, fig. 388; B. rectangularis Wittr. var. tenuis Wittr. 
1874, p. 56; B. rectangularis Wittr. var. norvegica Wittr. 1874, p. 56; B. tenuis (Wittr.) 
Hirn var. norvegica (Wittr.) Hirn 1900, p. 369 (not 1906, p. 60); Collins 1912, p. 89; 
Heering 1914, p. 242, fig. 381; Tiffany 1928, p. 146, Pl. XX, fig. 59. 

