48 tT HE O-E DOiGONIMe Eee 
oospores 54-64% 67-94; androsporangia 18-21 15-334; dwarf male 
stipes 18-21 X30-33y; antheridia 9-14 X 6—-10y. 
United States: Massachusetts. 
The combination of dimensions and oospore markings 
rather readily separates this species from B. imperialis and 
B. insignis, its nearest relatives. 
43. B.denticulata Wittrock. 
(Pl. VI, fig. 51.) 
1874, p. 54; Hirn 1900, p. 362, Pl. LXI, fig. 379; Heering 1914, p. 240, fig. 377; 
Tiffany 1928, p. 150, Pl. XIX, fig. 51. 
Dioecious, nannandrous; oogonia broadly ellipsoid, patent, below 
terminal setae or rarely vegetative cells; outer oospore wall longitudinally 
ribbed, ribs often anastomosing; dwarf males on or near oogonia; 
antheridia exterior, 1-2; vegetative cells 27-3034-45u; oogonia 
48-54 X69-76u; oospores 46-5267—74y; dwarf male stipes 18-21 X 
30-31; antheridia 13-14X8-10y. 
Norway. 
44. B. affinis Hirn. 
(Pl. VU, fig. 61.) 
1900, p. 371, Pl. LXIII, fig. 392; B. minor Al. Br. in Borge 1896, p. 4; Tiffany 
1928, p. 150, Pl. XX, fig. 61. 
Dioecious, nannandrous, gynandrosporous; oogonia suboblong- 
ellipsoid to ellipsoid, patent or rarely erect, below terminal setae or 
androsporangia; outer oospore wall longitudinally ribbed, andro- 
sporangia epigynous, 1—’; dwarf males near or on oogonia, antheridia 
exterior, 1-3; vegetative cells 22-27X27-47u; oogonia 40-46 X 67-78y; 
oospores 38-44% 65-76u; androsporangia 18-19 23-30u; dwarf male 
stipes 17-19 X 22-28; antheridia 9-12 KX 9-13y. 
Australia. 
45. B.anomala Pringsheim. 
(Pl. VI, fig. 45.) 
1858, p. 73, Pl. 6, fig. 6; Wittrock 1874, p. 56; Hirn 1900, p. 366, Pl. LXII, fig. 
385; Heering 1914, p. 240, fig. 380; Tiffany 1928, p. 150, Pl. XIX, fig. 45. 
Dioecious, nannandrous; oogonia ellipsoid, erect, below vegetative 
cells; dwarf males near oogonia; antheridia exterior, 1-2; vegetative 
cells 26-27 X52-54y; oogonia 49-51 X75-80u; oospores 47-48 X 73-78y; 
dwarf male stipes 18X37; antheridia 13 X 13y. 
Germany. 
46. B. insignis Pringsheim. 
(Pl. VIII, fig. 62.) : 
1858, p. 73, Pl. 6, fig. 7; (2) B. pringsheimiana Archer 1866, p. 121; B. speciosa 
Wittr. 1870, p. 143; Wittrock 1874, p. 55; (?) B. pachyderma Reinsch 1875, p. 82; (?) 
B. anomala Pringsheim in Nordstedt 1888, p. 8; Hirn 1900, p. 364, Pl. LXII, fig. 383; 
Collins 1909, p. 274; Heering 1914, p. 240, fig. 379; Tiffany 1928, p. 150, Pl. X XI, 
fig. 62; P. B. A. Nos. 1332 and 14380. 
Dioecious, nannandrous, gynandrosporous; oogonia ellipsoid, erect 
or patent, below androsporangia or terminal setae or vegetative cells; 
oospores ellipsoid with broadly denticulate longitudinal ribs on the 
