46 Me Ome GoOntLA GE Aw 
Smaller in nearly all parts; ribs of oospore serrulate or smooth; 
vegetative cells 13-18X16-34y; oogonia 26-30X39-46u; oospores 
24-28 X37-44u; androsporangial cells 10-14X7—-l6u; dwarf male 
stipes 11-14 15—24y; antheridial cells 7-8 X5-7p. 
United States: Iowa, Ohio, Mississippi, Illinois, Pennsyl- 
vania; Brazil, India, Europe, Australia; British Columbia. 
38b. Var. hawaiensis Nordstedt. 
(Pl. VI, fig. 50.) 
P sae p. 21; Hirn 1900, p. 358, Pl. LX, fig. 375; Tiffany 1928, p. 148, Pl. XIX, 
2g. * 
Vegetative cells 13-18X17-36y4; oogonia 27-3044-54y; andro- 
sporangia 12-16 13-14; dwarf male stipes 17-18 X 28-31y; antheridia 
10-11 X 6-7. 
United States: Ohio, Illinois; Australia. 
39. B. lagoensis Wittrock. 
(Pl. VI, fig. 46.) 
4 me p. 53; Hirn 1900, p. 361, Pl. LXI, fig. 378; Tiffany 1928, p. 148, Pl. XIX, 
2g. 4 
Dioecious, nannandrous; oogonia ellipsoid, erect or rarely patent, 
below vegetative cells; outer oospore wall longitudinally ribbed, the ribs 
dentate and connected by transverse lines; dwarf males near oogonia; 
antheridia exterior, 1-2; vegetative cells 18-2323-35y; oogonia 
37-41 X 56-634; oospores 35-39X54-61u; dwarf male stipes 15-17 
X 24-25; antheridia 9-10 7-8u. 
Brazil. 
40. B. rhadinospora Wittrock. 
(Pl. VIII, fig. 66.) 
1874, p. 538; Hirn 1900, p. 372, Pl. LXIII and LXIV, fig. 393; Heering 1914, 
p. 242, fig. 383; Tiffany 1928, p. 148, Pl. XXI, fig. 66. 
Dioecious, nannandrous, gynandrosporous; oogonia  fusiformly 
ellipsoid, patent or rarely erect, below androsporangia or terminal 
setae or rarely vegetative cells; outer wall of oospore longitudinally 
ribbed, ribs smooth; androsporangia epigynous or rarely scattered, 
1—?; dwarf males on or near oogonia; antheridia exterior, 1-4; vegetative 
cells 15-22 20-44; oogonia 29-37 X61—80u; oospores 27-35 X 59-78; 
androsporangia 13-17X16-23u; dwarf male stipes 13-16X23-25p; 
antheridia 7-9 X6-S8u. 
Sweden. 
40a. Forma antiqua (Nordstedt) Hirn. 
(Pl. VIII, fig. 67.) 
1900, p. 372, Pl. LXIV, fig. 394; Nordstedt 1883, p. 154; B. varians Wittr. var. 
antiqua Nordstedt im Borge 1896, p. 4; Tiffany 1928, p. 148, Pl. X XI, fig. 67. 
Ribs of oospore crenulate; vegetative cells 15-21 X20-42u; oogonia 
32-37 X58-78u; oospores 30-35%X56-764; androsporangia 15-18X 
23-26u; dwarf male stipes 14-17 X 23-26y; antheridia 9-11 X6-10y. 
Australia. 
