BwLbeocHArT E 49 
outer oospore wal!; androsporangia epigynous or scattered, 1-7; dwarf 
- males near or on oogonia; antheridia exterior, 1-3; vegetative cells 
19-25 X48-88u; oogonia 46-56X70-90u4; oospores 44-54 68-88u; 
androsporangia 16-20X9-25u4; dwarf male stipes 16-1929-33u; 
antheridia 10-13 X 7—10u. 
United States: Massachusetts, Michigan, Illinois, New 
York, New Jersey, Alaska; Europe, Australia. 
46a. Var. reticulata (Nordstedt) Hirn. 
(Pl. VIII, fig. 63.) 
1900, p. 365, Pl. LXII, fig. 384; B. reticulata Nordst. 1877, p. 32; Collins 1909, 
p. 275; Tiffany 1928, p. 151, Pl. XXI, fig. 63. 
Outer wall of oospore reticulate-dentate, with doubly dentate, 
occasionally anastomosing, longitudinal ridges, the teeth united to 
each other by transverse ridges; vegetative cells 20-25 X 40-87; oogonia 
44-52 X66-85y; oospores 42-50X64-83u; androsporangia 16-19 
13—23u; dwarf male stipes 17-20 X 30-33u; antheridia 11-13 x 6-9u. 
United States: Massachusetts, Illinois; Sweden, Denmark. 
47. B. imperialis Wittrock. 
(Pl. VIII, fig. 64.) 
‘ ao p. 54; Hirn 1900, p. 367, Pl. LXII, fig. 386; Tiffany 1928, p. 151, Pl. XXI, 
g. 64. 
Dioecious, nannandrous, gynandrosporous; oogonia broadly ellipsoid, 
erect, terminated by setae; outer oospore wall longitudinally ribbed, the 
ribs irregularly anastomosing or connected by transverse ribs; andro- 
sporangia scattered, 1-7; dwarf males on or near oogonia; antheridia 
exterior, 1-2 celled; vegetative cells 26-31 X32-106y; oogonia 81-83 
104-1084; oospores 79-81 X 102-1064; androsporangia 18-20 25-26; 
dwarf male stipes 19-21 X30-35u; antheridia 13-16 X 7-9u. 
Brazil. 
47a. Var. regalis Wittrock. 
(Pl. VII, fig. 65.) 
1874, p. 55; Hirn 1900, p. 367, Pl. LXII, fig. 387; Tiffany 1928, p. 151, Pl. XXI, 
fig. 65. 
Smaller than the type; vegetative cells 24-26X72-117u; oogonia 
68-70 X88-90u; dwarf male stipe 2039u; antheridia 15-16 6—7u. 
Brazil. 
48. B. spirogranulata West and West. 
(Pl. VII, figs. 57 and 58.) 
1902, p. 126, Pl. 17, figs. 8 and 9; Hirn 1906, p. 27, Pl. IV, fig. 29. 
Oogonia oblong-ellipsoid, subpatent; outer wall of oospore thick 
with longitudinal, crenulate ribs; androsporangia scattered; suffultory 
cells without division; setae long; vegetative cells, spirally granulate, 
9-12 31-57; oogonia 20-24 KX 48-49u; androsporangia 7-8 X 9-10. 
Heneratgodha, Ceylon. 
