44 eH Ee OSE DIO'GO NTA GE Ase 
Dioecious, nannandrous, gynandrosporous; oogonia suboblong- 
ellipsoid, erect or patent, below terminal setae or androsporangia; outer 
oospore wall longitudinally ribbed; androsporangia epigynous or more 
rarely scattered, 1-7; dwarf males on or near oogonia; antheridia 
exterior, 1-3; vegetative cells 13-16 X20-40u; oogonia 22-26 K 42-48; 
oospores 20-2440-46u; androsporangia 10-12*13-19u; dwarf male 
stipes 12-14 18—24u; antheridia 7-9 X 6—7u. 
United States: Massachusetts; Northern Europe. 
doa. Var. norvegica (Wittrock) Hirn. 
(Pl. VII, fig. 60.) 
1906, p. 60; Tiffany 1928, p. 146, Pl. XX, fig. 60. 
Larger vegetative cells and oogonia; vegetative cells 15-18 X 22-36u; 
oogonia 27-34X47-53u; oospores 25-3245-51u; dwarf male stipes 
12-14 19-23u; antheridia 8-9 8p. 
Finland. 
The dimensions of the variety norvegica as given by Hirn 
in his monograph (1900, p. 369) are so nearly the same as those 
of the species proper as to make its varietal position scarcely 
tenable. Material collected by Silfvenius in Finland in 1903 
is labelled variety norvegica by Hirn (1906) having the dimen- 
sions given above. It seems best, therefore, to consider the 
variety as having the dimensions as recorded for the Finnish 
material, and to regard the former description as included in the 
Species proper. 
36. B. repanda Wittrock. 
(Pl. VI, fig. 47.) 
1874, p. 55; B. rectangularis Wittr. var. Lundellii Wittr. 1874, p. 56; (?) B. 
rhadinospora Wittr. in Wolle 1887, p. 103; Hirn 1900, p. 363, Pl. LXI, fig. 380; Collins 
1909, p. 274; Heering 1914, p. 240, fig. 378; Tiffany 1928, p. 146, PI XIX, fig. 47. 
Dioecious, nannandrous, gynandrosporous; oogonia suboblong- 
ellipsoid, patent or erect, below androsporangia, terminal setae, or 
vegetative cells; outer oospore wall longitudinally ribbed; andro- 
sporangia epigynous or subepigynous, 1—’; dwarf males near or on 
oogonia; antheridia exterior, 1-3; vegetative cells, frequently repand, 
12-17 X 24-604; oogonia 26-36X43-58u4; oospores 21-33X40-50y; 
androsporangia 13-15<16—21u; dwarf male stipes 11—15x21-27,; 
antheridia 7-10 X5—7u. 
United States: Massachusetts, Maine, New Jersey, Florida; 
Greenland, Finland, Norway, Sweden, Germany. 
The peculiar repand appearance of the vegetative cells 
usually makes the identification of this species easy. | Occasion- 
ally a single plant may lack this vegetative character and may 
thus be confused with B. rectangularis or B. varians. 
