BwEp OCH AE T Eb 33 
7a. Form pumila Hirn. 
(Pl. I, fig. 2.) 
1900, p. 322, Pl. LI, fig. 328; Tiffany 1928, p. 135, Pl. XIV, fig. 2. 
Smaller; vegetative cells 10-15X25-60u; oogonia 31-37 X28-37u; 
androsporangia 10-11X9-llu; dwarf male stipe 8-1019-24n; 
antheridia 7-9 X6-8u. 
Brazil. 
7b. Var. scrobiculata Tiffany. 
(Pl. I, fig. 3.) 
1928, p. 135, Pl. XIV, fig. 3. 
Similar to the type except outer oospore wall is minutely scrobiculate; ° 
antheridia 1—2; vegetative cells 13-16 X 28—40y; oogonia 28-44 & 28-36; 
oospores 26-42 X26-34u; androsporangia 10-13X10-16u; antheridia 
6-8 X 4-7; dwarf male stipe 11-13 X 16—20u. 
United States: Alabama. 
This variety clearly belongs with B. elatior because of its 
exterior antheridia, although the oospore markings are similar 
to those of B. brebissonit. It is barely possible, of course, that 
B. elatior sometimes has scrobiculate oospores, although there 
is no evidence for it. Until such time as more is known about 
the variations, if any, in the oospore of the species, it seems 
best to catalogue the separate variety, as above. 
S. B. minuta West and West. 
(Pl. I, fig. 9.) 
1902, p. 126, Pl. 17, fig. 10; Hirn 1906, p. 25, Pl. IV, fig. 28; West 1916, p. 388, 
fig. 242: Tiffany 1928, p. 135, Pl. XIV, fig. 9. 
Dioecious, nannandrous, gynandrosporous: oogonia depressed- 
globose, patent or erect, below the androsporangia; division of oogonium 
median or nearly so; suffultory cells without division, or with division 
basal; oospore wall smooth; androsporangia unicellular, epigynous; 
dwarf males on suffultory cells, antheridia exterior, unicellular, stipe 
twice as long as antheridia, curved; vegetative cells 9-1218-35u; 
oogonia 29-35 X 24-27; oospores 27-33 X 22—25yu; androsporangia 9-11 
x6-9n; dwarf males 6-7 X 18-20p. 
Heneratgodha, Ceylon. 
B. minuta is among the smallest of the genus, the length of 
its oogonium being less than that of any other known species. 
9. B. brebissonii Kuetzing. 
(Pl. I, fig. 7.) 
1854, p. 19, Pl. 86, figs. B and f; B. tumida Wittr. 1870, p. 139; 1874, p. 46; Hirn 
1900, p. 323, Pl. LI, fig. 330; Collins 1909, p. 268; Heering 1914, p. 231, fig. 356; 
Tiffany 1928, p. 135, Pl. XIV, fig. 7. 
Dioecious, nannandrous gynandrosporous; oogonia depressed-sub- 
quadrangular-globose, erect, below terminal setae or androsporangia; 
