CO 
bo 
THE OEDOGONIACEAE 
55b. Var. notabile Lemmermann. 
(Pl. XXVI, fig. 229.) 
1898, p. 511, Pl. 5, figs. 21-23; Hirn 1900, p. 125, Pl. XIV, fig. 78. 
Oogonium suboblong-obovoid; oospore obovoid or.ellipsoid-obovoid; 
vegetative cell 15-20X60-150u; oogonium 45-50X90-105u; oospore 
4449 X 75-85y. 
Germany. 
55c. Var. occidentale Hirn. 
(Pl. XXVI, figs. 227 and 228.) 
1900, p. 125, Pl. XIV, fig. 77, P. B. A. No. 1671. 
Smaller; vegetative cell 8-15 X50-165n; oogonium 33-388 X 75-100; 
oospore 32-37 X45-50u; antheridium 12-13 X 10-16u..- 
United States: Maine. 
To be compared with Oe. paludosum (No. 53) and Oe. 
letopleurum (No. 54). 
56. Oc. margaritiferum Nordstedt and Hirn. 
(Pl. XXVIH, fig. 234.) 
In Hirn 1900, p. 128, Pl. XV, fig. 83. 
Dioecious, macrandrous; oogonium 1, suboblong-ellipsoid or sub- 
obovoid-ellipsoid or subellipsoid, pore superior; oospore ellipsoid or 
globose-ellipsoid, usually not filling oogonium longitudinally (rarely 
quite filling it), spore wall of three layers: outer and middle layer with 
30-35 granulate, anastomosate, longitudinal ribs, inner layer smooth; 
antheridium to 10-seriate; sperms 2, division vertical; female vegetative 
cell 23-28 X82-190u, male 17-23 X70—160y; oogonium 50-63 X 82-100y; 
oospore 48-61 X 55-75; antheridium 18—20X7-138z. 
Brazil. 
The granulate ribs of the oospore are distinctive. Compare 
with Oe. kjellmanti (No. 51). 
57. Oe. crenulatocostatum Wittrock. 
(Pl. XXVIII, figs. 240 and 241.) 
Ss 
. 84; Collins 1909, p. 239; Heering 1914, p. 198, fig. 280; Tiffany 1926, p. 94, Pl. V, 
s. 48-50. 
Dioecious, macrandrous; oogonium 1-6, obovoid to subellipsoid, 
often terminal, pore superior; oospore of the same form as the oogonium, 
which it nearly or quite fills, outer spore wall smooth, median wall with 
14-20 longitudinal ribs, crenulate and sometimes anastomosing, inner 
wall smooth; antheridium 2-6, often alternating with vegetative cell; 
sperms 2, division horizontal; terminal cell obtuse to broadly apiculate; 
female vegetative cell 10-18 X25=125u, male 9-13 X32-80y; oogonium 
30-36 X 40-65; oospores 28-34 X 37—55y; antheridium 9-12 x 9—l4u. 
United States: Pennsylvania, Iowa, New York, Massa- 
chusetts, Ohio, Illinois, Connecticut, New Hampshire, Michigan. 
