166 THE OEDOGONIACEAE 
(No. 151). It is doubtless a distinct species, no matter what 
its final description may be. 
216. Oe. capense Nordstedt and Hirn. 
(Pl. XXIX, fig. 257.) 
In Hirn 1900, p. 293, Pl. XV, fig. 88. 
Oogonium 1-3, obovoid to ellipsoid, pore. superior; oospore of same 
form as oogonium and filling it, spore wall in three layers: outer smooth, 
middle pitted, with pits in 25-30 longitudinal rows, inner layer smooth; 
basal cell elongate; vegetative cell 13-17 X40-100yu; oogonium 35-38 X 
53-58; oospore 33-35 X 46-48. 
Africa. 
This species is perhaps dioecious, macrandrous, although 
- antheridia are unreported. Cf. Oe. giganteum above. 
217. Oe. moniliforme Wittrock. 
(Pl. XII, fig. 114.) 
1874, p. 40; Hirn 1900, p. 288, Pl. V, fig. 28. 
Oogonium 1-5, pyriform to globose-obovoid or subglose, pore 
supramedian; oospore globose or subdepressed-globose, not filling 
oogonium, middle layer of spore wall scrobiculate; terminal cell apically 
obtuse; vegetative cell 9-11X30-54y; oogonium 23-28 28-35y; 
oospore 22-27 X 22-26n. 
United States: Michigan, Ohio; Sweden. 
- The small size of this species together with its definitely 
scrobiculate spore wall makes it readily identifiable, even though 
antheridia have not been so far observed. 
218. Oe. inerme Hirn. 
(Pl. XI, fig. 110.) 
1900, p. 287, Pl. II, fig. 10. 
(?) Dioecious; macrandrous; oogonium single, subdepressed- or 
subpyriform-globose, pore median, rimiform and narrow; oospore 
depressed- or subdepressed-globose, not filling oogonium, spore wall 
smooth; vegetative cell 12-14X56-96u; oogonium 37-389X3445y; 
oospore 33-38 X 28-32u. 
England, France, Germany. 
218a. Var. mentiens Hirn. 
(Pl. XI, fig. 111.) 
1900; p: 287, PILL fies 1: 
Smaller; oogonium depressed- to pyriform-globose; oospore some- 
times nearly globose; vegetative cell 9-1137—-90u; oogonium 28-32 
33-45; oospore 27—29 XK 25-28. 
France. 
The species is to be compared with Oe. sociale (No. 6), Oe. 
rufescens (No. 4), and Oe. laeve (No. 1). Var. mentiens is smaller. 
