168 LAE (OED OGONTACEAE 
distinctly clavate, 6-12 (-20) X6—50u; oogonium 28-26 X 28y; oospore 
26 X 24-26; basal cell 20-24 X 12-16u. 
Bermuda. 
Characterized by its frequently short and clavate vegetative 
cells and depressed-globose basal cells. Its general appearance 
is near that of Oe. vesicatum (No. 205), Oe. montagne (No. 206), 
and Oe. pluviale (No. 183). Its resemblance to Oe. inversum 
(No. 77), noted by Collins and Hervey, seems to the writer 
quite far-fetched. The so-called ‘‘stellate clusters’’ of young 
plants may be merely the development of numerous zoospores 
accidentally lodged in one mass. 
223. Oe. lageniforme Hirn. 
(Pl. XX, fig. 187.) 
1900, p. 291, Pl. XIII, fig. 68. 
(?) Dioecious, macrandrous; oogonium 1, obpyriform (in section 
sometimes trinodulose), pore superior; oospore globose to ellipsoid, 
occupying the lower part of the oogonium, spore wall smooth; vegetative 
cell 11-13 45-90u; oogonium 33-36 X48-63u; oospore 29-31 31-38y. 
Brazil. 
In spite of the incomplete description this species is readily 
recognized by its inferiorly inflated oogonium and its relatively 
smaller oospore. It bears some resemblance to the monoecious 
Oe. pseudoboscit (No. 27). 
224. Oc. poecilosporum Nordstedt and Hirn. 
(Pl. XXXIV, fig. 305.) 
In Hirn 1900, p. 298, Pl. XXIII, fig. 124. 
Oogonium 1-2, ellipsoid to depressed-globose (sometimes globose 
or subglobose), operculate, division median, broad; oospore of same 
form as oogonium, which it nearly fills, spore wall smooth; terminal cell 
apically obtuse; vegetative cell 6-8 X 20-47; oogonium 24-28 X 25-38y; 
oospore 23-26 X 21—-28y. 
Africa. 
Compare with Oe. gunnii (No. 101) and Oe. psaegmatosporum 
(No. 83). 
225. Oe. inflatum Hallas. 
(Pt. XXI, figs. 193 and 194.) 
1905, p. 408, fig. 16; Hirn 1906, p. 16, Pl. I, fig. 1. 
(?) Dioecious; oogonium 1—2, often terminal, subglobose or ellipsoid- 
globose, poriferous, pore variable between supramedian and nearly 
