OEDOGONIUM Let 
233. Oe. crenulatum Wittrock. 
(Pl. LVI, figs. 532 and 533.) 
1876, p. 49, Pl. 18, figs. 25-27; Hirn 1900, p. 309, Pl. XLVII, fig. 294. 
Oogonium 1, broadly pyriform-globose or transversely ellipsoid, 
medianly plicate, with about 13 longitudinal ridges, operculate, division 
median, narrow but distinct; oospore depressed-globose, inflating 
oogonium, spore wall smooth; vegetative cell 6-8 X30—55u; oogonium 
25-27 X 26-28; oospore 22-23 X 15-17. 
Italy. 
233a. Var. gracilius (Nordstedt) Hirn. 
(Pl. LVI, fig. 534.) 
1900, p. 309, Pl. XLVII, fig. 295; Oe. crenulatum Wittr. f. gracilior Nordst. 
1888, p. 12. 
Smaller; vegetative cell 4-5x 1340p; oogonium 16-18 X 16-21; 
oospore 15-16 X 12-138u. 
New Zealand. 
Cf. Oe. plicatulum (No. 229), from which it is distinguished 
by its median position of the operculum. 
234. Oc. saxatile Hansgirg. 
1901, p. 1; Hirn 1906, p. 20. 
In 1888 Hansgirg described Oe. rufescens var. saxatile as 
having an orange-red color and with these dimensions: vege- 
tative cell 7—-9(-12) X15—70u; oogonium 18-24 24-36u. MHirn 
(1900) considered this as a synonym of Oe. rufescens (No. 4). 
In 1901 Hansgirg, apparently feeling the variety to be distinct, 
gave it specific rank as Oe. saxatile, adding nothing to its descrip- 
tion. It was found in several localities in Austria in a vegetative 
state on moist rock. Oe. saxatile may be distinct, but its 
description is at present too incomplete to warrant its retention 
as a distinct species, except as a matter of record. Vegetative 
cells red in color have been noted in a very few species of 
Bulbochaete, e. g., B. sanguinea (No. 50). 
235. Oe. reticulatum West and West. 
1902, p. 129; Hirn 1906, p. 19. 
Vegetative cell elongate; oogonium ovoid-globose; oospore globose, 
not filling oogonium, spore wall areolate; vegetative cell 7-8 X62-100y; 
oogonium 37 X41; oospore 25 X 25u. 
Ceylon. 
To be compared with Oe. arcyosporum (No. 58) and Oe. 
areolatum (No. 59). 
