CEDOGONIACE. 161 
(sometimes rather hexagonally globose), opening by a pore a 
little above the middle; oospores globose, not filling the 
oogonia; androsporangia 1-9 celled; dwarf males a little 
curved, seated on the supporting cell; spermogonia 1 (or 2 ?) 
celled. : 
Size. Cells -018-:021 mm. by 43 to 6 times as long; 
oogonia °049--052 x ‘051-060 mm.; oospore ‘045-049 x 
045-049 mm.; androsp. cell ‘017-02 x ‘008-018 mm.; 
sperm. cells ‘009-01 x -015-:02 mm. 
Wittr. Mon, Cidog. p. 21, t. 1, f. 12-14. 
Vesiculifera flavescens, Hass. F. W. Alg. 206, t. 53, f. 9. 
Plate LX. fig. 2. Cdogonium flavescens with single and twin 
oogonia; @, androsporangia x 400. 
Gidogonium Braunii. Kutz. Sp. Alg. p. 366. 
Gynandrosporous. Oogonia single, ellipsoid, globose, open- 
ing with a pore at the middle; oospores globose, not filling 
the oogonia ; androsporangia 1-2 celled; dwarf males a little 
curved, seated about the oogonium, often on the supporting 
cells ; spermogonia 1-celled. 
Size. Cells -013--015 mm., 2-4 times as long; oogonia, 
08-°033 x 033-036 mm.; oospore *027--029 x -027--029 mm.; 
androsp. cell :014--015 x 011-012 mm.; sperm. cell ‘005 x 
009 mm, 
Prings. Beitr. p. 70, t. 5, £6. Wittr. Mon. Cidog. p. 22. 
Kirch. Alg. Schles. p. 55. Archer in Quart. Journ. Mier. 
Sci. 1866, p. 69. Rabh, Alg. Eur. iii. 349. 
Britain, Ireland. 
Plate LX fig. 3. Gdogonium Braunii with oogonia,.oospores, and 
dwarf males x 400. 
Gidogonium macrandum. Wittr. Disp. Cdog. 130, t. 1, f. 3-5. 
Oogonia single or twin (rarely three), obversely egg-shaped 
or globosely egg-shaped, opening by an operculum, with a very 
narrow fissure ; oospores globose or egg-shaped globose, not 
filling the oogonia; terminal cell very shortly apiculate; dwarf 
males very much curved, seated on the oogonia (stem some- 
times 2-38 celled) ; spermogonia many (to 7) celled. 
Size. Cells -015--016 mm., 3-5 times as long; oogonia 
036-04 x 043-'054 mm. ; oospore ‘031-034 x -033-"039 mm. ; 
sperm. cell ‘009 mm. 
Wittr. Mon. CGidog. p. 24: Archer Quart. Journ, Mier. Sci. 
1875, xv., p. 413. 
Ireland, Britain. 
Plate LX. fig. 4. Edogonium macrandum with oogonia and dwarf 
males x 400, Fig. 4. a, dwarf males seated upon the oogonium—after 
Wittrock. 
