(EDOGON1ACE.E. 177 



SIZE. Cells '02-'025 mm. 2J-41 times as long ; oogonia 

 046--05 x -07--1 mm. ; androspore cell -016--02 x '02--025 

 mm. ; stem of dwarf males -017-'0l9 X '029--031 mm. ; sperm, 

 cell -01--011 x -0075--008 mm. 



Wittr. Mon. (Edog. p. 55. Kirch. Alg. Schles. p. 62. 



Kabh. Alg. Eur. iii. 360. 



Bulbochcete Pringsheimiana Arch. Proc. Dubl. Micro. Club p. 

 38, t. 4. 



Ireland. 



Plate IjXVII. fig, 4. Bulbockcete insignis, with oogonium and dwarf 

 male x 400. 



Bulbochcete rectangularis. Wittr. Disp. (Edog. p. 142. 



Oogonia ellipsoid, patent, or rarely erect, seated beneath 

 terminal seta3, or androsporangia, or rarely beneath vegetative 

 cells; androsporangia scattered or epigynous ; vegetative cells 

 somewhat rectangular in longitudinal section (horizontal divi- 

 sion of vegetative cells often occurs). Branches of the plant 

 few and very long ; dwarf males seated about or upon the 

 oogonia. 



SIZE. Cells -019--023 mm., 1J-2 times as long; oogonia, 

 03--039 x -048--055 mm. ; androspore cell -015--016 x -016--027 

 mm.; stem of dwarf males -015--018 X '022--027 mm. ; sperm, 

 cell -OOS--0095 x -0055--0065 mm. 



Wittr. Mon. (Edog. p. 56, t. 1, f. 22-24 9 



Ireland. 



Plate LXVI1I. fig. 3. Bulboclicete rectangularis, with oogonia and 

 dwarf male x 400. 



Species of which the organs of fructification are imperfectly 



known. 



Bulbochcete gracilis. Prings. Beitr. 74, t. 6, /. 9. 



Monoecious (?). Oogonia oblong-ellipsoid, patent or rarely 

 erect, with vegetative cells above ; supporting cells without 

 dissepiment (?). 



SIZE. Cells 013-'014mm., l^ to 1J times as long ; oogonia 

 021--024 x '049--054 mm. 



Wittr. Mon. (Edog. p. 57. Rabh. Alg. Eur. iii., 359. Quart. 

 Journ. Micr. Sci. 1870, p. 89. 



Ireland. 

 Plate LXVI. fig. 9. BuWochoete gracilis, with oogonium x 400. 



