G@DOGONIACER. 177 
Sizz. Cells :02--025 mm. 23-44 times as long; oogonia 
046-05 x ‘07-1 mm. ; androspore cell -016--02 x °02-:025 
mm.; stem of dwarf males ‘017-019 x ‘029-031 mm.; sperm. 
cell 01-011 x -0075-:008 mm, 
Wittr. Mon. Cidog. p. 55. Kirch. Alg. Schles. p. 62. 
Rabh, Alg. Eur. iii. 360. 
ene Pringsheimiana Arch. Proc, Dubl. Micro. Club p. 
, t. 4, 
Treland. 
Plate LXVIL, fig, 4. Bulbochete insignis, with oogonium and dwarf 
male x 400, 
Bulbochete rectangularis. tir. Disp. Edog. p. 142. 
Oogonia ellipsoid, patent, or rarely erect, seated beneath 
terminal sete, 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, 
Sizz. Cells :019-023 mm., 14-2 times as long; oogonia, 
*08--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 -008-0095 x :0055--0065 mm. 
Witty. Mon. Cidog. p. 56, t. 1, f. 22-24, 
Treland. 
Plate LXVIII. fig. 8. Bulbochete rectangularis, with oogonia and 
dwarf male x 400. 
Species of which the organs of fructification are imperfectly 
known. 
Bulbochete gracilis. Pvings. Beitr. 74, t. 6, f. 9. 
Moneecious (?). Oogonia oblong-ellipsoid, patent or rarely 
erect, with vegetative cells above ; supporting cells without 
dissepiment (?). 
Size. Cells (013-014 mm., 14 to 14 times as long ; oogonia 
021-024 x °049-'054 mm. 
Wittr. Mon. Ciidog. p. 57. Rabh. Alg. Eur. iii., 359. Quart. 
Journ. Micr. Sci. 1870, p. 89. 
Ireland. 
Plate LXVI, fig. 9. Bulbochete gracilis, with oogonium x 400. 
