146 BOTANICAL GAZETTE [octoBER 
hypobasal cells (fig. 5). This agrees with the accounts for Reboulia 
as given by CAVERS (3), WoopBuRN (18), and Haupt (10), and with 
wr 4 
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(ICED 
FEDLHY KS 
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Fics. 4-18.—Fig. 4, egg with male and female nuclei, black circle representing 
oil drop; fig. 5, first wall transverse; fig. 6, first wall oblique; fig. 7, mitosis in hypo- 
basal cell; fig. 8, embryo of three cells; fig. 9, mitosis in both epibasal and hypobasal 
cells; fig. 10, typical filamentous embryo of four cells; figs. 11~13, epibasal cell divided 
by oblique wall; fig. 14, vertical division of two middle cells of row, basal and apical 
cells undivided as yet; fig. 15, apical cell not yet divided by vertical wall; fig. 16, 
epibasal cell divided by oblique wall, vertical division in middle of embryo, basal cell 
of row of four probably transversely divided; figs. 17, 18, two cells.at base probably 
resulting from transverse division of basal cell; 430. 
such forms as Targionia (CAMPBELL 1, O’KEEFE 16), Plagiochasma 
(STraRrR 17), Conocephalum (CAVERS 2), Riccia at times (GARBER 8), 
and practically all the Jungermanniales which have been examined, 
