PLATE 3 
A. — Tripsacum laxum Nash. Heterotypic prophase, showing 36 chromosomes, 
2 of which are probably univalent. 
B. —Tripsacum laxum Nash. Heterotypic anaphase, having the division of 
both bivalent and the smaller lagging probably univalent chromosomes. 
C and D.— Tripsacum dactyloides L. Heterotypic prophase showing 35 biva¬ 
lent chromosomes. 
E. — Tripsacum dactyloides L. Heterotypic anaphase, showing regular distribu¬ 
tion of the chromosomes. 
F. — Tripsacum dactyloides L. Homotypic anaphase. 
G. -— Tripsacum pilosum Scribn. & Merr. Heterotypic anaphase, showing 3 
lagging chromosomes. 
H. — Tripsacum lanceolatum Rupr. Homotypic anaphase, showing many 
chromosomes lagging on the spindle. 
I. — Tripsacum lanceolatum Rupr. Homotypic telaphase, showing extruded 
chromatin material in the cytoplasm. 
