284 



METHODS IN PLANT HISTOLOGY 



spores, and a stain which shows the spores well will be too faint for the 

 mother-cells. It is better to stain some preparations for one feature 

 and others for another. It is not worth while to steer a median course. 



© 



D 



B 



Fig. 84. — Anthoceros laevis: .4, diagram of a longitudinal section of the sporophyte. X5. B, C, 

 and Z), cross-sections at these three levels. £, early sporogenous cell (shaded) near the foot; F, spore 

 mother-cells at the level shown in C. G, ripe spores at the level shown in D. E, F, and G X150. 

 From Chamberlain's Elements of Plant Science (McGraw-Hill Book Co., New York). 



