PLATE XXXIX 
TYPHA LATIFOLIA 
1, Sterile seed, showing large size of pericarp. 2, Fertile seed. (The pericarp fits closely 
over the kernel.) 3, Seed, or kernel, removed from pericarp. 4, Embryo protruding through 
pericarp. 5, Same as 4, with pericarp removed. 6, Growing embryo as it appears when 
removed from seed. 7, Embryo pushing open cap of seed. 8, Beginning of formation of 
root. (The arrow indicates the developing leaf.) 9, Further development of young plant. 
(The leaf has protruded and root hairs have developed on the root.) 10, Young plant with 
three leaves and three roots, showing disintegration of tip of first leaf, whereby it frees itself 
from the seed 
510 
