The exospore is 140 nm to 1.0 [micro]m thick, with a smooth
are rodlets that are continuous with the exospore dark coat (Fig.
outside to inside, of perispore, para-exospore, exospore, and endospore.
exospore with two zones was mentioned by Lugardon (1976), Pettitt
an exospore divided into two zones, which they called the outer and
inner exospore. This different interpretation could be due to the
those of the exospore with respect to both chemical composition and
The characteristics of the exospore are uniform in all of the
A strongly contrasted coat is always present on the exospore
the exospore and the para-exospore and inside the chamber over the
The continuity between the exospore and the elements of the