from The American Heritage® Dictionary of the English Language, 4th Edition
- n. The outermost layer of a spore in some algae and fungi.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. The outer layer of a spore, especially in some algae and fungi
from the GNU version of the Collaborative International Dictionary of English
- n. The extreme outer wall of a spore; the epispore.
from The Century Dictionary and Cyclopedia
- n. The outer coat of a spore, corresponding to the extine of pollen-grains: same as epispore.
- n. An outer coat of dried protoplasm adhering to the surface of a spore, as to the resting-spores of Peronospora and Mucor.
Sorry, no etymologies found.
The exospore often bears spines or warts, or is variously sculptured, and the character of the markings is often of value for the distinction of genera or higher groups.
a double wall, a thin delicate wall of unaltered cellulose, the endospore or intine, and a tough outer cuticularized exospore or extine.