from The American Heritage® Dictionary of the English Language, 4th Edition
- n. A leaf or leaflike organ that bears spores.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. The equivalent to a leaf, in ferns and mosses, that bears the sporangia
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. leaf in ferns and mosses that bears the sporangia
Sorry, no etymologies found.
The macrosporangia (ovules) are borne on similar leaves, known as carpels, and, like the pollen sacs, borne in pairs, but on the upper side of the sporophyll instead of the lower.