from The American Heritage® Dictionary of the English Language, 5th Edition.
- noun A leaf or leaflike organ that bears one or more sporangia.
from Wiktionary, Creative Commons Attribution/Share-Alike License.
- noun botany The equivalent to a
leaf, in fernsand mosses, that bears the sporangia
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- noun 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.