from The American Heritage® Dictionary of the English Language, 4th Edition
- n. A cluster of sporangia borne on the underside of a fern frond.
- n. A reproductive structure in certain fungi and lichens.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. Any reproductive structure, in some lichens and fungi that produces spores
- n. A cluster of sporangia on the edge or underside of a fern frond
from the GNU version of the Collaborative International Dictionary of English
- n. One of the fruit dots, or small clusters of sporangia, on the back of the fronds of ferns.
- n. In parasitic fungi, any mass of spores bursting through the epidermis of a host plant.
- n. In lichens, a heap of soredia on the thallus.
from The Century Dictionary and Cyclopedia
- n. In botany, a heap or aggregation.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. cluster of sporangia usually on underside of a fern frond
- n. a spore-producing structure in certain lichens and fungi
Indusium cup-shaped, fixed beneath the sorus, supported by the tooth of a leaf; sporangia borne in an elevated, globular receptacle open at the top.
Indusium minute, concealed beneath the sorus, divided into a few beaded hairs.
Sori (singular _sorus_, a heap), or fruit dots may be naked as in the polypody, but are usually covered with a thin, delicate membrane, known as the indusium (Greek, a dress, or mantle).
Indusium hood-shaped, fixed centrally behind the sorus and arching over it, soon withering, often illusive.
Indusium star-shaped, of a few irregular segments fixed beneath the sorus, often obscure.
This occasionally happens from the elongation of the normally placed sorus, which thus extends to the margin, and returns on the upper side, when the sori chance to be placed opposite to the marginal crenatures.
Like the plasmodial slime mold, the pseudoplasmodium looks for a light, dry area to form the frutification, which is called a sorocarp and consists of a sorophore (the stalk) and a sorus
Like the plasmodial slime mold, the pseudoplasmodium looks for a light, dry are to form the frutification, which is called a sorocarp and consists of a sorophore (the stalk) and a sorus
Sori sunt continui ut in Pteride, pro qua facile habetur, sed character yidianti: sorus nempe indusio insertus, non aegre deprehenditur.