- Botany. one of the clusters of sporangia on the back of the fronds of ferns.
- Mycology. a soruslike spore mass of certain fungi and lichens.
Origin of sorus
Examples from the Web for sorus
Historical Examples of sorus
The indusium arises from a vein to which the sorus is attached.
The sorus is circular and is covered with an indusium which is notched or kidney-shaped.
The proper (often shield-shaped) covering of the sorus or fruit-dot in Ferns.
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.
- a cluster of sporangia on the undersurface of certain fern leaves
- any of various similar spore-producing structures in some lichens and fungi
Word Origin for sorus
- A cluster of sporangia borne on the underside of a fern frond. A sorus is sometimes covered by an indusium. Also called fruitdot
- A reproductive structure consisting of masses of spores, characteristic of certain fungi such as rusts and smuts.