A sorus (pl.: sori) is a cluster of sporangia (structures producing and containing spores) in ferns and fungi. A coenosorus (pl.: coenosori) is a compound sorus composed of multiple, fused sori. This Neo-Latin word is from Ancient Greek σωρός (sōrós 'stack, pile, heap'). In lichens and other fungi, the sorus is surrounded by an external layer.

Sorus, in botany, brownish or yellowish cluster of spore-producing structures (sporangia) usually located on the lower surface of fern leaves. A sorus may be protected during development by a scale or flap of tissue called an indusium.

The meaning of SORUS is a cluster of plant reproductive bodies.

Sori (singular: sorus) are groups of sporangia (singular: sporangium), which contain spores. Sori are usually found on the underside of the blade. Young sori are commonly covered by flaps of protective tissue called indusia (singular: indusium). See the following graphic.

2025年1月8日 · Fern - Spore, Sorus, Reproduction: Sori are complex aggregations of sporangia. The indusium protects the sporangial cluster. About one-third of fern species have paraphyses. The chromosome base numbers range from approximately 20 to 70. Ferns overall have relatively high levels of polyploidy, but these are all of relatively recent origin.

A sorus (plural, sori) is a cluster of sporangia, often protected by an umbrella-like structure called the indusium as the spores mature. Each sporangium is lined by an inflated strip of cells called an annulus .

Sorus definition: A cluster of spore cases, esp. the ones on the undersurface of a fern frond.

In Botany, Sorus, (sori in plural), is a yellow-brown cluster of structures that produce spores (sporangia). It is found usually on the lower surface of the leaves of ferns. Sorus is sometimes surrounded by a secondary external layer in some varieties of fungi and lichens.

Define sorus. sorus synonyms, sorus pronunciation, sorus translation, English dictionary definition of sorus. n. pl. so·ri 1. A cluster of sporangia borne on the underside of a fern frond. Also called fruit dot . 2. A reproductive structure in certain fungi and...

Sorus is a group of sporangia produced on the abaxial surface of the sporophylls in ferns. In some plants, sori may be circular, linear, or reniform. The location of sori may be slightly away from the margin on the frond lamina.