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Find Sorus stock images in HD and millions of other royalty-free stock photos, illustrations and vectors in the Shutterstock collection. Thousands of new, high-quality pictures added every day.

Each circular brown structure is an individual sorus. 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.

DIAGRAM a leaf in cross section (indicate the abaxial side); DRAW a sector that includes a sorus. Choose a slide that shows a good medial section through the stalk of the indusium. 1. Look closely at a fertile leaf of one of the Cyrtomium plants in the lab (Fig. 16). The sori are abaxial in several rows on the

Sep 24, 2010 · Sorus. Each sorus is a cluster of sporangia. The shape and position of the sori are important for identification of ferns. They provide the main features for identifying the different genera. Sori can be round, oval, oblong or considerably elongated. They may occur on the edge of the pinna or away from the edge.

Obtain a prepared slide of a sorus. A sorus 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. When the spores have matured, the cells in the annulus begin to dry out, causing the cells to collapse and pull ...

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Mar 29, 2015 · Each sorus is a cluster of sporangia. The shape and position of the sori are important for identification of ferns. They provide the main features for identifying the different genera. Sori can be round, oval, oblong or considerably elongated. They may occur on the edge of the pinna or away from the edge.

sorus Cluster of small spore-producing structures covering the underside of a pinna.

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