This conglomeration of shapes and colors is a cluster of sporangia – known as a sorus – of a fern. A sporangium is where a fern produces the spores that allow it to reproduce. Get a closer view of the ...

1. In the microsporangia the sporogenous cells develop from hypodermal masses, 4 in number, in the usual fashion. 2. At maturity the innermost parietal layer appears crushed by the large tapetal cells ...

An explosive launch will eventually help them disperse their contents. They are the sporangia of fern plants, found on the underside of their leaves, or fronds. These sporangia grow in clusters ...