Editing Sporangium (section)

===Eusporangia and leptosporangia===
Categorized based on developmental sequence, '''''eusporangia''''' and '''''leptosporangia''''' are differentiated in the vascular plants.
* In a leptosporangium, found only in leptosporangiate ferns, development involves a single initial cell that becomes the stalk, wall, and spores within the sporangium. There are around 64 spores in a leptosporangium.
[[File:Fern sporangia.jpg|thumb|200px|alt=refer to caption|[[Scanning electron micrograph]] of fern leptosporangia]]
* In a eusporangium, characteristic of all other vascular plants and some primitive ferns, the initials are in a layer (i.e., more than one). A eusporangium is larger (hence contain more spores), and its wall is multi-layered. Although the wall may be stretched and damaged, resulting in only one cell-layer remaining.