![](http://www.alamy.com/thumbs/6/A6B5CA58-CD63-4A21-BF39-BB5D8728D22F/2TBJ5J8.jpg)
Sorus with sporangia of fern Aspidium sp. Optical microscope X100.
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Photo credit: © José María Barres Manuel / Alamy / Afripics
License: Royalty Free
Model Released: No
Keywords: asexual, aspidium, botany, fern, micrograph, microphotography, microscope, optical, pteridophyta, reproduction, sori, sorus, sporangia, sporangium, spores