This is a freshwater algae. The "spheres" on the soil surface are each a single cell up to about 1 mm in diameter, attached to the soil by rhizoids; each sphere is an individual plant. They were growing on the cracking mud that was still moist. The species is rarely seen, mainly because it's so small.
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1,901,151 sightings of 21,162 species in 9,360 locations from 13,006 contributors CCA 3.0 | privacy
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