Mold.................plume extrudes through the wrapper. From another place...
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Bloom: Also known as plume (both terms are correct), bloom is a naturally occurring phenomenon, a grayish or whitish fuzz that can appear on a well-aged cigar.
It is not mold and is completely harmless. Bloom is a residue from the fermenting oils within the cigar and is indicative of proper storage conditions.
It first appears on the surface of a cigar as tiny crystals and can eventually make the cigar look dusty.
A more advanced bloom gives an opaque white look to the entire cigar.