Heard spelling

infloresscence

Spelled inflorescence. a doubled consonant

Where does the doubled s come from?

From the stress. The word lands hard on that syllable, and a hard short syllable in English usually gets a doubled consonant behind it.

Blossom, possum and lesson all follow the rule. Inflorescence does not, because there is only one s in it to begin with: the sound comes from the sc pair, and doubling the s pushes the word to fourteen letters and away from its Latin.

Say

in-flor-ESS-uhnss

Letters

I-N-F-L-O-R-E-S-C-E-N-C-E