Where does “lactescens” come from?

lactescens (Latin) comes from Latin lactesco, from Latin lác, from Proto-Indo-European ǵlákts — milk.

Ancestry of “lactescens”, step by step

Step	Language	Word	Meaning
1	Latin	lactesco	—
2	Latin	lác	—
3	Proto-Indo-European	ǵlákts	milk

lactescens — Etymology, Origin & Word History | Etymology Explorer