Where does “madresilba” come from?

madresilba (Tagalog) comes from Spanish madreselva, from Spanish selva, from Old Spanish selva, from Latin silva, from Proto-Indo-European sēl- — to calm, quiet, be favourable.

madresilba (Tagalog): Japanese honeysuckle (Lonicera japonica)

Definitions

Japanese honeysuckle (Lonicera japonica)

Ancestry of “madresilba”, step by step

Step	Language	Word	Meaning
1	Spanish	madreselva	honeysuckle, woodbine
2	Spanish	selva	forest or jungle, wood, chiefly a rainforest
3	Old Spanish	selva	forest
4	Latin	silva	wood, forest; orchard, grove
5	Proto-Indo-European	sēl-	to calm, quiet, be favourable

Every word from Proto-Indo-European sēl- →Every word from Latin silva →Every word from Old Spanish selva →