Where does “Kieferngewächs” come from?

Kieferngewächs (German) comes from German Kiefer, from German Kienföhre, from German Föhre, from Middle High German vorhe, from Old High German forha, from Proto-Germanic furhō, from Proto-Indo-European pérkus, from Proto-Indo-European perkʷ- — oak.

Kieferngewächs (German): any plant of the family of conifer trees or shrubs commonly known as the pine family (Pinaceae)

Definitions

any plant of the family of conifer trees or shrubs commonly known as the pine family (Pinaceae)

Ancestry of “Kieferngewächs”, step by step

Kieferngewächs traces back through two separate lines of ancestry.

via German Kiefer

Step	Language	Word	Meaning
1	German	Kiefer	pine; jaw
2	German	Kienföhre	archaic form of Kiefer
3	German	Föhre	pine
4	Middle High German	vorhe	—
5	Old High German	forha	—
6	Proto-Germanic	furhō	fir; pine; forest
7	Proto-Indo-European	pérkus	oak
8	Proto-Indo-European	perkʷ-	oak

via German Gewächs

Step	Language	Word	Meaning
1	German	Gewächs	plant
2	German	wachsen	to grow; to grow, to increase; to wax
3	Middle High German	wahsen	to grow
4	Old High German	wahsan	to grow
5	Proto-West Germanic	wahsan	to grow
6	Proto-Germanic	wahsijaną	to grow
7	Indo-European	*h₂weks-	—

Every word from Proto-Indo-European perkʷ- →