Where does “hypsophyll” come from?

hypsophyll (English) comes from English -phyll, from Ancient Greek φύλλον, from Proto-Indo-European bʰolh₃-yom, from Proto-Indo-European bʰleh₃-, from Proto-Indo-European bʰel-, from Proto-Indo-European bʰōl-.

hypsophyll (English): A bract or bracteole; Any of the flower parts...

Definitions

A bract or bracteole; Any of the flower parts...

Ancestry of “hypsophyll”, step by step

Step	Language	Word	Meaning
1	English	-phyll	leaf
2	Ancient Greek	φύλλον	leaf; foliage; plant
3	Proto-Indo-European	bʰolh₃-yom	—
4	Proto-Indo-European	bʰleh₃-	bloom, flower
5	Proto-Indo-European	bʰel-	to sound; to speak, roar, bark; shiny, white; to...
6	Proto-Indo-European	bʰōl-	—

Every word from Proto-Indo-European bʰōl- →Every word from Proto-Indo-European bʰel- →Every word from Proto-Indo-European bʰleh₃- →