Where does “Birkenröhrling” come from?

Birkenröhrling (German) comes from German Röhrling, from German röhre, from Middle High German rōre, from Old High German rōra, from Old High German rōr, from Proto-Germanic rauzą, from Proto-Indo-European er- — eagle, bird; loose, light, rare, sparse; to fail,...

Ancestry of “Birkenröhrling”, step by step

Birkenröhrling traces back through two separate lines of ancestry.

via German Röhrling

StepLanguageWordMeaning
1GermanRöhrlingbolete, boletus
2Germanröhretube, duct, pipe
3Middle High Germanrōrereed, rush
4Old High Germanrōra
5Old High Germanrōrpipe
6Proto-Germanicrauząpipe, reed, shaft, tube; reed, rush
7Proto-Indo-Europeaner-eagle, bird; loose, light, rare, sparse; to fail,...

via German birke

StepLanguageWordMeaning
1Germanbirkebirch tree
2Middle High Germanbirke
3Old High Germanbirkaa birch tree
4Proto-West Germanicbirkijābirch
5Proto-Germanicbirkijǭbirch
6Proto-Indo-EuropeanbʰerHǵosbirch
Every word from Proto-Indo-European er-Every word from Proto-Germanic rauząEvery word from Old High German rōr