Where does “Siberian pea-tree” come from?

Siberian pea-tree (English) comes from English pea, from English pease, from Middle English pese, from Old English pise, from Late Latin pisa, from Latin pīsum, from Ancient Greek πίσον, from Ancient Greek πίσος — pea, pease, seed of "Pisum sativum".

Siberian pea-tree (English): A species of legume, Caragana arborescens native to Siberia, parts of China and neighboring Mongolia and Kazakhstan

Definitions

  1. A species of legume, Caragana arborescens native to Siberia, parts of China and neighboring Mongolia and Kazakhstan

Ancestry of “Siberian pea-tree”, step by step

Siberian pea-tree traces back through 3 separate lines of ancestry.

via English pea

StepLanguageWordMeaning
1EnglishpeaAny of certain plants of the family Fabaceae: Pisum sativum and others
2EnglishpeaseTo make peace between (conflicting people, states etc.); to reconcile
3Middle EnglishpeseA pea; The leguminous plant Pisum sativum;...
4Old Englishpisepea
5Late Latinpisanominative plural of pisum; accusative plural of...
6Latinpīsumpea, pease
7Ancient GreekπίσονQuoted by comic poet Alexis; pea, pease, seed of...
8Ancient Greekπίσοςpea, pease, seed of "Pisum sativum"

via English Siberian

StepLanguageWordMeaning
1EnglishSiberianFrom, of or pertaining to Siberia; A person from...
2EnglishSiberiaA cold, inhospitable place or place of exile
3LatinSiberia
4Latin-iaUsed to form a feminine abstract noun, usually...
5Latin-iusforming adjectives from nouns; nominative neuter...
6Proto-Italic-jōsForms comparative adjectives
7Proto-Indo-European-yósCreates adjectives from noun or verb stems

via English tree

StepLanguageWordMeaning
1EnglishtreeA perennial woody plant, not exactly defined, but...
2Middle EnglishtreA tree or a plant that resembles one
Every word from Ancient Greek πίσος