Species of legume
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Sophora cassioides is a legume tree endemic to central and southern Chile. It is one of the two species of "Sophora" endemic to continental Chile along with "Sophora macrocarpa" (other species are endemic to insular Chile).
Distribution.
It is an endemic from South Chile and Gough Island. In South America it is found between Constitución and Puyuhuapi. It prefers shady places in Myrtaceae stands, alongside "Drimys", "Caldcluvia", and other hygrophyllous species. Putative hybrids with "Sophora macrocarpa" have been described at Bullileo (Linares). It is also found in coastal areas associated with the "Peumus boldus"–"Persea lingue" alliance.
Phylogeny.
"Sophora" represents a polyphyletic assemblage. Series Tetrapterae ("sensu" Tsoong &amp; Ma), including "Sophora cassioides" and "Sophora macrocarpa", forms a monophyletic group with Eurasian species like as "Sophora flavescens" and Asian "Sophora alopecuroides" , suggesting a west or northwest Pacific origin. The genus "Sophora" is estimated to have arrived in New Zealand 9.6–8.9 million years ago (in the Neogene).
Notes and references.
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