Euphorbia-- Perennial vs. woody vs. shrub


Where would euphorbia (as in e. martinii, e. wulfenii) fit in re:
perennial (herbaceous vs. woody) or shrub??

Sue P.

SPesznec@lhs.org          Portland, Oregon
(USDA zone 8, Sunset zone 6)



>      
>   Woody plants are defined as species that have some plant portion
> that 
>   will lignify -- that is, "become wood or woody by chemical and
> physical 
>   changes in the cell walls that convert some or all of the
> constituents 
>   into lignin or lignocellulose."  This generally covers trees,
> shrubs, and 
>   vines.
>      
> Perennials are plants that come back year after year, although the
> scope 
> of this list is non-woody perennials (herbaceous).
>      
> So, shrubs are a subset of woody plants which are a subset of
> perennials..
>      
> 

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