Re: Euphorbia-- Perennial vs. woody vs. shrub


IMO, FWIW, they are herbaceous perennials.  True, the stems of E. characias
(and I assume its subsp. wulfenii) do get sort of woody at the very base,
but not like true woody sub-shrubs like rosemary and lavender.  Have not
done any chemical analysis - just observation.

E. martinii is a hybrid between E. amygdaloides and E. characias (according
to Clausen & Ekstrom), so would, I assume, be the same.  I think I have
one, but it's new and I don't "know" it well, yet...bought it, but need to
check and see if it's still with me and which one of the new guys it is.  
E. amygdaloides purpurea (which I grow a lot of ) doesn't get woody at the
base like E. characias (which I also have a lot of) unless it's dying off;
living stems remain pretty flexible and soft.

As an aside, I thought I was getting E. c. wulfenii, but, it appears that
this is somewhat confused in the trade and what I ended up with (from RHS
seed and from a nursery) was actually the species, E. characias.  E. c.
wulfenii has  a green "eye" (actually gland), whereas E. c. has a black one
- all mine are black!   Interesting, tho'.  I'm quite fond of euphorbias.

Marge Talt, zone 7 Maryland
mtalt@clark.net
Editor:  Gardening in Shade
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----------
> From: Pesznecker, Sue <SPesznec@lhs.org>
> Date: Monday, August 03, 1998 3:55 PM
> 
> 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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