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Re: self heading Philodendron ID

  • Subject: Re: self heading Philodendron ID
  • From: brian lee <lbmkjm@yahoo.com>
  • Date: Mon, 7 Jan 2008 09:41:13 -0800 (PST)

Dear John and Eric, et. al.,

Aloha and thank you for sending over the Exotica
photos for us to review.

Exotica is a very helpful photobook that illustrates
plants and identifications assembled by Graf.  These
identifications are often incorrect and have little
botanical standing, but this book is often the only
clue to plants out there in the horticulture world. 
Regarding the so-called Philodendron eichleri and its
hybrid with Philodendron undulatum...superficially one
could match several plants favorably from these
photos.  It is a good starting point and the curious
can go forth and match the scientific literature with
this and other evidence.

Those aroiders and lurkers out there that want more
information about this self-header and other
Philodendron in the subgenus Meconostigma should refer
to Aroidiana, Vol. 25...that Julius recommended in an
earlier thread.  That article is a good reference with
a revised key to the subgenus.  It shows good photos
of the intravaginal squamulae that is such a good
character in understanding this group....some have
them then lose them, or they are persistent.  Of
course when identifying plants we use a suite of
characters, so the use of only one character is not
diagnostic in most cases....especially in variable or
polymorphic species.

Aloha,

Leland
--- criswick <criswick@spiceisle.com> wrote:

> Dear All,
> 
>  
> 
>           Here are the illustrations from Exotica. 
> P. eichleri is presented
> as a species, while it's supposed hybrid with P.
> undulatum is at right.
> 
>  
> 
>  
> John.
> 
>  
> 
> -----Original Message-----
> From: aroid-l-bounces@gizmoworks.com
> [mailto:aroid-l-bounces@gizmoworks.com]
> On Behalf Of brian lee
> Sent: Saturday, January 05, 2008 3:00 PM
> To: Discussion of aroids
> Subject: Re: [Aroid-l] self heading Philodendron ID
> 
>  
> 
> Dear Eric,
> 
>  
> 
> Aloha.  I agree with Julius on all counts.
> 
>  
> 
> Philodendron undulatum is very distinctive with
> 
> numerous, persistent, needle-like , half inch to
> three
> 
> quarter inch, intravaginal squamules on the stem. 
> It
> 
> is very different from the plant I know as P.
> 
> eichleri.
> 
>  
> 
> Literature on Philodendron eichleri is as follows:  
> 
>  
> 
> P. eicheri in Bot. Jahrb. 26 : 556 (1899); Krause in
> 
> Engler, Das Pflanzenreich 60 (IV. 23Db): 133 (1913).
> 
> Types: Brazil, Minas Gerais state, Carandai, cult.
> 
> Brazil, 15 Nov. 1887 at Quinta da Boa Vista, Rio de
> 
> Janeiro as no. 67, Glaziou 16503 (infl.,B!
> 
> syn.;sterile, P! isosyn.), Glaziou 17332, (sterile,
> B
> 
> syn. not seen; C! K! P! isosyn.).  
> 
>  
> 
> If someone in virtual world has access to the
> original
> 
> description in Das Pflanzenreich to scan and
> 
> share...all of us can compare our plants and decide
> 
> what that taxon / hybrid is, within the confines of
> 
> the original intent.  I have seen plants of
> 
> Philodendron labeled as eichleri...it is a massive
> 
> plant that has affinities to Philodendron speciosum.
> 
> 
> The spathes are green with pink edges, and the stem
> 
> has light colored petiole scars...off hand I could
> not
> 
> tell you the nature of the intravaginal
> 
> squamules...but I can check in the next few
> 
> days....there is a large clump about a mile from me.
> 
> 
> However, until I can compare the original
> description
> 
> and translate the German...it is impossible for me
> to
> 
> tell why Simon Mayo considered this a synonym of
> 
> Philodendron undulatum....perhaps what we consider
> 
> Philodendron eichleri is faulty or perhaps the
> 
> original description is vague and the type specimens
> 
> compare favorably with P. undulatum.  Questions.
> 
>  
> 
> Aloha,
> 
>  
> 
> Leland
> 
> --- ju-bo@msn.com wrote:
> 
>  
> 
> > 
> 
> > 
> 
> > 
> 
> > ----------------------------------------
> 
> > > Date: Fri, 4 Jan 2008 15:07:46 -0800
> 
> > > From: leu242@yahoo.com
> 
> > > To: aroid-l@gizmoworks.com
> 
> > > Subject: Re: [Aroid-l] self heading Philodendron
> 
> > ID
> 
> >  
> 
> > Dear Eric,
> 
> > 
> 
> > Thanks, please keep us informed as to any cold
> 
> > damage.
> 
> > First off, Abrimaal`s opinion is that this large
> 
> > plant is either P. xanadu or P. pinnatifidium, but
> 
> > it is deff. not either of these two species---P.
> 
> > xanadu is a substantially smaller plant with MANY
> 
> > differences, and P. pinnatifidium is NOT a
> 
> > Meconostigma and is a tropical species with many
> 
> > differences and so would not survive the cold
> where
> 
> > this plant is growing.
> 
> > (When in doubt, read the instructions! :--)!!
> 
> > In the most recent key to the plants in the
> 
> > Philodendron subgenus Meconostigma,  in Aroideana
> 
> > Vol. 25 of 2002, Dr. Eduardo Goncalves lists 19
> 
> > ''good'' species in this subgenus, and P.
> eichlerii
> 
> > is not listed as one of them.   I have seen a
> 
> > photograph of a plant that is pretty much a
> perfect
> 
> > match for Eric`s pic. in an old Exotica labeled as
> 
> > P. eichlerii, next to it or at least on the same
> 
> > page was P. X evansii.
> 
> > I will continue to ask around, but I am pretty
> 
> > certain that P. eichlerii is one of the old
> hybrids.
> 
> >  
> 
> > I am familiar w/ P. undulatum, and this photo of
> 
> 
=== message truncated ===>
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