Re: Monstera obliqua vs. M. adansonii


Dear Karen,

   The differences are not so obvious, considering there are three different 
things under the name M. adansonii (called "varieties" by Michael Madison). 
Anyway, let´s try to take the easiest way.

General aspect: Monstera obliqua is a slender plant, loosely attached to the 
host three. Monstera adansonii can be quite robust, mainly in the variety 
klotzschiana, and it is usually closely attached.

Inflorescence: Monstera obliqua usually has a small spadix, no more than 10 
mm thick. Monstera adansonii will have a spadix that may be between 1,1-2,6 
mm thick. Basal flowers are sterile in Monstera adansonii, whereas they are 
completely fertile in M. obliqua. In time: Monstera obliqua has a dull 
yellow spathe, whereas it is cream or pale yellow in M. adansonii.

Infructescence: Berries of M. adansonii have a hard cap (stylar portion with 
trichosclereids) that abscises when the berries are ripe. So unripe berries 
are prismatic and seems somewhat hardened. The berries in Monstera obliqua 
are globose, does not have the hard cap, so it is softer.

     Well, in theory these are the differences. There is a new species in 
Brazil (to be described) that is somewhat intermediate, and it is widely 
distributed. Anyway, I hope you were not lucky enough to have one of this in 
your way.

                        Very best wishes,

                                 Eduardo.



>Hello:
>
>After lurking on this list for at least five years, and enjoying the
>opportunity to soak up all of this aroid knowledge, I have finally worked 
>up
>the nerve to ask a question.
>
>What is the difference between Monstera obliqua and Monstera adansonii?
>Obviously, they are two different species.  What I need to know is if I had 
>a
>specimen of each of them in front of me, how would I tell the difference?
>
>Karen




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