Nepenthes taxonomy

From: Dave Evans (dpevans@rci.rutgers.edu)
Date: Sat Feb 12 2000 - 10:58:59 PST 

Date: Sat, 12 Feb 2000 13:58:59 -0500
From: "Dave Evans" <dpevans@rci.rutgers.edu>
To: cp@opus.hpl.hp.com
Message-Id: <aabcdefg432$foo@default>
Subject: Nepenthes taxonomy

Dear Dr. Jan Schlauer and Peter (of CA Carnivore's),

    I have a couple questions about some Nepenthes I have. I have a
copy of _Blumea_ Vol 42, No 1, BTW. I still have not gotten a good
idea about the differences between _N.ventricosa_ and _N.burkei._
When I read Jebb and Cheek's revision, it states, "The present
species can be distinguished by the less strongly waisted,
green-blotched purple pitchers with lib as large as mouth and with 6
or 7 pairs of nerves. In _N. ventricosa_ the pitchers are more
narrowly waisted, glossy yellowish white, with lids much smaller
than the mouth and with only 3-4 pairs of lognitubinal vein in the
leaf-blade." Could someone please explain what nerves they are
refering to? Also, I don't really see much comparison in this
paragraph. About the only difference made appearent was that
ventricosa has much smaller lids on the pitchers. Well, I checked
all three of my flowering size ventricosa/burkei plants and found
that they all have three longituudinal veins in the leaf-blade. Two
of them (one of which was supposedly col lected from where
_N.burkei_ is found) have red pitchers and are strongly waisted.
Infact the only difference I found between the three that the one
with the pale pitchers tends to produce pitchers with slightly
smaller lids, though all three have the same shape. On the other
the red-pitchered plants the peristome tends to be a bit flatter,
where as the other's peristomes are tend to be more rounded... I
can only think that these are merely personal differences and that
they are all N.ventricosa, but maybe I missed the "nerves."

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