> S.purpurea purpurea is generally smaller than venosa with the
> opening being proportionally smaller than that of venosa. As well,
> venosa is pubescent while purpurea is glabrous (sp?). Run your finger
> along the pitcher and you should be able to tell the difference.
>
> I think there's some trick about pinching the hood together and
> if it's still the size of the opening, it's venosa. If it's smaller than
> the opening, it's purpurea. I'm not sure how reliable this technique is
> though.
Don't bother with that... just get a large pitcher, stand back.. if the side of
the hood is straight it's purpurea, if it's frilly it's venosa. If it's halfway
between you either have an intergraded plant or one serious eyesight problem (no
offence).
Kind Regards,
Toby