http://troutsnotes.com/p...d_2007_with_addendum.pdf^ An amazing (and slightly messy) fountain of knowledge on these substances and what plants and animals contain them.
If there was bufotenine mixed with the 5-MeO-DMT in the alvarius sample, then when you smoke you'd have the effects from both. Bufotenine does not turn into 5-MeO-DMT when smoking as has been erroneously said before (though when consuming orally with a MAOI,
5-MeO-DMT may partially turn into bufotenine in the body).
I've tested one alvarius resin sample and it contained only 5-MeO-DMT, no bufotenine. Not sure how much it varies.
Bufotenine appears in a bunch of other Bufo toads, while I think alvarius is the only one so far that has shown 5-MeO-DMT.
As for colubrina seeds, they seem to mostly have bufotenine yes.