Alkaloids reported as (mg) per (100g) raw dried plant, and as percent of total plant source weight:
Acacia bark
0.71% NN-DMT
Acacia maidenii bark
0.36% NN-DMT
Acacia simplicifolia bark
0.86% NN-DMT
Mimosa hostilis root (bark)
0.57% NN-DMT
Virola shoots & flowers
0.44% NN-DMT
Desmanthus illinoensis root (bark)
0.34% NN-DMT
Pilocarpus organensis
1.06% 5-MeO-DMT
Phalaris tuberosa
0.10% NN-DMT
0.022% 5-MeO-DMT
0.005% 5-OH-DMT
Phalaris arundinacea ('net gossip)
0.060% NN-DMT
?? 5-MeO-DMT
Psychotria species (averaged, from Jonathan Ott)
0.200% NN-DMT

Found nothing on Ayahusca, but however, you simply have to make it in a brew. I had an earlier post on how to do this with Mimosa Hostilis, but it applies to any of these plant constitutes.