Probably only wishful thinking...I found this:
Trichocereus grandiflorus
Though T. grandiflorus is not known as a traditional hallucinogen, this short columnar species has gained interest due to Shulgin's unpublished chemical analysis, which indicated the presence of N,N-dimethyltryptamine (DMT), the powerful hallucinogenic drug contained in numerous plants known for their historical use throughout South America.
Upon the reanalysis of T. grandiflorus Shulgin was unable to confirm the presence of DMT and had some concern as to whether or not the same plant material was used for the confirmation. Shulgin's belief was that he used the red-flowering variety originally and the yellow-flowering variety afterwards, but there had also been concern about the use of contaminated laboratory equipment.
Contemporary human bioassay has strongly suggested the presence of mescaline, at least in the white-flowered variety.
Several flower colors exist, including white, yellow, and red. The white-flowered species is nocturnal-blooming and is known as Trichocereus grandiflorus, while the red-flowered day-bloomer is better known as Helianthocereus grandiflorus. Both are in their own distinct taxa, but are closely related. A yellow-flowered day-blooming variety is also known to exist, but it may simply be an "affinity" species that may not in fact be T.grandiflorus. The red- and white-flowering T. lobivioides "grandiflorus" appear to be synonymous with H. grandiflorus and T. grandiflorus respectively. Claritive identification of the variations and their proper taxon classification is necessary.
Often this species is referred to as Lobivia. Of the very few Helianthocereus and Lobivia species tested for alkaloids, none have been found to contain mescaline.
Would it be dangerous to bioassay? Any toxic Echinopsis? I'm not as hopeful as to try drying it out and using it as incense, despite Shulgin's lab occurences Ha ha.