By effect
In this collection

Psychotria viridis
Psychedelic · 5-20 minutes (smoked) · Intense
The paradigmatic visionary substance. Smoked DMT produces some of the most consistently described visual content in psychedelic literature.

Banisteriopsis caapi + Psychotria viridis
Hallucinogenic · 4-8 hours · Intense
The orally active form of DMT, slower and more sustained. Visions are central to its traditional and contemporary use.

Salvia divinorum
Dissociative · 5-30 minutes (smoked) · Intense
A distinct flavor of visual experience: mechanical, geometric, sometimes deeply strange. Not a classical psychedelic but visually one of the strongest.

Lophophora williamsii
Hallucinogenic · 10-12 hours · Intense
Mescaline in its traditional cactus form. Visions characterized by warmth, depth, and a slower onset than the synthetic psychedelics.

Echinopsis pachanoi
Psychedelic · 8-14 hours · Intense
A second mescaline-bearing cactus, longer in duration than peyote. Common to Andean ceremonial practice.

Claviceps purpurea
Psychedelic · 8-12 hours · Moderate
The classical synthetic psychedelic. Long-duration visual experience often described as more analytical than its plant counterparts.

Psilocybe cubensis (and 200+ species)
Hallucinogenic · 4-6 hours · Moderate
Mushroom visions tend toward the organic and emotionally textured. The most widely used classical psychedelic worldwide.

4-Bromo-2,5-dimethoxyphenethylamine
Psychedelic · 4-6 hours · Moderate
A widely loved visual substance with a relatively short duration and gentler emotional profile than other classical psychedelics.
Each collection is editorial -- a path through the library, not a recommendation. Read each medicine on its own terms.