Piptadenia
Piptadenia is a genus of tropical shrubs and trees of the family Fabaceae. It includes 28 species native to the tropical Americas, ranging from central Mexico to southern Brazil and northwestern Argentina. Species
28 species are accepted:
Piptadenia adiantoides (Spreng.) Macbr. Piptadenia affinis Burkart
Piptadenia amazonica 
Piptadenia anolidurus Barneby
Piptadenia boliviana 
Piptadenia buchtienii  Barneby
Piptadenia cuzcoensis Barneby
Piptadenia floribunda Kleinhoonte
Piptadenia gonoacantha (Mart.) Macbr. Piptadenia imatacae Barneby
Piptadenia irwinii G.P.Lewis
var. irwinii G.P.Lewis
var. unijuga G.P.Lewis

Piptadenia killipii Macbr. var. cacaophila G.P.Lewis
var. killipii Macbr. Piptadenia laxipinna B.M.Barroso
Piptadenia leucoxylon Barneby & Grimes
Piptadenia macradenia 
Piptadenia micracantha Benth. Piptadenia minutiflora Ducke
Piptadenia paniculata Benth. Piptadenia peruviana (J.F.Macbr.) Barneby
Piptadenia pteroclada Benth. Piptadenia ramosissima (Mart. ex Colla) Benth. Piptadenia retusa 
Piptadenia robusta Pittier
Piptadenia santosii Barneby ex G.P.Lewis
Piptadenia trisperma (Vell.) Benth. Piptadenia uaupensis Spruce ex Benth. Piptadenia uliginosa Britton & Killip
Piptadenia voronoffii Pittier. Piptadenia weberbaueri Harms

Several species formerly placed in this genus (such as those used to prepare the psychotomimetic snuffs vilca and yopo/parica) are now considered to be in the genus Anadenanthera. Three species have also been placed in genus Adenopodia. Others have been moved to the genus Pityrocarpa. References

Mimosoids
Fabaceae genera
Neotropical realm flora