Oxalis violacea L.
Engl.: violet wood-sorrel.
Port.: azedinha grama.
Bot. syn.: Sassia tinctoria Molina.

Brazilian Drugs at the Vienna Exhibition.

Botanical name: 
Pilocarpus jaborandi
Copaifera langsdorffii
Pachira
Zanthoxylum
Abuta rufescens
Anchietea salutaris
Aspidosperma polyneuron
Baccharis genistelloides
Canavalia gladiata
Cedrela odorata
Cnidoscolus urens
Crescentia cujete
Cuscuta racemosa
Erythrina verna
Geissospermum laeve
Hortia arborea
Langsdorffia hypogaea
Lonchocarpus peckoltii
Luffa operculata
Mangifera indica
Oxalis violacea
Piper mollicomum
Pradosia lactescens
Protium heptaphyllum
Remijia ferruginea
Sicana odorifera
Solanum insidiosum
Stryphnodendron polyphyllum
Thevetia peruviana
Vanilla palmarum
Zanthoxylum tingoassuiba
Croton erythraema
Gardenia suaveolens
Piptadenia rigida
Simaba salubris

Classic texts: Journals: AJP 1884.