Guaçatonga

Casearia sylvestris

Also known as Guaçatonga, Café-do-mato, Chá-de-bugre, Erva-de-lagarto, Wild coffee bush

At a glance

Family

Salicaceae (formerly placed in Flacourtiaceae)

Type

Evergreen shrub or small understory tree

Parts used

Leaves, occasionally bark

Size

2 to 10 meters tall, sometimes taller in older forest stands

Bloom

Small, greenish white flowers, typically late winter into spring in its native range

Habitat

Understory of the Atlantic Forest, cerrado woodlands, riverbanks, and secondary forest from Mexico south through the Caribbean and much of South America, with Brazil as its stronghold

Acquisition

Forage

This plant in HerbSense

Key benefits

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Traditional wound care

Soothed digestive complaints

Traditional anti-inflammatory use

Folk remedy for skin ulcers

Traditional uses

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Long before it drew the attention of pharmacologists, guaçatonga was already a fixture of daily plant medicine across Brazil's forests and backlands. Rural and Indigenous communities, including Tupi-Guarani peoples, crushed or chewed the fresh leaves into a green paste and pressed it directly onto wounds, insect bites, and skin ulcers, trusting it to calm irritation and help the skin along. A tea brewed from the dried leaf became a common household remedy for an upset stomach or a nagging digestive complaint, passed down the way a grandmother's recipe is passed down, by memory rather than measurement. Its folk reputation as a snakebite treatment traveled just as widely, though this was always meant as first aid on the way to real help, never a replacement for it.

How to grow & use it

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Pairs well with

✦Calendula
✦Plantain leaf
✦Chamomile

Substitutes

✦Calendula
✦Comfrey leaf

Choose it when

“For old forest wisdom in a leaf, steeped slow and used with care.”

Did you know?

The genus Casearia honors Johannes Casearius, a seventeenth century Dutch clergyman who helped the botanist Paul Hermann collect and catalog plants in Ceylon, so a name first written down on the other side of the world came to label a humble forest shrub across the Atlantic in Brazil.

Safety

Guaçatonga's leaves contain potent cytotoxic compounds (casearins) that haven't been well studied for internal human use, so it shouldn't be used casually or in concentrated form, and it should be avoided in pregnancy and breastfeeding. Rural tradition sometimes applies the crushed leaf to snakebite, but this is not a substitute for emergency antivenom and medical care.