Key to the species of Gaylussacia in Rio Grande do Sul state, Brazil

1. Corolla red, urceolate ................................................................................................................................... Gaylussacia brasiliensis

- Corolla white, campanulate ................................................................................................................................................................2

2. Leaf blade linear-oblanceolate to linear-lanceolate, adaxial surface puberulent.......................................... Gaylussacia angustifolia

- Leaf blade oblong to ellipitic, adaxial surface pubescent.................................................................... Gaylussacia pseudogaultheria