What is "atractantha"

Atractantha is a South American genus of bamboo in the grass family, native to Brazil, Colombia, and Venezuela.

1. Atractantha amazonica Judz. & L.G.Clark - Amazonas in Brazil, Amazonas in Venezuela, Vaupés in Colombia
2. Atractantha aureolanata Judz. - Espírito Santo, Bahia
3. Atractantha cardinalis Judz. - Bahia
4. Atractantha falcata McClure - Bahia
5. Atractantha radiata McClure - Bahia
6. Atractantha shepherdiana Santos-Gonç. - Espírito Santo