Although Cassia alata is more common in the Amazon floodplain, we see some of these plants on the Planalto, where Bosque Santa Lucia is located. The common name here is "mata pastagem", which translates into "kill the pasture". It grows like a weed in cattle and buffalo pasture lands, thus the name. The only English name I know is "the candlestick plant." I've never know of anyone to use the plant as a medicine but I see many advertisements for Cassia alata on the internet under the name of "ringworm bush".