What is "stenachaenium"

Stenachaenium is a genus of South Americaan plants in the daisy family.

1. Stenachaenium adenanthum (Sch.Bip. ex Krasch.) Krasch. - Brazil ( Paraná, Rio Grande do Sul, Santa Catarina, São Paulo)
2. Stenachaenium campestre Baker - Brazil ( Paraná, Rio Grande do Sul, Santa Catarina), Argentina ( Misiones, Corrientes, Entre Ríos), Paraguay ( Guairá), Uruguay ( Cerro Largo, Montevideo, Colonia, San José, Soriano)
3. Stenachaenium macrocephalum Benth. ex Benth. & Hook.f. - Brazil ( Paraná, Rio Grande do Sul)
4. Stenachaenium megapotamicum (Spreng.) Baker - Brazil ( Rio Grande do Sul, Santa Catarina)
5. Stenachaenium riedelii Baker - Brazil ( Paraná, Rio Grande do Sul, Santa Catarina, São Paulo)