What is "rhabdocaulon"

Rhabdocaulon is a genus of plants in the Lamiaceae, first described as a genus in 1936. It is native to South America.

1. Rhabdocaulon coccineum (Benth.) Epling - southern Brazil
2. Rhabdocaulon denudatum (Benth.) Epling - Brazil
3. Rhabdocaulon erythrostachys Epling - southern Brazil
4. Rhabdocaulon gracile (Benth.) Epling - southern Brazil
5. Rhabdocaulon lavanduloides (Benth.) Epling - southern Brazil
6. Rhabdocaulon stenodontum (Briq.) Epling - southern Brazil, Paraguay, northeastern Argentina
7. Rhabdocaulon strictum (Benth.) Epling - southern Brazil, Uruguay, northeastern Argentina