What is "trigonospermum"

Trigonospermum is a genus of Mesoamerican plants in the daisy family.

1. Trigonospermum adenostemmoides Less. - Chiapas, Veracruz
2. Trigonospermum annuum McVaugh & Lask. - Jalisco
3. Trigonospermum auriculatum B.L.Turner - Guerrero
4. Trigonospermum hintoniorum B.L.Turner - Tamaulipas, Nuevo León
5. Trigonospermum melampodioides DC. - Oaxaca, Chiapas, Michoacán, Jalisco, Guerrero, Sinaloa, Morelos, Nayarit
6. Trigonospermum stevensii S.D.Sundb. & Stuessy - Nicaragua, Guatemala

see Sigesbeckia

• Trigonospermum blakei - Sigesbeckia blakei