Trixis

Trixis is a genus of shrubs in the aster family, Asteraceae, native to North and South America including the West Indies.

Members of the genus are commonly known as threefolds due to the outer lip of the corolla. The generic name is derived from τριχος (trixos), the Greek word for threefold.

1. Trixis aggregata Rusby - Bolivia
2. Trixis alata D.Don - Guerrero, México State, Guanajuato
3. Trixis angustifolia DC. - San Luis Potosi
4. Trixis anomala B.L.Turner - Chiapas
5. Trixis antimenorrhoea (Schrank) Mart. ex Baker - South America
6. Trixis bowmanii Baker - Brazil
7. Trixis cacalioides (Kunth) D.Don - Peru
8. Trixis calcicola B.L.Rob. - Guerrero
9. Trixis californica Kellogg – American threefold - USA (CA AZ NM TX), Mexico (Baja California, Baja California Sur, Sonora, Chihuahua, Coahuila, Durango, Zacatecas, Nuevo León)
10. Trixis chiapensis C.E.Anderson - Guatemala, Chiapas
11. Trixis erosa Sw. - Costa Rica, West Indies
12. Trixis glaziovii Baker - Paraná, Rio de Janeiro
13. Trixis grandibracteata C.E.Anderson - Guerrero
14. Trixis grisebachii Kuntze - Bolivia, northern Argentina
15. Trixis haenkei Sch.Bip. - Durango, Sinaloa
16. Trixis hassleri Chodat - Paraguay
17. Trixis hyposericea S.Wats. - Jalisco, Michoacán, Nayarit
18. Trixis inula Crantz – Tropical threefold - USA (TX), Mexico, Central America, West Indies, Colombia, Venezuela
19. Trixis lessingii DC. - Paraguay, Uruguay, Brazil
20. Trixis longifolia D.Don - México State, Sinaloa
21. Trixis megalophylla Greenm. - México State, Oaxaca, Puebla
22. Trixis mexicana Lex. - Michoacán
23. Trixis michuacana Lex. - Michoacán, Jalisco, Nayarit
24. Trixis nelsonii Greenm. - Guatemala, Chiapas, Oaxaca
25. Trixis nobilis (Vell.) Katinas - Paraguay, Uruguay, Brazil, Argentina
26. Trixis ophiorhiza Gardner - Bolivia, Brazil
27. Trixis pallida Less. - Paraguay, Uruguay, Brazil, Argentina
28. Trixis parviflora C.E.Anderson - Oaxaca
29. Trixis peruviana Katinas - Peru
30. Trixis praestans (Vell.) Cabrera - Paraguay, Uruguay, Brazil, Argentina
31. Trixis pringlei B.L.Rob. & Greenm. - Guerrero, Oaxaca
32. Trixis proustioides Hieron. - Colombia
33. Trixis pterocaulis B.L.Rob. & Greenm. - Colima, Jalisco, Nayarit, Sinaloa, Sonora
34. Trixis silvatica B.L.Rob. & Greenm. - Oaxaca
35. Trixis spicata Gardner - Paraguay, Uruguay, Brazil
36. Trixis thyrsoidea Dusén ex Malme - southern Brazil
37. Trixis vauthieri DC. - eastern Brazil
38. Trixis verbascifolia (Gardner) S.F.Blake - Minas Gerais, Rio de Janeiro
39. Trixis villosa (Spreng.) Sch.Bip. - Brazil

Numerous species once included in Trixis but now considered better suited to other genera: Acourtia Clibadium Dolichlasium Holocheilus Perezia Riencourtia