Trixis Explained

Trixis is a genus of shrubs in the family Asteraceae, native to North and South America including the West Indies.^{[1] [2]}

Members of the genus are commonly known as threefolds due to the outer lip of the corolla. The generic name is derived from, the Greek word for 'threefold'.^{[3] [4]}

Species^{[5] [6]}

• Trixis aggregata Rusby - Bolivia
• Trixis alata D.Don - Guerrero, México State, Guanajuato
• Trixis angustifolia DC. - San Luis Potosí
• Trixis anomala B.L.Turner - Chiapas
• Trixis antimenorrhoea (Schrank) Mart. ex Baker - South America
• Trixis bowmanii Baker - Brazil
• Trixis cacalioides (Kunth) D.Don - Peru
• Trixis calcicola B.L.Rob. - Guerrero
• Trixis californica Kellogg  - American threefold - USA (CA AZ NM TX), Mexico (Baja California, Baja California Sur, Sonora, Chihuahua, Coahuila, Durango, Zacatecas, Nuevo León)
• Trixis chiapensis C.E.Anderson - Guatemala, Chiapas
• Trixis erosa Sw. - Costa Rica, West Indies
  • Trixis glaziovii Baker - Paraná, Rio de Janeiro Trixis grandibracteata C.E.Anderson - Guerrero
• Trixis grisebachii Kuntze - Bolivia, northern Argentina
• Trixis haenkei Sch.Bip. - Durango, Sinaloa
• Trixis hassleri Chodat - Paraguay
• Trixis hyposericea S.Wats. - Jalisco, Michoacán, Nayarit
• Trixis inula Crantz  - Tropical threefold - USA (TX), Mexico, Central America, West Indies, Colombia, Venezuela
• Trixis lessingii DC. - Paraguay, Uruguay, Brazil
• Trixis longifolia D.Don - México State, Sinaloa
• Trixis megalophylla Greenm. - México State, Oaxaca, Puebla
• Trixis mexicana Lex. - Michoacán
• Trixis michuacana Lex. - Michoacán, Jalisco, Nayarit
• Trixis nelsonii Greenm. - Guatemala, Chiapas, Oaxaca
• Trixis nobilis (Vell.) Katinas - Paraguay, Uruguay, Brazil, Argentina
• Trixis ophiorhiza Gardner - Bolivia, Brazil
• Trixis pallida Less. - Paraguay, Uruguay, Brazil, Argentina
• Trixis parviflora C.E.Anderson - Oaxaca
• Trixis peruviana Katinas - Peru
• Trixis praestans (Vell.) Cabrera - Paraguay, Uruguay, Brazil, Argentina
• Trixis pringlei B.L.Rob. & Greenm. - Guerrero, Oaxaca
• Trixis proustioides Hieron. - Colombia
• Trixis pterocaulis B.L.Rob. & Greenm. - Colima, Jalisco, Nayarit, Sinaloa, Sonora
• Trixis silvatica B.L.Rob. & Greenm. - Oaxaca
• Trixis spicata Gardner - Paraguay, Uruguay, Brazil
• Trixis thyrsoidea Dusén ex Malme - southern Brazil
• Trixis vauthieri DC. - eastern Brazil
  • Trixis verbascifolia (Gardner) S.F.Blake - Minas Gerais, Rio de Janeiro Trixis villosa (Spreng.) Sch.Bip. - Brazil

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

References

• C. . Anderson . 1972 . A monograph of the Mexican and Central American species of Trixis (Compositae) . Memoirs of the New York Botanical Garden . 22 . 3 . 1–68.

Notes and References

1. https://www.biodiversitylibrary.org/page/11267833#page/327/mode/1up Browne, Patrick. 1756. Civil and Natural History of Jamaica in Three Parts page 312
2. https://www.biodiversitylibrary.org/page/11267833#page/550/mode/1up Browne, Patrick. 1756. Civil and Natural History of Jamaica in Three Parts plate 33, figure 1 on left
3. Book: Quattrocchi, Umberto . CRC World Dictionary of Plant Names . 4 R-Z . 2000 . Taylor & Francis US . 978-0-8493-2678-3 . 2737.
4. http://www.efloras.org/florataxon.aspx?flora_id=1&taxon_id=133845 Flora of North America Vol. 19, 20 and 21 Page 75, Threefold, Trixis P. Browne, Civ. Nat. Hist. Jamaica. 312, plate 33, fig. 1. 1756.
5. Web site: GRIN Species Records of Trixis . Germplasm Resources Information Network . United States Department of Agriculture . 2010-10-01.
6. http://bonap.net/NAPA/TaxonMaps/Genus/County/Trixis Biota of North America Program 2013 county distribution maps