Belongs within: Asteraceae.
The Mutisioideae are a cosmopolitan group of composite-flowered plants, most diverse in South America, whose members bear flowerheads with overlapping involucral bracts, disc florets with deeply incised corollas, and styles usually sticking far out of the florets.
<==Mutisioideae [Mutisieae]PF02
|--LeucomerisPF02
|--NoueliaPF02
|--SchlechtendahliaS06
|--HyalisS06
|--PlaziaS06
|--OnoserisS06
|--ChuquiragaS06
|--FlotoviaS06
|--DoniophytumS06
|--MoquiniaS06
|--StifftiaS06
|--PachylaenaS06
|--BrachycladusS06
|--Chaetanthera [incl. Carmelita, Tylloma]S06
|--Oriastrum [incl. Egania]S06
|--Trichocline spathulataS06, GK00
|--MacrachaeniumS06
|--AmeghinoaS06
|--HyaloserisS06
|--Proustia stenophyllaS06, J87
|--StrongylomopsisS06
|--TriptiliumS06
|--PamphaleaS06
|--Leuceria salinaS06, D03
|--Trixis [incl. Cleanthes]S06
| `--T. californicaH93
|--Nassauvia [incl. Strongyloma]S06
| `--N. serpensD03
|--MutisiaYY22
| |--M. decurrensD03
| `--M. retusaD03
|--Perezia [incl. Homoianthus]S06
| |--P. linearisD03
| |--P. magellanicaD03
| |--P. pediculariaefoliaD03
| `--P. thurberiRC02
|--ChaptaliaS06
| |--C. albicansJ87
| |--C. (sect. Leria) incana Cuatrecasas 1961C61
| |--C. meridensisC61
| |--C. paramensis Cuatrecasas 1961C61
| `--C. runcinataC61
| |--C. r. var. runcinataC61
| `--C. r. var. graminifoliaC61
`--GerberaM99
|--G. discolorM30
|--G. galpiniM30
|--G. glandulosaM30
|--G. hybridaMN03
|--G. jamesoniiM99
|--G. niveaO88
|--G. piloselloidesM30
|--G. plantagineaM30
`--G. viridifoliaM30
Nomen nudum: Nassauvia dusenii Hoffm. in Dusén 2003D03
*Type species of generic name indicated
References
[C61] Cuatrecasas, J. 1961. Studies on Andean Compositae V. Proceedings of the Biological Society of Washington 74: 7–28.
[D03] Dusén, P. 1903. The vegetation of western Patagonia. In: Scott, W. B. (ed.) Reports of the Princeton University Expeditions to Patagonia, 1896–1899 vol. 8. Botany pp. 1–34. The University: Princeton (New Jersey).
[GK00] Gibson, N., & G. J. Keighery. 2000. Flora and vegetation of the Byenup-Muir reserve system, south-west Western Australia. CALMScience 3 (3): 323–402.
[H93] Hickman, J. C. (ed.) 1993. The Jepson Manual: Higher Plants of California. University of California Press: Berkeley (California).
[J87] Judd, W. S. 1987. Floristic study of Morne La Visite and Pic Macaya National Parks, Haiti. Bulletin of the Florida State Museum—Biological Sciences 32 (1): 1–136.
[M99] Matthews, M. 1999. Heliothine Moths of Australia: A guide to bollworms and related noctuid groups. CSIRO Publishing.
[MN03] Moffitt, M. C., & B. A. Neilan. 2003. Evolutionary affiliations within the superfamily of ketosynthases reflect complex pathway associations. Journal of Molecular Evolution 56: 446–457.
[M30] Moss, C. E. 1930. Some natural hybrids of Clematis, Anemone, and Gerbera from the Transvaal. Proceedings of the Linnean Society of London 141: 36–40.
[O88] Ohba, H. 1988. The alpine flora of the Nepal Himalayas: an introductory note. In: Ohba, H., & S. B. Malla (eds) The Himalayan Plants vol. 1. The University Museum, University of Tokyo, Bulletin 31: 19–46.
[PF02] Panero, J. L., & V. A. Funk. 2002. Toward a phylogenetic subfamilial classification for the Compositae (Asteraceae). Proceedings of the Biological Society of Washington 115 (4): 909–922.
[RC02] Riley, E. G., S. M. Clark, R. W. Flowers & A. J. Gilbert. 2002. Chrysomelidae Latreille 1802. In: Arnett, R. H., Jr, M. C. Thomas, P. E. Skelley & J. H. Frank (eds) American Beetles vol. 2. Polyphaga: Scarabaeoidea through Curculionoidea pp. 617–691. CRC Press.
[S06] Stuckert, T. 1906. Distribución geográfica de la flora Argentina. Géneros de la familia de las compuestas. Anales del Museo Nacional de Buenos Aires, serie 3, 6: 303–309.
[YY22] Yampolsky, C., & H. Yampolsky. 1922. Distribution of sex forms in the phanerogamic flora. Bibliotheca Genetica 3: 1–62.