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Classification System: APG IV

Superregnum: Eukaryota
Regnum: Plantae
Cladus: Angiosperms
Cladus: Eudicots
Cladus: Core eudicots
Cladus: Asterids
Cladus: Campanulids
Ordo: Asterales

Familia: Asteraceae
Subfamilia: Asteroideae
Tribus: Astereae
Genus: Isocoma
Species: I. acradenia – I. arguta – I. azteca – I. coronopifolia – I. drummondii – I. humilis – I. menziesii – I. pluriflora – I. reneta – I. rusbyi – I. tenuisecta – I. veneta

Isocoma Nutt.

Type species: Isocoma vernonioides Nutt.


Haplopappus sect. Isocoma (Nutt.) H.M.Hall


Nuttall, T. 1840. Descriptions of new species and genera of plants in the natural order of the Compositae, collected in a tour across the continent to the Pacific, a residence in Oregon, and a visit to the Sandwich Islands and upper California, during the years 1834 and 1835. Transactions of the American Philosophical Society, held at Philadelphia, for promoting useful knowledge, n.s.[new series][ser. 2], 7: 283–453. BHL Reference page.


International Plant Names Index. 2017. Isocoma. Published online. Accessed: Dec. 17 2017.
The Plant List 2013. Isocoma in The Plant List Version 1.1. Published on the internet. Accessed: 2017 Dec. 17. 2017. Isocoma. Missouri Botanical Garden. Published on the internet. Accessed: 2017 Dec. 17.
Hassler, M. 2017. Isocoma. World Plants: Synonymic Checklists of the Vascular Plants of the World In: Roskovh, Y., Abucay, L., Orrell, T., Nicolson, D., Bailly, N., Kirk, P., Bourgoin, T., DeWalt, R.E., Decock, W., De Wever, A., Nieukerken, E. van, Zarucchi, J. & Penev, L., eds. 2017. Species 2000 & ITIS Catalogue of Life. Published on the internet. Accessed: 2017 Dec 17. Reference page.

Vernacular names
English: goldenbush
Isocoma commonly called Jimmyweed or goldenweed,[2] is a genus of North American semi-woody shrubs in the sunflower family. It is found in the semi-arid areas of Southwestern United States and Mexico.[3][4][5]

The name of this genus is derived from the Greek for "equal hair" referring to the pappus on the seed.[2]

Isocoma species are used as food plants by the larvae of some Lepidoptera species including Schinia bicuspida (recorded on I. drummondii), Schinia erosa (feeds exclusively on I. acradenia) and Schinia tertia (recorded on I. pluriflora).


Isocoma acradenia (Greene) Greene - alkali goldenbush, alkali jimmyweed - Baja California, Sonora, California Arizona Nevada Utah
Isocoma arguta Greene - Carquinez goldenbush - Solano County in California
Isocoma azteca G.L.Nesom - Aztec goldenbush - Arizona New Mexico
Isocoma coronopifolia (Gray) Greene - common goldenbush, goldenweed - southern Texas, Coahuila, Nuevo León, Tamaulipas
Isocoma drummondii (Torr. & Gray) Greene - Drummond's goldenbush, Drummond's jimmyweed - southern Texas, Tamaulipas
Isocoma felgeri G.L.Nesom - Sonora
Isocoma gypsophila B.L.Turner - Zacatecas, Nuevo León
Isocoma hartwegii (A.Gray) Greene - San Luis Potosí, Zacatecas, Guanajuato
Isocoma humilis G.L.Nesom - Zion goldenbush - Utah (Kane + Washington Cos)
Isocoma menziesii (Hook. & Arn.) G.L.Nesom - Menzies' goldenbush - Baja California, California
Isocoma pluriflora (Torr. & Gray) Greene - rayless goldenrod, southern goldenbush, southern jimmyweed - Texas New Mexico Arizona Chihuahua
Isocoma rusbyi Greene - Rusby's goldenbush - Arizona New Mexico Utah Colorado
Isocoma tehuacana G.L.Nesom - Puebla
Isocoma tenuisecta Greene - burrow goldenweed, burroweed - Arizona New Mexico
Isocoma tomentosa G.L.Nesom - Chihuahua
Isocoma veneta (Kunth) Greene - jimmyweed - Mexico from Coahuila to Oaxaca


"Flann, C (ed) 2009+ Global Compositae Checklist". Archived from the original on 2014-12-04. Retrieved 2014-12-04.
116573 Flora of North America Vol. 20 Page 439 Jimmyweed, goldenweed, Isocoma Nuttall, Trans. Amer. Philos. Soc., n. s. 7: 320. 1840.
Nuttall, Thomas. 1840. Transactions of the American Philosophical Society, new series 7: 320 in English
Tropicos, Isocoma Nutt.
Everitt, J.H.; Lonard, R.L.; Little, C.R. (2007). Weeds in South Texas and Northern Mexico. Lubbock: Texas Tech University Press. ISBN 0-89672-614-2
Biota of North America Program 2013 county distribution maps
The Plant List search for Isocoma
Nesom, G.L. 1991. Taxonomy of Isocoma (Compositae: Astereae). Phytologia 70(2): 69–114 includes descriptions and distribution maps for 15 species

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