Tagetes tenuifolia

Life-forms

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: Tageteae
Genus: Tagetes
Species: Tagetes tenuifolia
Name

Tagetes tenuifolia Cav., 1793.
Synonyms

Heterotypic
Tagetes jaliscensis var. minor Greenm., Publ. Field Columb. Mus., Bot. Ser. 2: 273. 1907.
Tagetes macroglossa Pol., Linnaea 41: 580. 1878.
Tagetes microglossa Benth., Bot. Voy. Sulphur 118. 1845.
Tagetes oligocephala DC., Prodr. (Candolle) 5: 654. 1836.
Tagetes peduncularis Cav., Descr. Pl. (Cavanilles) 201. 1802.

Distribution
Native distribution areas:

Continental:Northern America
Regional: Mexico
Mexico (Aguascalientes, Campeche, Chiapas, Chihuahua, Colima, Ciudad de Mexico, Durango, Guanajuato, Guerrero, Hidalgo, Jalisco, Mexico State, Michoacan, Morelos, Nayarit, Oaxaca, Puebla, Queretaro, Quintana Roo, San Luis Potosi, Sinaloa, Tlaxcala, Veracruz, Yucatan, Zacatecas)
Continental:Southern America
Costa Rica, Guatemala, Honduras, Nicaragua, Panama, Colombia (Boyacá, Magdalena), Peru, Ecuador

References: Brummitt, R.K. 2001. TDWG – World Geographical Scheme for Recording Plant Distributions, 2nd Edition

References

Cavanilles, A.J. 1793. Icon. 2(2):54, t. 169.
Cavanilles, A.J. 1802. Descripción de las plantas que D. Antonio Josef Cavanilles demostró en las lecciones públicas del año 1801. cxxxvi + 625 pp. Madrid, Imprenta Real. BHL Biblioteca Digital Reference page.

Links

Hassler, M. 2018. Tagetes tenuifolia. 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. 2018. Species 2000 & ITIS Catalogue of Life. Published on the internet. Accessed: 2018 Apr. 17. Reference page.
International Plant Names Index. 2018. Tagetes tenuifolia. Published online. Accessed: Apr. 17 2018.
The Plant List 2013. Tagetes tenuifolia in The Plant List Version 1.1. Published on the internet. Accessed: 2018 Apr. 17.
Tropicos.org 2018. Tagetes tenuifolia. Missouri Botanical Garden. Published on the internet. Accessed: 2018 Apr. 17.
USDA, ARS, Germplasm Resources Information Network. Tagetes tenuifolia in the Germplasm Resources Information Network (GRIN), U.S. Department of Agriculture Agricultural Research Service. Accessed: 07-Oct-06.

Vernacular names
English: signet marigold, lemon marigold
suomi: Kääpiösamettikukka
français: Tagète citron
Nāhuatl: Tepēcempōhualxōchitl
polski: Aksamitka wąskolistna

Tagetes tenuifolia, the signet marigold,[2] golden marigold or lemon marigold,[3] is a species of the wild marigold in the daisy family (Asteraceae). It is widespread across most of Mexico as well as Central America, Colombia, and Peru.[4][5][6][7][8]

Tagetes tenuifolia is an annual herb sometimes reaching as much as 50 cm (20 in) tall. Leaves are less than 3 cm (1+1⁄4 in) long, deeply divided into many small parts. The plant produces many small bright yellow flower heads in a flat-topped array, each head with five ray florets and 7–9 disc florets.[9]

Uses
Culinary

The plant's edible flowers can be used as a garnish because of its lemon-like flavor.
Gardening

Marigolds are regarded as one of the easiest plants to grow. They are very hardy, and may survive minor frosts. The plant is well suited to a mostly sunny position, and fairly well draining soil. Overly fertile soil may cause the plants to become bushy and produce less flowers. Marigolds come in a variety of colours, but mostly yellows and oranges, flowering in the middle of Summer. They can be planted out when there's no more risk of frosts. They can be purchased from most nurseries, and seeds are readily available in stores. It is often used as a companion plant for its insect-repelling properties.
Other

Some species of Tagetes possess a characteristic scent, which repels insects such as mosquitoes, small animals and smaller, burrowing insects. Tagetes tenuifolia is one of these and is often planted near small creeks or puddle prone areas to repel bugs, especially mosquitoes. It was also found that the Tagetes tenuifolia contains thiophene which is a biocidal compound that acts as a natural pesticide to control nematodes in the field.[3]

Traditional Medicine

Traditionally, the plants were decocted and used as a treatment for snakebites in Mexico, and the leaves were used as medicine for bruises in Peru.[3] Tagetes tenuifolia could also be used as treatments for stomach flu in terms of indigestion, constipation, infant diarrhea.[10]

References

The Plant List, Tagetes tenuifolia Cav.
BSBI List 2007 (xls). Botanical Society of Britain and Ireland. Archived from the original (xls) on 2015-06-26. Retrieved 2014-10-17.
Chitrakar, Bimal; Zhang, Min; Bhandari, Bhesh (2019-07-01). "Edible flowers with the common name "marigold": Their therapeutic values and processing". Trends in Food Science & Technology. 89: 76–87. doi:10.1016/j.tifs.2019.05.008. ISSN 0924-2244. S2CID 181985084.
Turner, B. L. 1996. The Comps of Mexico: A systematic account of the family Asteraceae, vol. 6. Tageteae and Athemideae. Phytologia Memoirs 10: i–ii, 1–22, 43–93
Breedlove, D.E. 1986. Flora de Chiapas. Listados Florísticos de México 4: i–v, 1–246
Williams, L. O. 1976. Tribe VI, Helenieae. En: D. L. Nash & L. O. Williams (Eds), Flora of Guatemala - Part XII. Fieldiana, Botany 24(12): 361–386, 571–580
Idárraga-Piedrahita, A., R. D. C. Ortiz, R. Callejas Posada & M. Merello. (eds.) 2011. Flora de Antioquia: Catálogo de las Plantas Vasculares 2: 9–939. Universidad de Antioquia, Medellín
Berendsohn, W.G. & A.E. Araniva de González. 1989. Listado básico de la Flora Salvadorensis: Dicotyledonae, Sympetalae (pro parte): Labiatae, Bignoniaceae, Acanthaceae, Pedaliaceae, Martyniaceae, Gesneriaceae, Compositae. Cuscatlania 1(3): 290–1–290–13
Greenman, Jesse More 1907. Publications of the Field Columbian Museum, Botanical Series 2(6): 272-273 as Tagetes jaliscensis var. minor
Salehi, Bahare; Valussi, Marco; Morais-Braga, Maria Flaviana Bezerra; Carneiro, Joara Nalyda Pereira; Leal, Antonio Linkoln Alves Borges; Coutinho, Henrique Douglas Melo; Vitalini, Sara; Kręgiel, Dorota; Antolak, Hubert; Sharifi-Rad, Mehdi; Silva, Nathália Cristina Cirone (2018-11-01). "Tagetes spp. Essential Oils and Other Extracts: Chemical Characterization and Biological Activity". Molecules (Basel, Switzerland). 23 (11): 2847. doi:10.3390/molecules23112847. ISSN 1420-3049. PMC 6278309. PMID 30388858.