Dichrocephala integrifolia (Astereae, Asteraceae), a new exotic genus and species for Mexico and second record for the New World

keywords: Ecological niche modeling, exotic plants, flora of Chiapas, Grangeinae, weeds


Background: Dichrocephala is an Old-World genus of the tribe Astereae within the family Asteraceae. One species, D. integrifolia, has been recently reported as introduced in the New World from a pair of collections from Guatemala. During field work in the state of Chiapas in southern Mexico, the species was found and collected. This is the first record of both the genus and species in Mexico and the second record for these taxa in the Americas.

Question: Can D. integrifolia occur in more areas in the New World besides those known from Guatemala and Chiapas?

Studied species: Dichrocephala integrifolia

Study site and dates: Mexico, Central America, and the Caribbean.

Methods: An ecological niche model was made and it was projected into the New World.

Results: The ecological niche model predicts the records of D. integrifolia in the New World in addition to other ecologically suitable areas, mostly in pine-oak forests in Mexico and Central America and zones with humid mountain and pine forest in the Caribbean. Moreover, a morphological description and illustrations of the species are provided to help with its identification.

Conclusions: It is desirable to avoid the further spreading of D. integrifolia in the New World. Although this species is not considered as invasive, it seems to have a high dispersal potential and the ecological niche modelling indicates larger regions in the Americas that might be affected.


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<em>Dichrocephala integrifolia</em> (Astereae, Asteraceae), a new exotic genus and species for Mexico and second record for the New World


Aiello?Lammens ME, Boria RA, Radosavljevic A, Vilela B, Anderson RP. 2015. spThin: A R package for spatial thinning of species occurrence records for use in ecological niche models. Ecography 38: 541-545. DOI: https://doi.org/10.1111/ecog.01132

Baldwin RA. 2009. Use of maximum entropy modeling in wildlife research. Entropy 11: 854-866. DOI: https://doi.org/10.3390/e11040854

Brouillet L, Lowrey TK, Urbatsch L, Karaman-Castro V, Sancho G, Wagstaff S, Semple JC. 2009. Astereae. In: Funk VA, Susanna A, Stuessy TF, Bayer RJ, eds. Systematics, Evolution and Biogeography of Compositae. Vienna: IAPT, pp. 589-629. ISBN: 9783950175431

Chen Y. Brouillet L. 2011. Dichrocephala. In: Wu ZY, Raven PH, Hong DY, eds. Flora of China Volume 20-21 (Asteraceae). Beijing-St. Louis, Missouri: Science Press-Missouri Botanical Garden Press, pp. 550-551. ISBN: 9781935641070

Fick SE, Hijmans RJ. 2017. WorldClim 2: new 1?km spatial resolution climate surfaces for global land areas. International Journal of Climatology 37: 4302-4315. DOI: https://doi.org/10.1002/joc.5086

GBIF [Global Biodiversity Facility]. 2020. GBIF Occurrence Download DOI: https://doi.org/10.15468/dl.8bxrrj (Accessed June 29, 2020)

Hutchinson J, Dalziel JM. 1963. Dichrocephala. In: Hepper FN, ed. Flora of West Tropical Africa, Vol II. London: Crown Agents for Overseas Governments & Administrations, pp. 1354-1355. ISBN: 9780947643751

Kass JM, Vilela B, Aiello?Lammens ME, Muscarella R, Merow C, Anderson RP. 2018. Wallace: A flexible platform for reproducible modeling of species niches and distributions built for community expansion. Methods in Ecology and Evolution 9: 1151-1156. DOI: https://doi.org/10.1111/2041-210X.12945

Morales NS, Fernández IC, Baca-González V. 2017. MaxEnt’s parameter configuration and small samples: are we paying attention to recommendations? A systematic review. PeerJ 5: e3093. DOI: https://doi.org/10.7717/peerj.3093

Muscarella R, Galante PJ, Soley?Guardia M, Boria RA, Kass JM, Uriarte M, Anderson RP. 2014. ENM eval: An R package for conducting spatially independent evaluations and estimating optimal model complexity for Maxent ecological niche models. Methods in Ecology and Evolution 5: 1198-1205. DOI: https://doi.org/10.1111/2041-210X.12261

Nesom G, Robinson H. 2007. Tribe Astereae. In: Kubitzki K, ed. The Families and Genera of Vascular Plants, Vol. 8 Flowering plants. Eudicots. Asterales. Berlin: Springer, pp. 284-342. ISBN: 978-3-540-31050-1

Olson DM, Dinerstein E, Wikramanayake ED, Burgess ND, Powell GVN, Underwood EC, D'Amico JA, Itoua I, Strand HE, Morrison JC, Loucks CJ, Allnutt TF, Ricketts TH, Kura Y, Lamoreux JF, Wettengel WW, Hedao P, Kassem KR. 2001. Terrestrial ecoregions of the world: a new map of life on Earth. Bioscience 51: 933-938. DOI: https://doi.org/10.1641/0006-3568(2001)051[0933:TEOTWA]2.0.CO;2

Peterson AT. 2003. Predicting the geography of species’ invasions via ecological niche modeling. The Quarterly Review of Biology 78: 419-433. https://doi.org/10.1086/378926

Peterson AT, Pape? M, Eaton M. 2007. Transferability and model evaluation in ecological niche modeling: a comparison of GARP and Maxent. Ecography 30: 550-560. DOI: https://doi.org/10.1111/j.0906-7590.2007.05102.x

Pruski J. 2011. Studies of Neotropical Compositae-III. Dichrocephala integrifolia (Astereae: Grangeinae) in Guatemala, an exotic genus and species new to the Americas. Phytoneuron 65: 1-9.

Pruski J. 2018. Dichrocephala. In: Davidse G, Sousa-Sánchez M, Knapp S, Chiang-Cabrera F, eds. Flora Mesoamericana. 5(2) Asteraceae. St. Louis Missouri: Missouri Botanical Garden, pp. 608. ISBN: 9780915279982

Spellenberg R, Zucker N. 2019. The sunflower family: A guide to the Family Asteraceae in the Contiguous United States. Sida, Bot. Misc. 52. Forth North, Texas: Botanical Research Institute of Texas. ISBN: 13-978-1889878-65-2

Villaseñor JL. 2016. Checklist of the native vascular plants of Mexico. Revista Mexicana de Biodiversidad 87: 559-902. DOI: http://dx.doi.org/10.1016/j.rmb.2016.06.017

Villaseñor JL. 2018. Diversidad y distribución de la familia Asteraceae en México. Botanical Sciences 96: 332-358. DOI: http://dx.doi.org/10.17129/botsci.1872

Villaseñor JL, Espinosa-García FJ. 2004. The alien flowering plants of Mexico. Diversity and Distributions 10: 113-123. https://doi.org/10.1111/j.1366-9516.2004.00059.x

Villaseñor JL, Ortiz E, Beutelspacher CR, Gómez-López JA. 2013a. La familia Asteraceae en el municipio de San Cristóbal de Las Casas, Chiapas, México. Lacandonia 7: 31-55.

Villaseñor JL, Ortiz E, Hinojosa-Espinosa O, Segura-Hernández G. 2013b. Especies de la familia Asteraceae exóticas a la flora de México. México, DF: Secretaría de Agricultura, Ganadería, Desarrollo Rural, Pesca y Alimentación, Servicio Nacional de Sanidad, Inocuidad y Calidad Agroalimentaria, Consejo Nacional Consultivo Fitosanitario, Instituto de Biológia de la Universidad NacionalAutónoma de Méxicoy Asociación Méxicana de la Ciencia de la Maleza.

Warren DL, Seifert SN. 2011. Ecological niche modeling in Maxent: the importance of model complexity and the performance of model selection criteria. Ecological applications 21: 335-342. DOI: https://doi.org/10.1890/10-1171.1

How to Cite
Hinojosa-Espinosa, O., Potter, D., Ishiki, M., Ortiz, E., & Villaseñor, J. L. (2021). Dichrocephala integrifolia (Astereae, Asteraceae), a new exotic genus and species for Mexico and second record for the New World. Botanical Sciences, 99(3), 708-716. https://doi.org/10.17129/botsci.2754