Ricarda Riina

Vicedirectora de Jardín y Cultura Científica.
Cientifíca titular.
Especialidad: Sistemática, evolución y biogeografía de Euphorbiaceae; florística Neotropical.
Perfil profesional

My research is focused on the systematics and evolution of species-rich plant lineages. I use molecular phylogenetics to address questions about evolutionary history, morphological evolution, and to unravel patterns of species diversification and geographic distribution of the mega-diverse and widely distributed genera Croton and Euphorbia (Euphorbiaceae).

I am interested in understanding the intrinsic and extrinsic factors involved in the process of species diversification and whether key adaptations or/and ecological opportunities have triggered explosive diversification events in the evolutionary history of those lineages.

Other questions that I am starting to address are related to the evolution of floral morphology in Croton and its possible relation to changes in pollination systems. Finally, part of my work also involves the construction of taxonomic classifications of lineages within Euphorbiaceae using a phylogenetic framework but considering morphological patterns.  In doing so, I also conduct taxonomic revisions of selected groups, contribute to regional floras and checklists, and describe new taxa.

Artículos científicos
2024Jiménez-Mejías, P., Manzano, S., Gowda, V., Krell, F.T., Lin, M.Y., Martín-Bravo, S., Martín-Torrijos, L., Nieto Feliner, G., Mosyakin, S.L., Naczi, R.F.C., Acedo, C., Álvarez, I., Crisci, J.V., Luceño Garcés, M., Manning, J., Moreno Saiz, J.C., Muasya, A.M., Riina, R., Sánchez Meseguer, A., Sánchez-Mata, D. and 1543 additional coauthors (2024). Protecting stable biological nomenclatural systems enables universal communication: A collective international appeal. BioScience [in press]. Open Access
2024Rincón-Barrado, M., Villaverde, T., Perez, M.F., Sanmartín,I., Riina, R. (2024). The sweet tabaiba or there and back again: phylogeographical history of the Macaronesian Euphorbia balsamifera. Annals of Botany 133(5-6)::883-903. Open Access
2024Coello, A.J., Vargas, P., Cano, E., Riina, R., Fernández-Mazuecos, M. (2024). Phylogenetics and phylogeography of Euphorbia canariensis reveal an extreme Canarian-Asian disjunction but limited inter-island colonization. Plant Biology 26(3):398-414. Open Access
2023Ferrer-Gallego, P.P., Riina, R. (2023). Neotypification of the sweet tabaiba, Euphorbia balsamifera (Euphorbiaceae). Phytotaxa 630(2):159-162. Open Access
2023Pinto-Silva, N.P., de Souza, K.F., Silva, O.L.M., Vitarelli, N.C., Pereira, A.P.N., Soares, D.A., Sodré, R.C., Medeiros, D., Caruzo, M.B.R., Carneiro Torres, D.S., da Silva, M.J., Meira, R.M.S.A., Riina, R., Feio, AC. (2023). Trichomes in the megadiverse genus Croton (Euphorbiaceae): a revised classification, identification parameters and standardized terminology. Botanical Journal of the Linnean Society 203(1):37-49. Open Access
2023Sodré, R.C., da Silva, M.J., Caruzo, M.B.R., Riina R. (2023). Croton restingae sp. nov. (Euphorbiaceae), a new species of section Adenophylli from the state of Rio de Janeiro, Brazil, and its phylogenetic relationships. European Journal of Taxonomy 864:104-116. Open Access
2023Külkamp, J., Riina, R., Ramírez-Amezcua, Y., Iganci, J.R.V., Cordeiro, I., González-Paramo, R., Lara-Cabrera, S., Baumgratz, J.F.A. (2023). Systematics of Ditaxinae and Related Lineages within the Subfamily Acalyphoideae (Euphorbiaceae) Based on Molecular Phylogenetics. Biology 12(2):173. Open Access
2022Sphaerobolus stellatus: an unusual gasteroid fungus (Basidiomycota) from Northeastern Brazil. Arrudea. A revista do Jardim Botânico do Recife. 8: 30-37.
2022Barberá, P., Lachenaud, O., Riina, R. (2022). A new species of Paranecepsia (Euphorbiaceae-Acalyphoideae) from Madagascar and its relationships among the ‘alchorneoids clade’. European Journal of Taxonomy 834(1):22-37. Open Access
2022Meseguer, A.S., Michel, A., Fabre, P.-H., Pérez-Escobar, O.A., Chomicki, G., Riina, R., Antonelli, A., Antoine, P.-O., Delsuc, F., Condamine, F.L. (2022). Diversification dynamics in the Neotropics through time, clades and biogeographic regions. eLife 11:e74503. Open Access
2022Peraza, G.A., Koenen, E.J.M., Riina, R., Hughes, C.E., Ringelberg, J.J., Fernández-Concha, G.C., Morillo, I.M.R., Itza, L.L.C., Tamayo-Cen, I., Prado, J.H.R., Cornejo, X., Mattapha, S., de Stefano, R.D. (2022). Re-establishment of the genus Pseudalbizzia (Leguminosae, Caesalpinioideae, mimosoid clade): the New World species formerly placed in Albizia. PhytoKeys 205:371-400. Open Access
2022Pereira, A.P.N., Riina, R., Caruzo, M.B.R. (2022). Croton (Euphorbiaceae) of the Brazilian state of Paraná: an annotated checklist, species distribution, and identification key. Phytotaxa 570(3):231-274. DOI
2022Pereira, A.P.N., Riina, R., Valduga, E., Caruzo, M.B.R. (2022). A new species of Croton (Euphorbiaceae) endemic to the Brazilian Pampa and its phylogenetic affinities. Plant Systematics and Evolution 308(2):14. DOI
2021da Silva, M.J., Feitosa, G.L., Riina, R. (2021). Seek and you shall find: rediscovery of the Brazilian Euphorbia burchellii (Euphorbiaceae) after nearly a century and a half, with a conspectus of Euphorbia sect. Anisophyllum species in the state of Goiás, Brazil. Phytotaxa 479(1):83-94. DOI
2021da Silva, O.L.M., Braun, P., Riina, R., Cordeiro, I. (2021). Three new species of Euphorbia subgenus Chamaesyce (Euphorbiaceae) endemic to Brazil. European Journal of Taxonomy 733:72-86. DOI
2021Masa-Iranzo, I., Sanmartín, I., Caruzo, M.B.R., Riina, R. (2021). Skipping the Dry Diagonal: spatio-temporal evolution of Croton section Cleodora (Euphorbiaceae) in the Neotropics. Botanical Journal of the Linnean Society 197(1):61-84. Open Access
2021Moonlight, P.W., Banda-R, K., Phillips, O.L., Dexter, K.G., Pennington, R.T., Baker, T.R., De Lima, H.C, Fajardo, L., González-M., R., Linares-Palomino, R., Lloyd, J.. Nascimento, M., Prado, D., Quintana, C., Riina, R., Rodríguez M., G.M., Villela, D.M., Aquino, A.C.M M., Arroyo, L., Bezerra, C., Tadeu Brunello, A., Brienen, R.J.W., Cardoso, D., Chao, K.-J., Cotta Coutinho, Í.A., Cunha, J., Domingues, T., do Espírito Santo, M.M., Feldpausch, T.R., Ferreira Fernandes, M., Goodwin, Z.A., Jiménez, E.M., Levesley, A., Lopez-Toledo, L., Marimon, B., Miatto, R.C., Mizushima, M., Monteagudo, A., Beserra de Moura, M.S., Murakami, A., Neves, D., Nicora Chequín, R., de Sousa Oliveira, T.C., de Oliveira, E.A., de Queiroz, L.P., Pilon, A., Marques Ramos, D., Reynel, C., Rodrigues, P.M.S., Santos, R., Särkinen, T., da Silva, V.F., Souza, R.M.S., Vasquez, R., Veenendaal, E. (2021). Expanding tropical forest monitoring into Dry Forests: The DRYFLOR protocol for permanent plots. Plants People Planet 3(3):295-300. Open Access
2021Riina, R., Villaverde, T., Rincón-Barrado, M., Molero, J., Sanmartín, I. (2021). More than one sweet tabaiba: Disentangling the systematics of the succulent dendroid shrub Euphorbia balsamifera. Journal of Systematics and Evolution 59(3):490-503. DOI
2021Rincón-Barrado, M., Olsson, S., Villaverde, T., Moncalvillo, B., Pokorny, L., Forrest, A., Riina, R., Sanmartín, I. (2021). Ecological and geological processes impacting speciation modes drive the formation of wide-range disjunctions within tribe Putorieae (Rubiaceae). Journal of Systematics and Evolution 59(5):915-934. Open Access
2021Vitarelli, N.C., Somavilla, N., Ferrari, F.B., Silva, M.R.E., Soares, E.M., Silva, O.L.M.D., Riina, R. (2021). The Amazonian Croton mollis (Euphorbiaceae): morphology and leaf anatomy help to understand its preference for the extreme igapó habitat. Flora 281:151878. Open Access
2020Marques Da Silva, O.L., Antar, G.M., Riina, R., Cordeiro, I. (2020). Euphorbia adenoplicata, a New Species of Euphorbia sect. Crossadenia from Brazil. Systematic Botany 45(1):131-136. DOI
2020Mateo-Ramírez L., Riina R. (2020). Croton calcareus: A new species of dragon's blood (Euphorbiaceae) from dry forest in the state of Chiapas, Mexico. European Journal of Taxonomy 657:1-14. Open Access
2020Silva, O.L.M., Riina, R., Cordeiro, I. (2020). Phylogeny and biogeography of Astraea with new insights into the evolutionary history of Crotoneae (Euphorbiaceae). Molecular Phylogenetics and Evolution 145:106738. DOI
2020Thaowetsuwan, P., Ritchie, S., Riina, R., Ronse de Craene, L. (2020). Divergent Developmental Pathways Among Staminate and Pistillate Flowers of Some Unusual Croton (Euphorbiaceae). Frontiers in Ecology and Evolution 8:253. Open Access
2019Chen, S.-C., Pahlevani, A.H., Malíková, L., Riina, R., Thomson, F.J., Giladi, I. (2019). Trade-off or coordination? Correlations between ballochorous and myrmecochorous phases of diplochory. Functional Ecology 33(8):1469-1479. DOI
2019Da Silva, O.L.M., Dias, P., Riina, R., Cordeiro, I. (2019). Redelimitation of Astraea lobata (Euphorbiaceae) and other taxonomic rearrangements in Astraea. Phytotaxa 404(4):127-136. DOI
2019de Farias, S.Q., Medeiros, D., Riina, R. (2019). A new species of dragon's blood Croton (Euphorbiaceae) from Serra dos órgãos (Rio de Janeiro, Brazil). PhytoKeys 126:13-24. Open Access
2018Feio, A.C., Meira, R.M.S.A., Riina, R. (2018). Leaf anatomical features and their implications for the systematics of dragon's blood, Croton section Cyclostigma (Euphorbiaceae). Botanical Journal of the Linnean Society 187(4):614-632. DOI
2018Feio, A.C., Ore-Rengifo, M.I., Berry, P.E., Riina R. (2018). Four New Species of Dragon's Blood Croton (Euphorbiaceae) from South America. Systematic Botany 43(1):212-220. DOI
2018Riina, R., Berry, P.E., Secco, R.D.S., Meier, W., Caruzo, M.B.R. (2018). Reassessment of Croton sect. Cleodora (Euphorbiaceae) points to the Amazon Basin as its main center of diversity. Annals of the Missouri Botanical Garden 103(3):330-349. DOI
2018Villaverde, T., Pokorny, L., Olsson, S., Rincón-Barrado, M., Johnson, M.G., Gardner, E.M., Wickett, N.J., Molero, J., Riina, R., Sanmartín, I. (2018). Bridging the micro- and macroevolutionary levels in phylogenomics: Hyb-Seq solves relationships from populations to species and above. New Phytologist 220:636-650. Open Access
2017Arévalo, R., van Ee, B.W., Riina, R., Berry, P.E., Wiedenhoeft, A.C. (2017). Force of habit: shrubs, trees and contingent evolution of wood anatomical diversity using Croton (Euphorbiaceae) as a model system. Annals of Botany 119(4):563-579. DOI
2017Cardoso, D., Särkinen, T., Alexander, S., Amorim, A.M., Bittrich, V., Celis, M., Daly, D.C., Fiaschi, P., Funk, V.A., Giacomin, L.L., Goldenberg, R., Heiden, G., Iganci, J., Kelloff, C.L., Knapp, S., Cavalcante de Lima, H., Machado, A.F.P., dos Santos, R.M., Mello-Silva, R., Michelangeli, F.A., Mitchell, J., Moonlight, P., Rodrigues de Moraes, P.L., Mori, S.A., Nunes, T.S., Pennington, T.D., Pirani, J.R., Prance, G.T., Paganucci de Queiroz, L., Rapini, A., Riina, R., Rincon, C.A.V., Roque, N., Shimizu, G., Sobral, M., Stehmann, J.R., Stevens, W.D., Taylor, C.M., Trovó, M., van den Berg, C., van der Werff, H., Viana, P.L., Zartman, C.E., Forzza, R.C. (2017). Amazon plant diversity revealed by a taxonomically verified species list. PNAS 114(40):10695-10700. Open Access
2017dos Santos, R.F., Riina, R., Caruzo, M.B.R. (2017). Diversity of arborescent lineages of Crotoneae (Euphorbiaceae) in the Brazilian Atlantic Rain Forest. Plant Systematics and Evolution 303(10):1467-1497. Open Access
2017DRYFLOR, Banda-R, K., Delgado-Salinas, A., Dexter, K.G., Galetti, L., Linares-Palomino, R., Maturo, H.M., Mogni, V., Oakley, L., Olivera-Filho, A., Prado, D., Quintana, C., Riina, R., Särkinen, T. (2017). Forest conservation: Remember Gran Chaco - Response. Science 355(6324):465-466. DOI
2017DRYFLOR, Banda-R, K., Delgado-Salinas, A., Dexter, K.G., Linares-Palomino, R., Olivera-Filho, A., Prado, D., Quintana, C., Riina, R. (2017). Forest conservation: Humans' handprints - Response. Science 355(6324):467. DOI
2017Nieto Feliner G., Álvarez I., Fuertes-Aguilar J., Heuertz M., Marques I., Moharrek F., Piñeiro R., Riina R., Rosselló J.A., Soltis P.S., Villa-Machío I. (2017). Is homoploid hybrid speciation that rare? An empiricist's view. Heredity 118:513-516. DOI
2017Pereira, A.D.P.N., Riina, R., Caruzo, M.B.R. (2017). A new species of Croton section Lamprocroton (Euphorbiaceae) from Southern Brazil. Systematic Botany 42(4):830-834. Open Access
2017Pereira, A.d.P.N., Riina, R., Caruzo, M.B.R. (2017). Rediscovery and sectional placement of Croton ichthygaster (Euphorbiaceae), a rare species from Southern Brazil. Phytotaxa 309(1):79-84. DOI
2016Banda, K.R., Delgado-Salinas, A., Dexter, K.G., Linares-Palomino, R., Oliveira-Filho, A., Prado, D., Pullan, M., Quintana, C., Riina, R., Rodríguez, G.M., Weintritt, J., Acevedo-Rodríguez, P., Adarve, J., Álvarez, E., Aranguren, A.B., Arteaga, J.C., Aymard, G., Castaño, A., Ceballos-Mago, N., Cogollo, Á., Cuadros, H., Delgado, F., Devia, W., Dueñas, H., Fajardo, L., Fernández, Á., Fernández, M.Á., Franklin, J., Freid, E.H., Galetti, L.A., Gonto, R., González, R.M., Graveson, R., Helmer, E.H., Idárraga, Á., López, R., Marcano-Vega, H., Martínez, O.G., Maturo, H.M., McDonald, M., McLaren, K., Melo, O., Mijares, F., Mogni, V., Molina, D., Moreno, N.D.P., Nassar, J.M., Neves, D.M., Oakley, L.J. (2016). Plant diversity patterns in neotropical dry forests and their conservation implications. Science 353(6306):1383-1387. DOI
2016Caruzo M.B.R., Dos Santos R.F., Feio A.C., Meira R.M.S.A., Riina R. (2016). Redefinition of Croton macrobothrys (Euphorbiaceae), a tree species from the Brazilian Atlantic Forest, with the description of a new subspecies. Phytotaxa 273(1):51-58. DOI
2016Cheek M., Challen G., Lebbie A., Banks H., Barberá P., Riina R. (2016). Discovering Karima (Euphorbiaceae), a new crotonoid genus from west tropical Africa long hidden within Croton. PLoS ONE 11(4):e0152110. Open Access
2016Feio A.C., Riina R., Meira R.M.S.A. (2016). Secretory structures in leaves and flowers of two dragon's blood croton (Euphorbiaceae): New evidence and interpretations. International Journal of Plant Sciences 177(6):511-522. DOI
2016Riina, R., Freitas dos Santos, R., Rossi Caruzo, M.B. (2016). Croton sapiifolius Müll.Arg.: a new occurrence for the state of Espírito Santo, Brazil. Hoehnea 43:529-531. Open Access
2016Rumeu B., Vargas P., Riina R. (2016). Incipient radiation versus multiple origins of the Galápagos Croton scouleri (Euphorbiaceae). Journal of Biogeography 43(9):1717-1727. DOI
2016Vitarelli N.C., Riina R., Cassino M.F., Meira R.M.S.A. (2016). Trichome-like emergences in Croton of Brazilian highland rock outcrops: Evidences for atmospheric water uptake. Perspectives in Plant Ecology, Evolution and Systematics 22.23-35. DOI
2015Barberá, P., Riina, R., Velayos, M. (2015). A new species of Grossera (Euphorbiaceae) from Equatorial Guinea. Phytotaxa 221(2):175-180. DOI
2015Luján, M., León, Y., Riina, R. (2015). Sinopsis de Croton (Euphorbiaceae) en los Andes de Mérida, Venezuela. Caldasia 37(1):73-90. Open Access
2015Pokorny, L., Riina, R., Mairal, M., Meseguer, A.S., Culshaw, V., Cendoya, J., Serrano, M., Carbajal, R., Ortiz, S., Heuertz, M., Sanmartín, I. (2015). Living on the edge: Timing of Rand Flora disjunctions congruent with ongoing aridification in Africa. Frontiers in Genetics 6(MAY):154. Open Access
2015Riina, R. (2015). Growing knowledge: an overview of Seed Plant diversity in Brazil. Rodriguésia 66(4):1085-1111.
2015Riina, R., Cumbicus, N., Feio, A.C., Cerón, C.E., Meira, R.M.S.A., Berry, P.E. (2015). A new species of dragon's blood Croton (Euphorbiaceae) from South America with singular inflorescences. Webbia 70(1):187-192. DOI
2015Riina, R., Marques, O., Hurbath, F. (2015). Euphorbia from Brazil: the succulent section Brasilienses. Euphorbia World 11(3): 5-11. Open Access
2015Vitarelli, N.C., Riina, R., Caruzo, M.B., Cordeiro, I., Fuertes-Aguilar, J., Meira, R.M. (2015). Foliar secretory structures in Crotoneae (Euphorbiaceae): Diversity, anatomy, and evolutionary significance. American Journal of botany 102(6):833-847. DOI
2014Givnish, T.J., Barfuss, M.H.J., Ee, B.V., Riina, R., Schulte, K., Horres, R., Gonsiska, P.A., Jabaily, R.S., Crayn, D.M., Smith, J.A.C., Winter, K., Brown, G.K., Evans, T.M., Holst, B.K., Luther, H., Till, W., Zizka, G., Berry, P.E., Sytsma, K.J. (2014). Adaptive radiation, correlated and contingent evolution, and net species diversification in Bromeliaceae. Molecular Phylogenetics and Evolution 71(1):55-78. DOI
2014Horn, J.W., Xi, Z., Riina, R., Peirson, J.A., Yang, Y., Dorsey, B.L., Berry, P.E., Davis, C.C., Wurdack, K.J. (2014). Evolutionary bursts in Euphorbia (Euphorbiaceae) are linked with photosynthetic pathway. Evolution 68(12):3485-3504. DOI
2014Pahlevani, A.H., Riina, R. (2014). Synopsis of Euphorbia subgen. Esula sect. Helioscopia (Euphorbiaceae) in Iran with the description of Euphorbia mazandaranica sp. nov.. Nordic Journal of Botany 32(3):257-278. DOI
2014Peirson, J., Riina, R., Mayfield, M.H., Ferguson, C.J., Urbatsch,L.E., Berry, P.E. (2014). Phylogenetics and taxonomy of the New World leafy spurges, Euphorbia section Tithymalus (Euphorbiaceae). Botanical Journal of the Linnean Society 175:191-228. DOI
2014Riina, R., Carneiro-Torres, D.S., Peirson, J.A., Berry, P.E., Cordeiro, I. (2014). Further support for the crotoneae phylogeny: A new species of brasiliocroton (euphorbiaceae) based on morphological, geographical, and molecular evidence. Systematic Botany 39(1):227-234. DOI
2014Riina, R., Vigo, M.A., Cerón, C.E. (2014). Croton condorensis: An enigmatic new species of Euphorbiaceae from southern Ecuador. Phytotaxa 164(2):154-158. DOI
2013Chávez, K., Compagnone, R.S., Riina, R., Briceño, A., González, T., Squitieri, E., Landaeta, C., Soscún, H., Suárez, A.I. (2013). Crotofolane diterpenoids from Croton caracasanus. Natural product communications 8(12):1679-1682. Open Access
2013Dorsey, B.L., Haevermans, T., Aubriot, X., Morawetz, J.J., Riina, R., Steinmann, V.W., Berry, P.E. (2013). Phylogenetics, morphological evolution, and classification of Euphorbia subgenus Euphorbia. Taxon 62:291-315. DOI
2013Peirson, J.A., Bruyns, P.V., Riina, R., Morawetz, J.J., Berry, P.E. (2013). A molecular phylogeny and classification of the largely succulent and mainly African Euphorbia subg. Athymalus (Euphorbiaceae). Taxon 62(6):1178-1199. DOI
2013Riina, R., Peirson, J.A., Geltman, D.V., Molero, J., Frajman, B., Pahlevani, A., Barres, L., Morawetz, J.J., Salmaki, Y., Zarre, S., Kryukov, A., Bruyns, P.V., Berry, P.E. (2013). A worldwide molecular phylogeny and classification of the leafy spurges, Euphorbia subgenus Esula (Euphorbiaceae). Taxon 62:316-342. DOI
2012Carneiro-Torres, D.S., Cordeiro, I., Giulietti, A.M., Riina, R. (2012). Euphorbia flaviana, a new species from the inselbergs of Bahia (Brazil) and lctotypification of E. crossadenia. Systematic Botany 37:688-693. DOI
2012Grande, J.R., Kallunki, J., Arbo, M.M., Berry, P.E., Huber, O., Riina, R. (2012). Botanical novelties from Sierra de Maigualida, Southern Venezuela. II. Anales del Jardin Botanico de Madrid 69:7-19. Open Access
2012Horn, J.W., van Ee, B.W., Morawetz, J.J., Riina, R., Steinmann, V.W., Berry, P.E., Wurdack, K.J. (2012). Phylogenetics and the evolution of major structural characters in the giant genus Euphorbia L. (Euphorbiaceae). Molecular Phylogenetics and Evolution 63:305-326. DOI
2012Yang, Y., Riina, R., Morawetz, J.J., Haevermans, T., Aubriot, X., Berry, P.E. (2012). Molecular phylogenetics and classification of Euphorbia subgenus Chamaesyce (Euphorbiaceae). Taxon 61:764-789. DOI
2011Berry, P.E., Riina, R., Peirson, J. (2011). Typification and synonymy of the species of Euphorbia subgenus Esula native to the United States and Canada.. Journal of the Botanical Research Institute of Texas 5:143-151. DOI
2011Carneiro-Torres, D.S., Cordeiro, I., Giulietti, A.M., Berry, P.E., Riina, R. (2011). Three new species of Croton (Euphorbiaceae s.s.) from the Brazilian Caatinga. Brittonia 63:122-132. DOI
2011Caruzo, M.B.R., van Ee, B.W., Cordeiro, I., Berry, P.E., Riina, R. (2011). Molecular phylogenetics and character evolution of the "sacaca" clade: Novel relationships of Croton section Cleodora (Euphorbiaceae). Molecular Phylogenetics and Evolution 60:193-206. DOI
2011Pahlevani, A., Geltman, D.V., Riina, R. (2011). Taxonomic revision of euphorbia subsect. Myrsiniteae in Iran. Annales Botanici Fennici 48:483-493. DOI
2011Riina, R., Berry, P.E. (2011). Croton maasii (Euphorbiaceae), a new species from the Western Amazon region. Blumea 56:146-148.
2011van Ee, B.W., Riina, R., Berry, P.E. (2011). A revised infrageneric classification and molecular phylogeny of new world croton (Euphorbiaceae). Taxon 60:791-823. DOI
2010Riina, R., Berry, P.E. (2010). Two new South American species of Croton (Euphorbiaceae) and their phylogenetic affinities | Dos nuevas especies suramericanas de Croton (Euphorbiaceae) y sus afinidades filogenéticas. Anales del Jardin Botanico de Madrid 67:23-27. Open Access
2010Riina, R., van Ee, B., Wiedenhoeft, A.C., Cardozo, A., Berry, P.E. (2010). Sectional rearrangement of arborescent clades of Croton (Euphorbiaceae) in South America: Evolution of arillate seeds and a new species, Croton domatifer. Taxon 59:1147-1160. DOI
2009de Stefano, R.D., Stauffer, F., Riina, R., Huber, O., Aymard, G., Hokche, O., Berry, P.E., Meier, W. (2009). Assessment of vascular plant diversity and endemism in Venezuela. Candollea 64(2):203-212.
2009Esser, H.-J., Berry, P.E., Riina, R. (2009). EuphORBia: A global inventory of the spurges. Blumea 54(1-3):11-12. Open Access
2009Riina, R., Berry, P.E., van Ee, B.W. (2009). Molecular phylogenetics of the dragon's blood Croton section Cyclostigma (Euphorbiaceae): A polyphyletic assemblage unraveled. Systematic Botany 34(2):360-374. DOI
2009Wiedenhoeft, A.C., Riina, R., Berry, P.E. (2009). "Ray-Intrusive" Laticifers in Species of Croton Section Cyclostigma (Euphorbiaceae). IAWA Journal 30(2):135-148. DOI
2008Caruzo, M.B.R., Riina, R., Cordeiro, I., Berry, P.E. (2008). Croton campanulatus (Euphorbiaceae s.s.), a new species from the Brazilian Atlantic rain forest. Brittonia 60(3):261-264. Open Access
2008van Ee, B.W., Berry, P.E., Riina, R., Gutiérrez Amaro, J.E. (2008). Molecular phylogenetics and biogeography of the Caribbean-centered Croton subgenus Moacroton (Euphorbiaceae s.s.). Botanical Review 74(1):132-165. Open Access
2007Riina, R., Berry, P.E., Cornejo, X. (2007). A new species of "sangre de drago" (Croton section Cyclostigma, Euphorbiaceae) from coastal Ecuador. Brittonia 59(1):97-101. DOI
2006León, B., Riina, R., Berry, P. (2006). Euphorbiaceae endemic to Peru [Euphorbiaceae endémicas del Perú]. Revista Peruana de Biologia 13(2):295s-301s.
2005Berry, P.E., Hipp, A.L., Wurdack, K.J., van Ee, B., Riina, R. (2005). Molecular phylogenetics of the giant genus Croton and tribe Crotoneae (Euphorbiaceae sensu stricto) using ITS and trnL-trnF DNA sequence data. American Journal of Botany 92(9):1520-1534. Open Access
Capítulos de libros
2023Grande-A, J.R,, Huber, O., Riina, R. (2023). Plant Diversity and Endemism of the White-Sand Open Vegetation in the Lowlands of the Amazonas State, Venezuela. In: Zinck, J.A., Huber, O., García Montero, P., Medina, E. (eds) Psammic Peinobiomes. Ecological Studies, vol 247. Springer, Cham. pp. 445-518. DOI
2016Murillo-A., J., Esser, H.-J., Berry, P., Riina, R., Van Ee, B., Steinmann, V. (2016). Especies nativas, naturalizadas o adventicias. Angiospermas. Euphorbiaceae.. In: Bernal, R., Robbert Gradstein, S., Celis, M. (eds.). Catálogo de plantas y líquenes de Colombia. Vol. I. Universidad Nacional de Colombia. pp. 1223-1246.
2016Berry, P.E., Peirson, J.A., Morawetz, J.J., Steinmann, V.W., Riina, R., Yang, Y., Geltman, D., Cacho, N.I. (2016). Euphorbia. In: Boufford, D.E. et al. (eds.). Flora of North America North of Mexico, vol. 12. Magnoliophyta: Vitaceae to Garryaceae. Oxford University Press USA. pp. 237-324.
2011Cerón, C., Riina, R., Santiana, J., Tye, A. (2011). Euphorbiaceae. In: León-Yánez, S., Valencia, R., Pitman, N., Endara, L., Ulloa Ulloa ,C., Navarrete, H. (eds.). 2011. Libro rojo de las plantas endémicas del Ecuador, 2ª edición. Publicaciones del Herbario QCA, Pontificia Universidad Católica del Ecuador, Quito.. pp.317-325. Open Access
2019Riina, R., Berry, P.E., Hube, O., Michelangeli, F.A. (2019). Vascular Plants and Bryophytes. In: Rull, V., Vegas-Vilarrúbia, T., Huber, O., Señaris, C. (eds.) Biodiversity of Pantepui. The Pristine "Lost World" of the Neotropical Guiana Highlands. Academic Press; Elsevier. pp.121-147.
2011Riina, R., Berry, P.E. (coords.). (2011). Euphorbia planetary biodiversity inventory database... Open Access


DRAGORED. Red científica para incrementar el conocimiento biológico de los árboles "sangre de drago” andino-amazónicos con miras al uso sostenible de su látex.
2023-2025. Programa LincGlobal, CSIC. (IP: R. Riina).

ODDMANOUT. Tackling the Old Riddle of the Low Plant Diversity in Tropical Africa.
2020-2024. Miinisterio de Ciencia e Innovación. PI: Isabel Sanmartín. Co-PI: Ricarda Riina. Web del proyecto

EUGENIA. La euphorbia y el tartaguero: Hacia un enfoque genomico en biología de la conservación comparando especies invasoras y amenazadas.
2017-2019. Fundación BBVA. PI: Isabel Sanmartín. Co-PI: Ricarda Riina. Web del proyecto

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