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Issue: Vol. 763 No. 3: 24 Jun. 2026
Type: Article
Published: 2026-06-24
DOI: 10.11646/phytotaxa.763.3.5
Page range: 263-272
Abstract views: 0
PDF downloaded: 0

A long-term permanent forest plot reveals a remarkable new species of Roucheria (Linaceae) from the Brazilian Atlantic Rainforest

Programa de Pós-Graduação em Botânica; Escola Nacional de Botânica Tropical; Instituto de Pesquisas Jardim Botânico do Rio de Janeiro; Rio de Janeiro; Brazil
Universidade Estadual de Santa Cruz; UESC; Departamento de Ciências Biológicas; Ilhéus; Bahia; Brazil
Programa de Pós-Graduação em Botânica; Escola Nacional de Botânica Tropical; Instituto de Pesquisas Jardim Botânico do Rio de Janeiro; Rio de Janeiro; Brazil
Universidade Federal de Santa Catarina; Florianópolis; Santa Catarina; Brazil
Universidade Estadual de Campinas; Campinas; São Paulo; Brazil
Universidade Federal do Maranhão; São Luís; Maranhão; Brazil
Programa de Pós-Graduação em Botânica; Escola Nacional de Botânica Tropical; Instituto de Pesquisas Jardim Botânico do Rio de Janeiro; Rio de Janeiro; Brazil
Instituto Nacional da Mata Atlântica; Santa Teresa; Espírito Santo; Brazil
Eudicots endemism Hugonioideae Linaceae Malpighiales neotropical flora estado do Espírito Santo Sudeste do Brasil. Descrevemos e ilustramos Roucheria krenakiana uma árvore do estrato superior da Floresta Atlântica montana que se

Abstract

A new species of Roucheria (Linaceae) was revealed through a vegetation monitoring campaign in a long-term permanent plot in Santa Teresa municipality, Espírito Santo state, southeastern Brazil. Here, we describe and illustrate Roucheria krenakiana, a canopy tree of the montane Atlantic Forest, which stands out for its obovate leaves with obtuse apex, crenulate margins and flowers with pale green petals and 3 to 5 styles, as well as congested axillary cymules, caducous stipules, and a glabrous ovary with 3–5 locules. We provide its description, illustration, phenology, a preliminary conservation assessment, and a discussion of its morphological relationships with closely related species. Our study highlights that long-term forest monitoring, when integrated with systematic voucher collecting, strengthens the documentation of poorly known lineages, and can reveal undescribed species.

References

  1. Amorim, A.M., Jardim, J.G., Lopes, M.M.M., Fiaschi, P., Borges, R.A.X., Perdiz, R.D.O. & Thomas, W.W. (2009) Angiospermas em remanescentes de floresta montana no sul da Bahia, Brasil. Biota Neotropica 9: 313–348. https://doi.org/10.1590/S1676-06032009000300028
  2. Ariza-Cortés, W., Toro-Murillo, J.L. & Lores-Medina, A. (2009) Análisis florístico y estructural de los bosques premontanos en el municipio de Amalfi (Antioquia, Colombia). Colombia Forestal 12 (1): 81–102. https://doi.org/10.14483/udistrital.jour.colomb.for.2009.1.a07
  3. Baker, T.R., Pennington, R.T., Dexter, K.G., Fine, P.V.A., Fortune-Hopkins, H., Honorio, E.N., Huamantupa-Chuquimaco, I., Klitgård, B.B., Lewis, G.P., Lima, H.C., Ashton, P., Baraloto, C., Davies, S., Donoghue, M.J., Kaye, M., Kress, W.J., Lehmann, C.E.R., Monteagudo, A., Phillips, O.L. & Vasquez, R. (2017) Maximising synergy among tropical plant systematists, ecologists and evolutionary biologists. Trends in Ecology & Evolution 32: 258–267. https://doi.org/10.1016/j.tree.2017.01.007
  4. Bentham, G. & Hooker, J.D. (1862) Lineae. Genera plantarum 1: 241–247. Reeve, London. [https://www.biodiversitylibrary.org/page/654746#page/255/mode/1up]
  5. BFG [Brazil Flora Group] (2022) Brazilian Flora 2020: Leveraging the power of a collaborative network. Taxon 71 (1): 178–198. https://doi.org/10.1002/tax.12640
  6. Cardoso, D. (2025) barRoso: Biodiversity Analysis and Record Reconciliation for Organizing Specimen Observations. R Package version 1.0. [https://github.com/dboslab/barRoso]
  7. Cardoso, P. (2017) red: an R package to facilitate species red list assessments according to the IUCN criteria. Biodiversity Data Journal 5: e20530. https://doi.org/10.3897/BDJ.5.e20530
  8. Chase, M.W. & Hills, H.H. (1991) Silica gel: an ideal material for field preservation of leaf samples for DNA studies. Taxon 40 (2): 215–220. https://doi.org/10.2307/1222975
  9. Chamberlain, S., Barve, V., Mcglinn, D., Oldoni, D., Desmet, P., Geffert, L. & Ram, K. (2023) rgbif: interface to the Global Biodiversity Information Facility API. R Package Version 3.7.7. [https://CRAN.R-project.org/package=rgbif]
  10. Chao, A., Chiu, C.H., Hu, K.H. & Zelený, D. (2023) Revisiting Alwyn H. Gentry’s forest transect data: latitudinal beta diversity patterns are revealed using a statistical sampling-model-based approach. Japanese Journal of Statistics and Data Science 6 (2): 861–884. https://doi.org/10.1007/s42081-023-00214-1
  11. Ducke, A. (1947) New forest trees and climbers of the Amazon (sixth series). Tropical Woods 90: 7–30.
  12. Ellis, B., Daly, D.C., Hickey, L.J., Johnson, K.R., Mitchell, J.D., Wilf, P. & Wing, S.L. (2009) Manual of Leaf Architecture. Cornell University Press, Ithaca, pp. 4–112. https://doi.org/10.1079/9781845935849.0000
  13. Fiaschi, P. & Pirani, J.R. (2005) Four new species of Schefflera (Araliaceae) from Espírito Santo State, Brazil. Kew Bulletin 60: 77–85. [https://www.jstor.org/stable/4110886]
  14. Fonseca-Cortés, A., Cardoso, D.B.O.S., Snak, C. & Queiroz, L.P. (2023) A new endemic species of Macropsychanthus (Leguminosae: Papilionoideae) from the Brazilian Atlantic Forest. Phytotaxa 620 (3): 225–234. https://doi.org/10.11646/phytotaxa.620.3.3
  15. Fraga, C.N. & Saavedra, M.M. (2006) Three new species of Elvasia (Ochnaceae) from the Brazilian Atlantic Forest, with an emended key for subgenus Hostmannia. Novon 16: 483–489. https://doi.org/10.3417/1055-3177(2006)16[483:TNSOEO]2.0.CO;2
  16. Gentry, A.H. (1988) New species and a new combination for plants from trans-Andean South America. Annals of the Missouri Botanical Garden 75 (4): 1429–1439. https://doi.org/10.2307/2399294
  17. Goldenberg, R., Reginato, M. & Michelangeli, F.A. (2020) Miconia lucenae (Melastomataceae), a new species from montane Atlantic Forest in Espírito Santo, Brazil. PeerJ 8: e8752. https://doi.org/10.7717/peerj.8752
  18. Hallier, H. (1921) Beiträge zur Kenntnis der Linaceae (DC. 1819) Dumort. Beihefte zum Botanischen Centralblatt Abt. 39 (2): 49, 1–178.
  19. Harris, J. & Harris, M. (2001) Plant Identification terminology: an illustrated glossary. Spring Lake Publishing, Payson, Utah.
  20. Jardim, A.G. (1999) A revision of Roucheria Planch. and Hebepetalum Benth. (Hugoniaceae). Master’s thesis, University of Missouri–St. Louis, St. Louis, USA.
  21. Jardim, A. & Berry, P.E. (1999) A new species of Roucheria and a new species of Hebepetalum (Hugoniaceae) from the Venezuelan Guayana. Novon 9 (4): 520–523. https://doi.org/10.2307/3392154
  22. Lima, R.A., Sánchez‐Tapia, A., Mortara, S.R., ter Steege, H. & Siqueira, M.F. (2023) plantR: An R package and workflow for managing species records from biological collections. Methods in Ecology and Evolution 14 (2): 332–339. https://doi.org/10.1111/2041-210X.13779
  23. Linnaeus, C. (1753) Species plantarum, vol. 2. Salvius, Stockholm, 640 pp.
  24. Lobão, A.Q. & Johnson, D.M. (2007) Xylopia decorticans (Annonaceae) a new cauliflorous species from Brazil. Contributions of the University of Michigan Herbarium 25: 207–211.
  25. Lopes, L.C.M., Mariano-Neto, E. & Amorim, A.M. (2015) Estrutura e composição florística da comunidade lenhosa do sub-bosque em uma floresta tropical no Brasil. Boletim do Museu de Biologia Mello Leitão 37 (4): 361–391.
  26. Machado, D.N.S., Barros, A.A.M., Ribas, L.A.A., Damasceno, D.B.M., Huamantupa-Chuquimaco, I. & Peixoto, A.L. (2024) Florestas tropicais: o legado do botânico Alwyn Howard Gentry. Gentryana 3 (1): e341. https://doi.org/10.55873/gentryana.v3i1.341
  27. Martini, A.M.Z., Fiaschi, P., Amorim, A.M. & Paixão, J.L.D. (2007) A hot-point within a hot-spot: a high diversity site in Brazil’s Atlantic Forest. Biodiversity and Conservation 16 (11): 3111–3128. https://doi.org/10.1007/s10531-007-9166-6
  28. McDill, J.R. & Simpson, B.B. (2011) Molecular phylogenetics of Linaceae with complete generic sampling and data from two plastid genes. Botanical Journal of the Linnean Society 165: 64–83. https://doi.org/10.1111/j.1095-8339.2010.01096.x
  29. McDill, J., Repplinger, M., Simpson, B.B. & Kadereit, J.W. (2009) The phylogeny of Linum and Linaceae subfamily Linoideae, with implications for their systematics, biogeography, and evolution of heterostyly. Systematic Botany 34 (2): 386–405. https://doi.org/10.1600/036364409788606244
  30. Peixoto, A.L. & Gentry, A. (1990) Diversidade e composição florística da mata de tabuleiro na Reserva Florestal de Linhares (Espírito Santo, Brasil). Revista Brasileira de Botânica 13 (1): 19–25.
  31. Peixoto-Filho, P.G., A.L. & Jesus, R.M. (2000) Espécies vegetais descritas a partir de espécimes coletados na Reserva Florestal de Linhares, Espírito Santo, Brasil. Boletim do Museu de Biologia Mello Leitão 11 (12): 35–48.
  32. Planchon, J.E. (1847) Sur la famille des Linées. The London Journal of Botany 6: 141–146.
  33. Planchon, J.E. (1848) Sur la famille des Linées (continued). The London Journal of Botany 7: 473–501.
  34. Phillips, O.L., Baker, T.R., Feldpausch, T.R. & Brienen, R.J.W. (2016) Manual de campo para o estabelecimento e remedição de parcelas da RAINFOR. The Royal Society/RAINFOR network. [https://forestplots.net/upload/pt/ManualsPT/RAINFOR_field_manual_PT.pdf]
  35. Phillips, O.L. (2025) How Al Gentry changed tropical ecology. Annals of the Missouri Botanical Garden 110 (1): 111–127. https://doi.org/10.3417/2025931
  36. R Core Team (2025) R: A language and environment for statistical computing. R Foundation for Statistical Computing, Vienna, Austria. [https://www.R-project.org/]
  37. Saiter, F.Z., Brown, J.L., Thomas, W.W., Oliveira‐Filho, A.T. & Carnaval, A.C. (2016) Environmental correlates of floristic regions and plant turnover in the Atlantic Forest hotspot. Journal of Biogeography 43 (12): 2322–2331. https://doi.org/10.1111/jbi.12774
  38. Secco, R.D.S. & Silva, S.M.B. (1990) Materiais para a Flora Amazônica-VIII. Contribuição à Sistemática das Linaceae da Amazônia Brasileira. Boletim do Museu Paraense Emílio Goeldi, Belém, Série Botânica 6: 113–135. [https://www.biodiversitylibrary.org/page/53233108]
  39. Soares-Silva, J.P. (2021) Revisão Taxonômica de Linaceae para o Brasil. Dissertação (Mestrado). Universidade Estadual Paulista UNESP), São José do Rio Preto, Brasil.
  40. Thomaz, L.D. & Monteiro, R. (1997) Composição florística da mata atlântica de encosta da Estação Biológica de Santa Lúcia, município de Santa Teresa-ES. Boletim do Museu de Biologia Mello Leitão 7: 3–48.

How to Cite

Ottino, G.C., Amorim, A.M.A., Fraga, C.N.D., Fiaschi, P., Silva, S.P., Silva, L.F.G.D., Soares-Silva, J.P., Marinho, L.C., Cardoso, D. & Viana, P.L. (2026) A long-term permanent forest plot reveals a remarkable new species of Roucheria (Linaceae) from the Brazilian Atlantic Rainforest. Phytotaxa 763 (3): 263–272. https://doi.org/10.11646/phytotaxa.763.3.5