First record of Ipomoea spruceana (Convolvulaceae) in the Brazilian Cerrado with anatomical and palynological notes
DOI:
https://doi.org/10.70782/heringeriana.v20ib.918116Keywords:
Brazilian flora, Jitirana, leaf anatomy, micromorphology, pollen grainsAbstract
Ipomoea spruceana is a Brazilian endemic species previously considered restricted to the Amazon phytogeographical domain and poorly represented in botanical collections since its original description in 1869. Examination of herbarium specimens revealed a new occurrence of the species in the state of Mato Grosso do Sul, Brazil, representing the first confirmed record for the Cerrado domain and extending its known distribution by approximately 832 km from the nearest previously documented locality. This study also provides the first anatomical and palynological data for the species. Anatomical analyses revealed epidermal cells with sinuous anticlinal walls, anisocytic and paracytic stomata, and sessile peltate glandular trichomes. Pollen grains are large, pantoporate, spheroidal, and echinate, corresponding to the pollen pattern commonly observed in Ipomoea. The occurrence of I. spruceana in the Cerrado expands its known ecological range and highlights the importance of herbarium revisions and taxonomic studies for improving knowledge of species distributions in Brazil. A preliminary conservation assessment based on IUCN criteria classified the species as Endangered (EN). These findings contribute to the taxonomic knowledge of I. spruceana and emphasize the need for continued botanical exploration and collection efforts in under-sampled areas of the Amazon and Cerrado domains.
References
Alencar, J., Alves, J. V., Arruda, E. & Buril, M. T. (2022). Population-level analysis of leaf anatomy of Daustinia montana (Moric.) Buril & A.R. Simões: A polymorphic species with tangled taxonomic history. Brazilian Journal of Botany, 45, 1279–1295. https://doi.org/10.1007/s40415-022-00836-x
Alencar, J., Maciel, J. R. & Buril, M. T. (2024). Morphologically hypervariable species hinder our knowledge of biodiversity: Daustinia montana (Convolvulaceae) as a case study. Botanical Journal of the Linnean Society, 204, 86-101. https://doi.org/10.1093/botlinnean/boad040
Belo, D. P., Nepomuceno, S. C., Lourenco, J. A. A. M & Buril, M. T. (2020). Convolvulaceae de Pernambuco, Brasil I: Camonea, Daustinia. Distimake e Operculina. Rodriguésia, 71, e02582018. https://doi.org/10.1590/2175-7860202071111
Belo, D. P., Buril, M.T., Arruda, E. & Louzada, R. B. (2023a). A new Jacquemontia Choisy (Convolvulaceae) species from the Brazilian Amazon forest. Acta Amazonica, 53, 302–309. https://doi.org/10.1590/1809-4392202300341
Belo, D. P., Buril, M. T., Santos, E. A. V., Arruda, E. & Louzada, R. B. (2023b). Leaf and stem micromorphology of Jacquemontia evolvuloides (Moric.) Meisn. (Convolvulaceae) populations: New insights for taxonomic classification using light and scanning electron microscopy. Microscopy Research and Technique, 86, 1177–1196. https://doi.org/10.1002/jemt.24391
Belo, D. P., Santos, E. A. V. & Gasparino, E. C. (2024a). Ipomoea buriliae (Convolvulaceae), a new species of morning glory discovered in the Borborema Plateau, northeastern Brazil. Rheedea, 34, 488–505. https://doi.org/10.22244/rheedea.2024.34.05.10
Belo, D. P., Louzada, R. B. & Buril, M. T. (2024b). Alpha-taxonomy underestimates the diversity in Jacquemontia (Convolvulaceae): A new hypothesis for Jacquemontia evolvuloides complex based on morphological, anatomical, and morphometric analyses. Plant Biosystems, 158, 613–631. https://doi.org/10.1080/11263504.2024.2347853
Belo, D. P., Gasparino, E. C. & Buril, M. T. (2025). A new species of Ipomoea (Convolvulaceae) for the Brazilian flora discovered in an anthropic habitat. Acta Botanica Brasilica, 39, e20240075. https://doi.org/10.1590/1677-941X-ABB-2024-0075
Belo, D. P., Santos, E. A. V., Rocha, A. M. & Buril, M. T. (2026). Jacquemontia barbieri (Convolvulaceae), a large‑flowered new species for the Brazilian Amazon rainforest, with palynological and anatomical notes. Plant Biosystems, 160, 8. https://doi.org/10.1007/s44473-025-00010-7
Brown, J. H. & Lomolino, M. V. (1998). Biogeography. 2nd ed. Sinauer Associates, Sunderland, 1–691.
Buril, M. T., Maciel, J. R. & Alves, M. 2015. Distribution patterns and areas of endemism of Brazilian Jacquemontia (Convolvulaceae) species. Edinburgh Journal of Botany, 72: 13–33. https://doi.org/10.1017/S0960428614000316
Buril, M. T., Delgado-Junior, G. C., Barbosa, M. R. V. & Alves, M. (2013). Convolvulaceae da região do Cariri Paraibano, PB, Brasil. Revista Nordestina de Biologia, 21, 34–26.
Cunha, N. R. S., Lima, J. E., Gomes, M. F. M. & Braga, M. J. (2008). A intensidade da exploração agropecuária como indicador da degradação ambiental na região dos Cerrados, Brasil. Revista de Economia e Sociologia Rural, 46(2), 291–323. https://doi.org/10.1590/S0103-20032008000200002
Delgado-Junior, G. C., Costa, S. L., Staples, G. & Buril, M. T. (2023). Flora of Pernambuco, Brazil: Ipomoea (Convolvulaceae). Rodriguésia, 74: e01152020. https://doi.org/10.1590/2175-7860202374009
Erdtman, G. (1960). The acetolysis method. A revised description. Svensk Botanisk Tidskrift, 54, 561-564.
Falcão, J. I. A. (1971). Convolvulaceae do Amazonas. Acta Amazonica, 1, 15-20.
Halbritter, H., Ulrich, S., Grímsson, F., Webber, M., Zetter, R., Hesse, M., Buchner, R., Svojtka, M. & Frosch-Radivo, A. (2018). Illustrated Pollen Terminology. 2nd. edn. Springer International Publishing. Cham, 483pp.
Hanks, S. & Fryxell, P. A. (1979). Palynological studies of Gaya and Herissantia (Malvaceae). American Journal of Botany, 66, 494–501. https://doi.org/10.1002/j.1537-2197.1979.tb06251.x
Harris, J. G. & Harris, M. W. (2001). Plant identification terminology: an illustrated glossary. 2nd ed. Utah: Spring Lake, 197 pp.
Hoen, P. P. & Punt, W. (1989). Pollen morphology of the tribe Dorstenieae (Moraceae). Review of Palaeobotany and Palynology, 57, 187–220.
Hortal, J., De Bello, F., Diniz-Filho, J. A. F., Lewinsohn, T. M., Lobo, J. M. & Ladle, R. J. (2015). Seven shortfalls that beset large-scale knowledge of biodiversity. Annual Review of Ecology and Systematics, 46, 523–549. https://doi.org/10.1146/annurev-ecolsys-112414-054400
IUCN – International Union for Conservation of Nature. (2012). Red list categories and criteria. Version 3.1. 2nd ed. Prepared by the IUCN Species Survival Commission, Gland and Cambridge. https://www.iucnredlist.org/. (Accessed 2 Jun 2026).
IUCN – International Union for Conservation of Nature. (2024). Guidelines for using the IUCN red list categories and criteria. Version 16. Prepared by the standards and petitions committee. https://www.iucnredlist.org/resources/redlistguidelines. (Accessed 2 Jun 2026).
Ketjarun, K., Staples, G. W., Swangpol, S. C. & Traiperm, P. (2016). Micro-morphological study of Evolvulus spp. (Convolvulaceae): the old-World medicinal plants. Botanical Studies, 57, 25. https://doi.org/10.1186/s40529-016-0141-y
Klink, C. A & Machado, R. B. (2005). Conservation of the Brazilian Cerrado. Conservation Biology, 19, 707–713. https://doi.org/10.1111/j.1523-1739.2005.00702.x
Kraus, J. E. & Arduin, M. (1997). Manual básico de métodos em morfologia vegetal. Seropedica: EDUR, 1–198.
Lomolino, M. V. (2004). Conservation biogeography. In: Lomolino MV, Heaney LR (eds). Frontiers of biogeography: New directions in the geography of nature. Sinauer associates, Sunderland, 293–296.
Lourenço, J. A. A. M, Correia, B. E. F., Diniz, M R., Rêgo, M. M. C., Almeira-Júnior, E. B. & Buril M. T. (2020). Ampliação da distribuição de Daustinia montana (Moric.) Buril & A. R. Simões (Convolvulaceae): registro da primeira ocorrência para o Maranhão, Brasil. Biota Amazônia, 10(1), 53–55. http://dx.doi.org/10.18561/2179-5746/biotaamazonia.v10n1p53-55
Marinho, A. M., Costa, S. L. & Buril, M. T. (2023). The genus Ipomoea (Convolvulaceae) in the state of Rio Grande do Norte, Brazil. Rodriguésia, 74, e01042021. https://doi.org/10.1590/2175-7860202374008
Meisner, C. F. (1869). Convolvulaceae. In: Martius CPF, Eichler AG, editors. Flora brasiliensis. Leipzig: F. Fleischer, 7, 199–370.
Melhem, T. S., Cruz-Barros, M. A. V., Corrêa, A. S., Makino-Watanabe, H., Silvestre-Capelato, M. S. F., Gonçalves-Esteves, V. L. (2003). Variabilidade polínica em plantas de Campos do Jordão, São Paulo, Brasil. Boletim do Instituto de Botânica de São Paulo, 16, 10–104.
Nepomuceno, S. C, Athie-Souza, S. M. & Buril, M. T. (2016). Convolvulaceae da microrregião do Alto Capibaribe, PE Brasil. Hoehnea, 43(3), 371–386. https://doi.org/10.1590/2236-8906-31/2016
Ondo, I., Dhanjal-Adams, K. L., Pironon, S., Silvestro, D., Colli-Silva, M., Deklerck, V., Grace, O. M., Monro, A. K., Nicolson, N., Walker, B. et al. (2024). Plant diversity darkspots for global collection priorities. New Phytologist, 244(2),719–733. https://doi.org/10. 1111/nph.20024
Pastore, M. & Simao-Bianchini, R. (2017). Sinopse do gênero Jacquemontia Choisy (Convolvulaceae) no estado de São Paulo, Brasil: notas nomenclaturais, taxonômicas e geográficas. Hoehnea, 44, 611–634. https://doi.org/10.1590/2236-8906-77/2017
Pastore, M., Moreira, A. L. C., Morais, I. L., Romeiro, L. A. & Simao-Bianchini, R. (2025). Jacquemontia verae (Convolvulaceae): a new species from Brazilian savanas. Phytotaxa, 701(1), 056–068. https://doi.org/10.11646/phytotaxa.701.1.4
Pastore, M., Simão-Bianchini, R., Santos, D. A., Daniela Santos Carneiro Torres, D. S. C. & Viana, P. L. (2023). The Discovery of a New Species of Convolvulaceae: Dicranostyles yrypoana from the Brazilian Amazon Rainforest, Systematic Botany, 48(1), 88–95. https://doi.org/10.1600/036364423X16758873924126
POWO – Plants of the world online. (2026). Facilitated by the royal botanic gardens, kew. https://powo.science.kew.org/. (Accessed 3 May 2026).
Punt, W., Hoen, P. P., Blackmore, S., Nilsson, S. & Le Thomas, A. (2007). Glossary of pollen and spore terminology. Review of Palaeobotany and Palynology, 143, 1–81. https://doi.org/10.1016/j.revpalbo.2006.06.008
QGIS – Geographic information system. (2024). QGIS association. http://www.qgis.org
Romeiro, L. A., Silva, E. F., Vasconcelos, L. V., Lopes, K. S., Carreira, L. M. M. & Guimarães, J. T. F. (2023). Pollen morphology of Convolvulaceae from Southeastern Amazonian Cangas and its relevance for interaction networks and paleoenvironmental studies. Plants, 12, 2256. https://doi.org/10.3390/plants12122256
Salgado-Labouriau, M. L., Vanzolini, P. E. & Melhem, T. S. (1965). Variation of polar axes and equatorial diameters in pollen grains of two species of Cassia. Grana, 6, 98–105. https://doi.org/10.1080/00173136509429142
Santos, D., Saraiva, R. V. C, Ferraz, T. M., Arruda, E. C. P. & Buril, M. T. (2020). A threatened new species of Ipomoea (Convolvulaceae) from the Brazilian Cerrado revealed by morpho-anatomical analysis. PhytoKeys, 151, 93–106. https://doi.org/10.3897/phytokeys.151.49833
Santos, D., Souza, E. B. & Buril, M. T. (2021). Ipomoea lanifolia sp. nov. (Convolvulaceae), a new species endemic to the Ibiapaba plateau in northeastern Brazil. Rodriguésia, 72, e00782020. https://doi.org/10.1590/2175-7860202172076
Santos, D. & Buril, M. T. (2024). A new species of Evolvulus (Cresseae-Convolvulaceae) from the Brazilian savanna. Brittonia, 76, 253–258. https://doi.org/10.1007/s12228-023-09767-7
Santos, E. A. V., Leite, A. V. & Arruda, E. C. P. (2024). Anatomical features of ecological importance and taxonomic value revealed by scanning electron microscopy and light microscopy in Camonea umbellata (L.) A.R.Simoes & Staples (Convolvulaceae). Microscopy Research and Technique, 87:1889–1903. https://doi.org/10.1002/jemt.24554
Simão-Bianchini, R., Vasconcelos, L. V. & Pastore, M. (2016). Flora das cangas da Serra dos Carajás, Para, Brasil: Convolvulaceae. Rodriguésia, 67(5), 1301–1318. https://doi.org/10.1590/2175-7860201667530
Simao-Bianchini, R., Ferreira, P. P. A., Pastore, M., Delgado-Junior, G. C., Vasconcelos, L. V., Petrongari, F. S., Moreira, A. L. C., Buril, M. T., Simoes, A. R. & Silva, C. V. (2026). Convolvulaceae in Flora e Funga do Brasil. Jardim Botânico do Rio de Janeiro. https://floradobrasil.jbrj.gov.br/FB93. (Accessed 6 Jun 2026).
Simon, M. F., Grether, R., Queiroz, L. P., Skema, C., Pennington, R. T. & Hughes, C.E. (2009). Recent assembly of the Cerrado, a neotropical plant diversity hotspot, by in situ evolution of adaptations to fire. Proceedings of the National Academy of Sciences, 106(48), 20359–20364. https://doi.org/10.1073/pnas.0903410106
Smith, F. H. & Smith, E. C. (1942). Anatomy of the inferior ovary of Darbya. American Journal of Botany, 29, 464–471.
Staples, G. W. & Brummitt, R. K. (2007). Convolvulaceae. In: Heywood VH, Brummitt RK, Culham A, Seberg O (eds.). Flowering Plant Families of the World. London, Royal Botanic Gardens, Kew, 108–110.
Thiers, B. (2026). Index herbariorum: A global directory of public herbaria and associated staff. New York Botanical Garden’s virtual herbarium, New York. https://sweetgum.nybg.org/ih/. (Accessed 6 May 2026).
Traiperm, P., Chow, J., Nopun, P., Staples, G. & Swangpol, S. C. (2017). Identification among morphologically similar Argyreia (Convolvulaceae) based on leaf anatomy and phenetic analyses. Botanical Studies, 58, 25. https://doi.org/10.1186/s40529-017-0178-6
Vasconcelos, L. V., Saba, M. D., Junqueira, M. E. R. & Simão-Bianchini, R. (2015). Morfologia polínica de espécies das tribos Ipomoeeae Hallier f. e Merremieae D.F. Austin (Convolvulaceae) ocorrentes numa região de ecótono do município de Caetité, BA, Brasil. Hoehnea, 42: 253-264. https://doi.org/10.1590/2236-8906-37/2014
Vital, M. T. A. B., Santos, F. A. R. & Alves, M. (2008). Diversidade palinológica das Convolvulaceae do Parque Nacional do Catimbau, Buíque, PE, Brasil. Acta Botanica Brasilica, 22, 1163–1171. https://doi.org/10.1590/S0102-33062008000400027
Wood, J. R. I, Muñoz-Rodríguez, P., Williams, B. R. M, Scotland, R. W. (2020). A foundation monograph of Ipomoea (Convolvulaceae) in the New World. PhytoKeys, 143, 1–823. https://doi.org/10.3897/phytokeys.143.32821
Zar, J. H. (2010). Biostatistical analysis. New Jersey, Prentice-Hall.
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