Abstract
We describe Quararibea alversonii, a new species endemic to the Atlantic Forest of southern Bahia, which was found in the course of our review of Quararibea in Brazil. The new taxon is similar to Q. amazonica, mainly in calyx morphology, but it is distinguished by the presence of domatia, pedicel length, petal width, morphology of staminal columns and styles, as well as fruit shape. Here, we present a morphological description, taxonomic comments, photographs, distribution map, assessment of conservation status, and a comparative analysis between the new species and Q. amazonica, the only other member of the genus that also presents a costate calyx.
References
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<p>Alverson, W.S. (1989) <em>Matisia</em> and <em>Quararibea</em> (Bombacaceae) should be retained as separate genera. <em>Taxon</em> 38 (3): 377–388. https://doi.org/10.2307/1222268</p>
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<p>Cascante-Marín, A., Sánchez-González, J. & Alverson, W.S. (2018) A New <em>Quararibea</em> (Malvaceae) from the Caribbean Lowlands of Costa Rica. <em>Novon</em> 26 (3): 262–267. https://doi.org/10.3417/2018106</p>
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<p>Ferreira, C.D.M. (2020) <em>Quararibea</em> in Flora do Brasil 2020. Jardim Botânico do Rio de Janeiro. Available from: http://reflora.jbrj.gov.br/reflora/floradobrasil/FB9199 (accessed 4 February 2022)</p>
<p>Ferreira, C.D.M. (2021) <em>Quararibea bovinii</em> (Malvaceae), a new species from the Brazilian Atlantic Forest. <em>Rodriguesia</em> 72: e01722019. http://dx.doi.org/10.1590/2175-7860202172015</p>
<p>Ferreira, C.D.M. & Bovini, M.G. (2020) <em>Quararibea bragae</em> (Malvaceae; Malvoideae): a new species with multiple domatia from Brazil. <em>Phytotaxa </em>452 (3): 224–230. https://doi.org/10.11646/phytotaxa.452.3.5</p>
<p>Ferreira, C.D.M., Bovini, M.G. & Baumgratz, J.F.A. (in progress) Does <em>Quararibea</em> (Malvaceae; Malvoideae) have exclusive species from Cerrado Biome in Brazil? Untangling the taxonomy of <em>Quararibea floribunda</em> (A.St.-Hil. & Naudin) K. Schum. to solve this puzzle. <em>Plant Ecology and Evolution</em>.</p>
<p>Ferreira, C.D.M., Bovini, M.G. & De Toni, K.L. (2018) Miscellaneous additions to <em>Quararibea</em> (Malvaceae) from Atlantic Forest of Southeast Brazil. <em>Systematic Botany</em> 43 (4): 1011–1019. https://doi.org/10.1600/036364418X697616</p>
<p>Humboldt, F.W.H.A. & Bonpland, A.J.A. (1808) <em>Plantae Aequinoctiales I</em>. F. Schoell, Paris, 234 pp.</p>
<p>IUCN (2019) <em>Guidelines for using the IUCN Red List Categories and Criteria, version 14</em>. IUCN Red List Unit, Cambridge U.K. Available from: http://www.iucnredlist.org/ (accessed 5 February 2022)</p>
<p>O’Dowd, D.J. & Willson, M.F. (1989) Leaf domatia and mites on Australasian plants: ecological and evolutionary implications. <em>Biological Journal of the Linnean Society</em> 37: 191–238. https://doi.org/10.1111/j.1095-8312.1989.tb01901.x</p>
<p>Payne, W.W. (1978) A glossary of plant hair terminology. <em>Brittonia</em> 30: 239–255. https://doi.org/10.2307/2806659</p>
<p>Pittier, H. (1945) Notas dendrológicas de Venezuela. <em>Boletin de la Sociedad Venezolana de Ciencias Naturales</em> 10 (64): 107–115.</p>
<p>Poiret, J.L.M. (1816) <em>Encyclopeìdie meìthodique</em>. <em>Botanique, Suppl. 4.</em> Agasse, Paris, 731 pp. https://doi.org/10.5962/bhl.title.826</p>
<p>Radford, A.E., Dickison, W.C., Massey, J.R. & Bell, C.R. (1974) <em>Vascular Plant Systematics</em>. Harper & Row Publishers, New York, 891 pp.</p>
<p>Saint-Hilaire, A. (1825) <em>Flora Brasiliae Meridionalis I</em>. Apud A. Belin, Paris, 400 pp. https://doi.org/10.5962/bhl.title.45474</p>
<p>Schumann, C.K. (1886) Bombacaceae. <em>In</em>: Martius, C.F.P. von, Eicher, A.G. & Urban, I. (Eds.) <em>Flora brasiliensis</em> 12 (3). Monachii: Lipsitae, pp. 201–250. https://doi.org/10.5962/bhl.title.454</p>
<p>Swartz, O.P. (1788) <em>Nova genera & species plantarum seu prodromus descriptionum vegetalium, maximam partem incognitorum quæ sub itinere in Indiam occidentalem annis</em>. Uppsala & Abo, Stockholm, 152 pp. https://doi.org/10.5962/bhl.title.4400</p>
<p>Theobald, W.L., Krahulik, J.L. & Rollins, R.C. (1979) Trichome description and classification. <em>In</em>: Metcalfe, C.R. & Chalk, L. (Eds.) <em>Anatomy of the dicotyledons</em>. I. Clarendon Press, Oxford, pp. 40–53.</p>
<p>Thiers, B. (2022 [constantly updated]) <em>Index Herbariorum: A global directory of public herbaria and associated staff</em>. New York Botanical Garden’s Virtual Herbarium. Available from: http://sweetgum.nybg.org/science/ih/ (accessed 1 February 2022).</p>
<p>Ulbrich, E. (1908) Bombacaceae. <em>In</em>: Ule, E. <em>Beiträge zur Flora der Hylaea nach den Sammlungen von Ule’s Amazonas-Expedition</em>. <em>Verhandlungen des Botanischen Vereins der Provinz Brandenburg</em> 50: 90–91.</p>
<p>Alverson, W.S. (1989) <em>Matisia</em> and <em>Quararibea</em> (Bombacaceae) should be retained as separate genera. <em>Taxon</em> 38 (3): 377–388. https://doi.org/10.2307/1222268</p>
<p>Aublet, J.B.C.F. (1775) <em>Quararibea. Histoire des Plantes de la Guiane Françoise</em> 2: 691–694. https://doi.org/10.5962/bhl.title.674</p>
<p>Bachman, S., Moat, J., Hill, A.V., De la Torre, J. & Scott, B. (2011) Supporting Red List threat assessments with GeoCAT: Geospatial conservation assessment tool. In e-Infrastructures for data publishing in biodiversity Science. <em>ZooKeys</em> 150: 117–126. https://doi.org/10.3897/zookeys.150.2109</p>
<p>Bayer, C. & Kubitzki, K. (2003) Malvaceae. <em>In:</em> Bayer, C. & Kubitzki, K. (Eds.) Flowering Plants Dicotyledons. Springer, Berlin, 225–311. https://doi.org/10.1007/978-3-662-07255-4_28</p>
<p>Cascante-Marín, A., Sánchez-González, J. & Alverson, W.S. (2018) A New <em>Quararibea</em> (Malvaceae) from the Caribbean Lowlands of Costa Rica. <em>Novon</em> 26 (3): 262–267. https://doi.org/10.3417/2018106</p>
<p>ESRI (2013) ArcGIS for Desktop, v. 10.1. Redlands: Environmental Systems Research Institute.</p>
<p>Ferreira, C.D.M. (2019) Quararibea<em> (Malvaceae) no Brasil extra-amazônico</em>. M.Sc Thesis. Instituto de Pesquisas Jardim Botânico do Rio de Janeiro.</p>
<p>Ferreira, C.D.M. (2020) <em>Quararibea</em> in Flora do Brasil 2020. Jardim Botânico do Rio de Janeiro. Available from: http://reflora.jbrj.gov.br/reflora/floradobrasil/FB9199 (accessed 4 February 2022)</p>
<p>Ferreira, C.D.M. (2021) <em>Quararibea bovinii</em> (Malvaceae), a new species from the Brazilian Atlantic Forest. <em>Rodriguesia</em> 72: e01722019. http://dx.doi.org/10.1590/2175-7860202172015</p>
<p>Ferreira, C.D.M. & Bovini, M.G. (2020) <em>Quararibea bragae</em> (Malvaceae; Malvoideae): a new species with multiple domatia from Brazil. <em>Phytotaxa </em>452 (3): 224–230. https://doi.org/10.11646/phytotaxa.452.3.5</p>
<p>Ferreira, C.D.M., Bovini, M.G. & Baumgratz, J.F.A. (in progress) Does <em>Quararibea</em> (Malvaceae; Malvoideae) have exclusive species from Cerrado Biome in Brazil? Untangling the taxonomy of <em>Quararibea floribunda</em> (A.St.-Hil. & Naudin) K. Schum. to solve this puzzle. <em>Plant Ecology and Evolution</em>.</p>
<p>Ferreira, C.D.M., Bovini, M.G. & De Toni, K.L. (2018) Miscellaneous additions to <em>Quararibea</em> (Malvaceae) from Atlantic Forest of Southeast Brazil. <em>Systematic Botany</em> 43 (4): 1011–1019. https://doi.org/10.1600/036364418X697616</p>
<p>Humboldt, F.W.H.A. & Bonpland, A.J.A. (1808) <em>Plantae Aequinoctiales I</em>. F. Schoell, Paris, 234 pp.</p>
<p>IUCN (2019) <em>Guidelines for using the IUCN Red List Categories and Criteria, version 14</em>. IUCN Red List Unit, Cambridge U.K. Available from: http://www.iucnredlist.org/ (accessed 5 February 2022)</p>
<p>O’Dowd, D.J. & Willson, M.F. (1989) Leaf domatia and mites on Australasian plants: ecological and evolutionary implications. <em>Biological Journal of the Linnean Society</em> 37: 191–238. https://doi.org/10.1111/j.1095-8312.1989.tb01901.x</p>
<p>Payne, W.W. (1978) A glossary of plant hair terminology. <em>Brittonia</em> 30: 239–255. https://doi.org/10.2307/2806659</p>
<p>Pittier, H. (1945) Notas dendrológicas de Venezuela. <em>Boletin de la Sociedad Venezolana de Ciencias Naturales</em> 10 (64): 107–115.</p>
<p>Poiret, J.L.M. (1816) <em>Encyclopeìdie meìthodique</em>. <em>Botanique, Suppl. 4.</em> Agasse, Paris, 731 pp. https://doi.org/10.5962/bhl.title.826</p>
<p>Radford, A.E., Dickison, W.C., Massey, J.R. & Bell, C.R. (1974) <em>Vascular Plant Systematics</em>. Harper & Row Publishers, New York, 891 pp.</p>
<p>Saint-Hilaire, A. (1825) <em>Flora Brasiliae Meridionalis I</em>. Apud A. Belin, Paris, 400 pp. https://doi.org/10.5962/bhl.title.45474</p>
<p>Schumann, C.K. (1886) Bombacaceae. <em>In</em>: Martius, C.F.P. von, Eicher, A.G. & Urban, I. (Eds.) <em>Flora brasiliensis</em> 12 (3). Monachii: Lipsitae, pp. 201–250. https://doi.org/10.5962/bhl.title.454</p>
<p>Swartz, O.P. (1788) <em>Nova genera & species plantarum seu prodromus descriptionum vegetalium, maximam partem incognitorum quæ sub itinere in Indiam occidentalem annis</em>. Uppsala & Abo, Stockholm, 152 pp. https://doi.org/10.5962/bhl.title.4400</p>
<p>Theobald, W.L., Krahulik, J.L. & Rollins, R.C. (1979) Trichome description and classification. <em>In</em>: Metcalfe, C.R. & Chalk, L. (Eds.) <em>Anatomy of the dicotyledons</em>. I. Clarendon Press, Oxford, pp. 40–53.</p>
<p>Thiers, B. (2022 [constantly updated]) <em>Index Herbariorum: A global directory of public herbaria and associated staff</em>. New York Botanical Garden’s Virtual Herbarium. Available from: http://sweetgum.nybg.org/science/ih/ (accessed 1 February 2022).</p>
<p>Ulbrich, E. (1908) Bombacaceae. <em>In</em>: Ule, E. <em>Beiträge zur Flora der Hylaea nach den Sammlungen von Ule’s Amazonas-Expedition</em>. <em>Verhandlungen des Botanischen Vereins der Provinz Brandenburg</em> 50: 90–91.</p>