A new species of <i>Mandevilla</i> (Apocynaceae) from limestone outcrops in Central Brazil with a short note on the occurrence of geophytes in rauvolfioids and apocynoids

Mandevilla calcicola, endemic to limestone formations in Goiás state, Brazil, is described. A key and photos for all Mandevilla species reported in Goiás and Distrito Federal, Brazil, are included. This new species is assessed as Critically Endangered (CR). A short note on the occurrence of geophytes in rauvolfioids and apocynoids (focused on Mandevilla) and its taxonomic value is included.

Keywords:
apocynoids; geophytes; Mesechiteae; tubers; tuberous roots

Authorship

J. Francisco Morales ^** Corresponding author: drjfranciscomorales@gmail.com

Department of Life Sciences, University of the West Indies, Campus St. Augustine, Trinidad and Tobago; Research Associate, Missouri Botanical Garden, P.O. Box 299, St. Louis, Missouri 63166 U.S.A.University of the West IndiesUSASt. Louis, Missouri, USA Department of Life Sciences, University of the West Indies, Campus St. Augustine, Trinidad and Tobago; Research Associate, Missouri Botanical Garden, P.O. Box 299, St. Louis, Missouri 63166 U.S.A.

http://orcid.org/0000-0002-8906-8567

Mary E. Endress

Department of Systematic and Evolutionary Botany, University of Zurich, Zollikerstrasse 107, 8008 Zurich, Switzerland.University of ZurichSwitzerlandZurich, Switzerland Department of Systematic and Evolutionary Botany, University of Zurich, Zollikerstrasse 107, 8008 Zurich, Switzerland.

http://orcid.org/0000-0002-8660-2285

Isa Lucia de Morais

Universidade Estadual de Goiás (UEG), Campus Quirinópolis, Avenida Brasil, 435, Conjunto Hélio Leão, Quirinópolis, 75860-000 Goiás, Brazil.Universidade Estadual de GoiásBrazilQuirinópolis, Goiás, Brazil Universidade Estadual de Goiás (UEG), Campus Quirinópolis, Avenida Brasil, 435, Conjunto Hélio Leão, Quirinópolis, 75860-000 Goiás, Brazil.

http://orcid.org/0000-0001-8748-9723

Polla Renon

Universidade Federal de Uberlândia, Instituto de Biologia, Uberlândia, 38405-302, Minas Gerais, Brazil.Universidade Federal de UberlândiaBrazilUberlândia, Minas Gerais, Brazil Universidade Federal de Uberlândia, Instituto de Biologia, Uberlândia, 38405-302, Minas Gerais, Brazil.

http://orcid.org/0000-0002-6250-7806

* Corresponding author: drjfranciscomorales@gmail.com

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Figures

Figures (4)

Thumbnail

Figure 1
Mandevilla calcicola. A. flowering branch. B. detail of adaxial base of leaf blade and petiole, showing the arrangement of colleters. C. adaxial view of two sepals, showing colleters at the base. D. corolla tube partially open, showing anthers. E. anther, dorsal view. F. style-head. G. nectaries and ovary (Fabio de Barros 2196, HST; drawn by J F Morales).

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Figure 2
Mandevilla calcicola (Ponte de Pedra, Paraúna, Goiás, I.L. de Morais & J.F. Morales 5850, JAR). A. Tuberous roots. B. stem with inflorescence. C. detail of leaf base. D. habitat.

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Figure 3
Distribution map of Mandevilla calcicole.

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Figure 4
Mandevilla in Goiás and Distrito Federal. A. M. abortiva (Brazil, Bahia, 2019, J F Morales). B. M. alexicaca (Brazil, Goiás, 2018, J F Morales). C. M. calcicola (Brazil, Goiás, 2019, J F Morales). D. M. clandestina (Brazil, Goiás, 2018, I L Morais). E. M. coccinea (Brazil, Rio Grande do Sul, 2017, J F Morales). F. M. emarginata (Brazil, Goiás, 2015, J F Morales). G. M. hirsuta (Brazil, Goiás, 2019, J F Morales). H. M. illustris (Brazil, Goiás, 2018, I L Morais). I. M. longiflora (Brazil, Goiás, 2019, J F Morales). J. M. martii (Brazil, Goiás, 2018, J. F Morales). K. M. myriophyllum (Brazil, Goiás, 2017, J F Morales). L. M. novocapitalis (Brazil, Goiás, 2017, J F Morales). M. M. petraea (showing verticillate leaves) (Brazil, Paraná, 2015, J F Morales). N. M. pohliana (Brazil, Goiás, 2018, J F Morales). O. M. scabra (Brazil, Goiás, 2019, J F Morales). P. M. spigeliiflora (Brazil, Goiás, 2019, I L Morais). Q. M. tenuifolia (Brazil, Goiás, 2018, J F Morales). R. M. velame (Brazil, Goiás, 2015, J F Morales). S. M. virescens (Brazil, Paraná, 2016, J F Morales). T. M. widgrenii (Brazil, Goiás, 2019, J F Morales).

Figure 1 Mandevilla calcicola. A. flowering branch. B. detail of adaxial base of leaf blade and petiole, showing the arrangement of colleters. C. adaxial view of two sepals, showing colleters at the base. D. corolla tube partially open, showing anthers. E. anther, dorsal view. F. style-head. G. nectaries and ovary (Fabio de Barros 2196, HST; drawn by J F Morales).

Figure 2 Mandevilla calcicola (Ponte de Pedra, Paraúna, Goiás, I.L. de Morais & J.F. Morales 5850, JAR). A. Tuberous roots. B. stem with inflorescence. C. detail of leaf base. D. habitat.

Figure 3 Distribution map of Mandevilla calcicole.

Figure 4 Mandevilla in Goiás and Distrito Federal. A. M. abortiva (Brazil, Bahia, 2019, J F Morales). B. M. alexicaca (Brazil, Goiás, 2018, J F Morales). C. M. calcicola (Brazil, Goiás, 2019, J F Morales). D. M. clandestina (Brazil, Goiás, 2018, I L Morais). E. M. coccinea (Brazil, Rio Grande do Sul, 2017, J F Morales). F. M. emarginata (Brazil, Goiás, 2015, J F Morales). G. M. hirsuta (Brazil, Goiás, 2019, J F Morales). H. M. illustris (Brazil, Goiás, 2018, I L Morais). I. M. longiflora (Brazil, Goiás, 2019, J F Morales). J. M. martii (Brazil, Goiás, 2018, J. F Morales). K. M. myriophyllum (Brazil, Goiás, 2017, J F Morales). L. M. novocapitalis (Brazil, Goiás, 2017, J F Morales). M. M. petraea (showing verticillate leaves) (Brazil, Paraná, 2015, J F Morales). N. M. pohliana (Brazil, Goiás, 2018, J F Morales). O. M. scabra (Brazil, Goiás, 2019, J F Morales). P. M. spigeliiflora (Brazil, Goiás, 2019, I L Morais). Q. M. tenuifolia (Brazil, Goiás, 2018, J F Morales). R. M. velame (Brazil, Goiás, 2015, J F Morales). S. M. virescens (Brazil, Paraná, 2016, J F Morales). T. M. widgrenii (Brazil, Goiás, 2019, J F Morales).

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A new species of <i>Mandevilla</i> (Apocynaceae) from limestone outcrops in Central Brazil with a short note on the occurrence of geophytes in rauvolfioids and apocynoids

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[1] * Corresponding author: drjfranciscomorales@gmail.com