Convolvulaceae neotropicae novae vel minus cognitae III: Jacquemontia austiniana J.R.Grande sp. nov. (Convolvulaceae), a new species from the Venezuelan Guayana

José Ramón Grande Allende

doi:10.3989/ajbm.2508

Authors

José Ramón Grande Allende Herbario MERF, Facultad de Farmacia y Bioanálisis, Universidad de Los Andes https://orcid.org/0000-0002-7066-0608

DOI:

https://doi.org/10.3989/ajbm.2508

Keywords:

Convolvulaceae, Daniel Austin, Guayana Shield, Jacquemontia, Venezuelan Guayana

Abstract

As a part of a taxonomic update of the family Convolvulaceae Juss. for Guayana Shield, the species Jacquemontia austiniana J.R.Grande sp. nov., is described and illustrated as new to science. This species is characterized by its linear-subulate bract, ovate-lanceolate external sepals, conspicuously acuminate, villose, with the margins ciliate, and a relatively large and infundibuliform corolla. To date, this is the only species of Jacquemontia Choisy endemic to the Guayana Shield; its relationships within the genus are still to be elucidated.

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References

Austin D.F. 1982. Convolvulaceae. In Luces de Febres Z. & Steyermark J.A. (eds.), Flora de Venezuela 8 (3): 15-226. Instituto Nacional de Parques, Caracas.

Austin D.F. 1998. Convolvulaceae. In Berry P.E., Holst B.K. & Yatskievych K. (eds.), Flora of the Venezuelan Guayana 4: 377-424. Missouri Botanical Garden Press, St. Louis.

Austin D.F. 2007. Convolvulaceae. In Funk V., Hollowell T., Berry P.E., Kelloff C. & Alexander S.N. (eds.), Checklist of the Plants of the Guiana Shield (VENEZUELA: Amazonas, Bolivar, Delta Amacuro; GUYANA, SURINAM, FRENCH GUIANA). Contributions from the United States National Herbarium 55: 271-275.

Austin D.F. & Cavalcante P.B. 1982. Convolvuláceas da Amazônia. Publicações Avulsas do Museu Paraense Emilio Goeldi 36: 1-134.

Buril M.T. 2013. Sistemática e Filogenia de Jacquemontia Choisy (Convolvulaceae). Ph.D. dissertation, Universidade Federal de Pernambuco, Recife.

Buril M.T. & Alves M. 2011. A new species of Jacquemontia (Convolvulaceae) from northeastern Brazil. Brittonia 63: 436-441. https://doi.org/10.1007/s12228-011-9188-y

Buril M.T. & Alves M. 2012a. Two new species of Jacquemontia Choisy (Convolvulaceae) endemic to Bahia, Brazil. Phytotaxa 69: 27-32. https://doi.org/10.11646/phytotaxa.69.1.5

Buril M.T. & Alves M. 2012b. Jacquemontia macrocalyx (Convolvulaceae), a new species endemic to the Espinhaço Range, Brazil. Novon 22: 137-140. https://doi.org/10.3417/2011040

Buril M.T. & Alves M. 2013. Jacquemontia diamantinensis sp. nov. (Convolvulaceae) from the Chapada Diamantina, Brazil. Nordic Journal of Botany 31: 603-606. https://doi.org/10.1111/j.1756-1051.2012.01694.x

Buril M.T., Simão-Bianchini R. & Alves M. 2012. Jacquemontia robertsoniana (Convolvulaceae), a new shrub species from Brazil. Kew Bulletin 63 (3): 1-5. https://doi.org/10.1007/s12225-012-9361-9

Buril M.T., Simões A.R., Carine M. & Alves M. 2014. Austinia, a new genus of Convolvulaceae from Brazil. Phytotaxa 186 (5): 254-260. https://doi.org/10.11646/phytotaxa.186.5.2

Buril M.T., Simões A.R., Carine M. & Alves M. 2015. Daustinia, a replacement name for Austinia (Convolvulaceae). Phytotaxa 197 (1): 60. https://doi.org/10.11646/phytotaxa.197.1.8

Cárdenas D., Castaño N., Zubieta M., & Jaramillo M. 2008. Flora de las Formaciones Rocosas de la Serranía de La Lindosa. Instituto Amazónico de Investigaciones Científicas, Bogotá.

Funk V., Hollowell T., Berry P.E., Kelloff C. & Alexander S.N. (eds.) 2007. Checklist of the Plants of the Guiana Shield (VENEZUELA: Amazonas, Bolivar, Delta Amacuro; GUYANA, SURINAM, FRENCH GUIANA). Contributions from the United States National Herbarium 55: 1-584.

Grande Allende J.R. 2011. Convolvulaceae neotropicae novae vel minus cognitae I. Bonamia jiviorum, a new species from the Venezuelan Guayana. Novon 21 (2): 183-186. https://doi.org/10.3417/2008097

Grande Allende J.R., Meier W. & Rivero R. 2011. Convolvulaceae neotropicae novae vel minus cognitae, II. Ipomoea yaracuyensis, a new species from the cloud forests of the Coastal Cordillera of Venezuela. Brittonia 63 (3): 365-369. https://doi.org/10.1007/s12228-011-9179-z

Huber O. 1994. Recent advances in the phytogeography of the Guayana region, South America. Mémoires de la Société de Biogéographie ser. 3, 4: 53-63.

Huber O. 1995. Vegetation. In Steyermark J.A., Berry P.E. & Holst B.K. (eds.), Flora of the Venezuelan Guayana 1: 97-160. Timber Press, Portland.

Huber O. & Foster M.N. (eds.) 2003. Prioridades de conservación para el Escudo de Guayana, Consenso 2002. Conservation International, xxx.

Krapovickas A. 2009. Novedades en Convolvuláceas argentinas. Bonplandia 18 (1): 57-64. https://doi.org/10.30972/bon.1811348

O'Donell C.A. 1960. Las especies de Jacquemontia de Perú. Lilloa 30: 71-89.

Robertson K.R. 1971. A revision of the genus Jacquemontia (Convolvulaceae) in North and Central America and the West Indies. Ph.D. dissertation, Washington University, St. Louis.

Robertson K.R. 1982. Odonellia, a New Genus of Convolvulaceae from Tropical America. Brittonia 34: 417-423. https://doi.org/10.2307/2806498

Simão-Bianchini R. 1999. Jacquemontia revoluta (Convolvulaceae), a new species from Minas Gerais, Brazil. Taxon 9: 104-106. https://doi.org/10.2307/3392132

Simão-Bianchini R. & Pirani J.R. 2005. Duas novas espécies de Convolvulaceae de Minas Gerais, Brasil. Hoehnea 32: 295-300.

Steyermark J.A., Berry P.E., Holst B.K. & Yatskievych K. (eds.) 1995-2005. Flora of the Venezuelan Guayana. Vols. 1-9. Timber Press, Oregon (vol. 1 and 2), and Missouri Botanical Garden Press, St. Louis (vol. 3-9).

Tapia J.L. 2008. Convolvulaceae. In Hokche R., Berry P.E. & Huber O. (eds.), Nuevo Catálogo de la Flora Vascular de Venezuela: 339-345. Fundación Instituto Botánico de Venezuela Dr. Tobías Lasser, Caracas.