Abstract
A new species of Rudgea (Rubiaceae) was discovered in a forest remnant in the state of Rio de Janeiro, Brazil, within the Atlantic Rainforest, and is distinguished by its relatively small leaves, reduced inflorescences, and the broadly infundibular, externally densely tomentose corolla. Rudgea infundibuliformis is categorized as Critically Endangered, and is known so far from a single locality, the “Mata do Quimbira”, in the municipality of Italva. This rare species is probably related to other species of the Jasminoides informal Group, sharing characters as the leaf blade with axillary domatia in the secondary veins beneath, terminal and pedunculate inflorescences, lobed calyx, infundibular corolla, and ripe fruits orange or red.
References
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Taylor, C.M. & Bruniera, C.P. (2018) Rubiacearum Americanarum Magna Hama Pars XXXIX. New species of Carapichea and Rudgea (Palicoureeae) from Western Amazonia. Novon 26: 240–251. https://doi.org/10.3417/2018026
Taylor, C.M. & Bruniera, C.P. (2021) Rubiaceae Americanarum Magna Hama Pars XLVII. New Species and a New Combination for Rudgea in Panama and Western South America (Palicoureeae). Novon 29: 132–151. https://doi.org/10.3417/2021654
Taylor, C.M., Bruniera, C.P. & Zappi, D.C. (2015) Taxonomic transfers in Neotropical Palicoureeae: new combinations in Rudgea and Palicourea. Kew Bulletin 70: 45. [7 pp.] https://dx.doi.org/10.1007/S12225-015-9596-3
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Torres-Leite, F., Bruniera, C.P., Zappi, D.C. & Carrijo, T.T. (2018) A new species of Rudgea (Palicoureeae, Rubiaceae), from Espírito Santo state, Brazil. Phytotaxa 379 (2): 180–186. https://doi.org/10.11646/phytotaxa.379.2.6
Zappi, D. (2003) Revision of Rudgea (Rubiaceae) in Southeastern and Southern Brazil. Kew Bulletin 58: 513–596. https://doi.org/10.2307/4111145
Barrabé, L., Buerki, S., Mouly, A., Davis, A.P., Munzinger, J. & Maggia, L. (2012) Delimitation of the genus Margaritopsis (Rubiaceae) in the Asian, Australasian and Pacific region, based on molecular phylogenetic inference and morphology. Taxon 61 (6): 1251–1268. https://doi.org/10.1002/tax.616007
Bentham, G. (1850) Plantae Regnellianae (Continuatio) Rubiaceae. Linnaea 23: 455–466.
Bentham, G. (1853[“1852”]) In Oersted, A.S. Centralamericas Rubiaceer. Videnskabelige Meddelelser fra Dansk Naturhistorisk Forening i Kjøbenhavn 1852 (2–4): 23–61.
Bremekamp, C.E.B. (1934) Notes on the Rubiaceae of Surinam. Recueil des Travaux Botanique Néerlandais 31: 248–308.
Bruniera, C.P. (2015) Sistemática e taxonomia de Rudgea Salisb. (Palicoureeae, Rubiaceae). Unpublished Doctoral Thesis, Instituto de Biociências, Universidade de São Paulo, São Paulo, 283 pp. [http://www.teses.usp.br/teses/disponiveis/41/41132/tde-28072015-145432/en.php]
Bruniera, C.P. & Zappi, D.C. (2015) Rudgea in Flora do Brasil 2020. Jardim Botânico do Rio de Janeiro. Available from: http://floradobrasil.jbrj.gov.br/reflora/floradobrasil/FB14246 (Accessed 2 June 2021)
Bruniera, C.P., Zappi, D.C. & Groppo, M. (2015) Rudgea agresteophila and R. hileiabaiana (Palicoureeae, Rubiaceae): two new species from eastern Bahia, Brazil. Phytotaxa 202 (4): 289–293. https://doi.org/10.11646/phytotaxa.202.4.8
Chamisso, L.K.A. (1834[“1835”]) Plantarum e familiis Jam Prius Recensitis - Praesertim Brasiliensium. Linnaea 9: 222–233.
IUCN (2019) IUCN Red List Categories and Criteria: Version 14. Gland, Switzerland and Cambridge. Available from: www.iucnredlist.org/technical-documents/categories-and-criteria (accessed 25 May 2022)
Lachenaud, O., Bruniera, C.P. & Zappi, D.C. (2022) Six new species and a little known species of Rudgea (Rubiaceae–Palicoureeae) from the Guianas. Phytotaxa 531 (3): 154–174. https://doi.org/10.11646/phytotaxa.531.3.1
Linnaeus, C. (1759) Systema Naturae per regna tria naturae secundum classes, ordines, genera, species, cum characteribus, differentiis, synonymis, locis. Tomus II. Editio Decima, reformata. L. Salvi, Stockholm, 559 pp. https://doi.org/10.5962/bhl.title.542
Mu?ller Argoviensis, J. (1876) Rubiaceae brasiliensis novae. Flora 59: 449–466.
Mu?ller Argoviensis, J. (1881) Rubiaceae, tribus VI. Psychotrieae. In: Martius, C.P.F., Eichler, A.G. & Urban, I. (Eds.) Flora Brasiliensis. Fleischer, Leipzig, pp. 161–458, 462–468.
Radford, A.E., Dickison, W.C., Massey, J.R. & Bell, C.R. (1974) Vascular Plant Systematics. Harper & Row Publishers, New York, 891 pp.
Razafimandimbison, S.G., Taylor, C.M., Wikstro?m, N., Pailler, T., Khodabandeh, A. & Bremer, B. (2014) Phylogeny and generic limits in the sister tribes Psychotrieae and Palicoureeae (Rubiaceae): Evolution of schizocarps in Psychotria and origins of bacterial leaf nodules of the Malagasy species. American Journal of Botany 101: 1102–1126. https://doi.org/10.3732/ajb.1400076
Ribeiro, M.C., Metzger, J.P., Martensen, A.C., Ponzoni, F.J. & Hirota, M.M. (2009) The Brazilian Atlantic Forest: How much is left, and how is the remaining forest distributed? Implications for conservation. Biological Conservation 142: 1141–1153. https://doi.org/10.1016/j.biocon.2009.02.021
Robbrecht, E. (1988) Tropical woody Rubiaceae. Opera Botanica Belgica 1: 1–271.
Robbrecht, E. & Manen, J.-F. (2006) The major evolutionary lineages of the coffee family (Rubiaceae, angiosperms). Combined analysis (nDNA and cpDNA) to infer the position of Coptosapelta and Luculia, and supertree construction based on rbcL, rps16, trnL-trnF and atpB-rbcL data. A new classification in two subfamilies, Cinchonoideae and Rubioideae. Systematics and Geography of Plants 76: 85–146.
Salisbury, R.A. (1807) Description of a new genus in the natural order of Rubiaceae, called Rudgea. Transactions of the Linnean Society of London 8: 325–329. https://doi.org/10.1111/j.1096-3642.1807.tb00320.x
Schumann, K. (1891) Rubiaceae In: Engler, A. & Prantl, K. (eds.) Die Natu?rlichen Pflanzenfamilien vol. 4, part 4. Engelmann, Leipzig, pp. 1–156.
Sprengel, K. (1821) Species plantarum minus cognitae: Rubiaceae. Neue Entdeckungen im ganzen Umfang der Pflanzenkunde 2: 143–146.
Steyermark, J.A. (1972) Rubiaceae. In: Maguire, B. & Steyermark, J.A. (Eds.) The Botany of the Guayana Highland-Part IX. Memoirs of the New York Botanical Garden 23: 227–832.
Taylor, C.M. & Bruniera, C.P. (2018) Rubiacearum Americanarum Magna Hama Pars XXXIX. New species of Carapichea and Rudgea (Palicoureeae) from Western Amazonia. Novon 26: 240–251. https://doi.org/10.3417/2018026
Taylor, C.M. & Bruniera, C.P. (2021) Rubiaceae Americanarum Magna Hama Pars XLVII. New Species and a New Combination for Rudgea in Panama and Western South America (Palicoureeae). Novon 29: 132–151. https://doi.org/10.3417/2021654
Taylor, C.M., Bruniera, C.P. & Zappi, D.C. (2015) Taxonomic transfers in Neotropical Palicoureeae: new combinations in Rudgea and Palicourea. Kew Bulletin 70: 45. [7 pp.] https://dx.doi.org/10.1007/S12225-015-9596-3
Torres-Leite, F., Bruniera, C.P., Zappi, D.C. & Carrijo, T.T. (2016) True axillary inflorescences in Rudgea (Palicoureeae, Rubiaceae), a newly reported characteristic of two new Brazilian species, R. quisquiliae and R. axilliflora. Phytotaxa 272 (3): 191–200. https://doi.org/10.11646/phytotaxa.272.3.3
Torres-Leite, F., Bruniera, C.P., Zappi, D.C. & Carrijo, T.T. (2018) A new species of Rudgea (Palicoureeae, Rubiaceae), from Espírito Santo state, Brazil. Phytotaxa 379 (2): 180–186. https://doi.org/10.11646/phytotaxa.379.2.6
Zappi, D. (2003) Revision of Rudgea (Rubiaceae) in Southeastern and Southern Brazil. Kew Bulletin 58: 513–596. https://doi.org/10.2307/4111145