Abstract
This study describes and illustrates Cattleya mireileiana (Orchidaceae: Laeliinae), a new species endemic to the Southern Espinhaço Complex near Diamantina, Minas Gerais State, Brazil, where it was found in a few isolated rocky outcrops, sharing habitat with Cattleya rupestres. It is close to three other species: Cattleya bradei, C. briegeri, and C. cruziana. However, the new species differs in the number of nodes present in the pseudobulb components, the size of the diameter, the scent of the flowers and the time of flowering. In addition, its flowers have two unique chromatic characteristics that distinguish it from all other species with yellow flowers in the Parviflorae series: the color of the carinae and the whitish area at the base of the petals and sepals. We provide a detailed morphological description, a distribution map, in situ photographs, and compare it with similar species. We assessed its state of conservation as data deficient (DD), as the only know population consists of at least 150 mature individuals and is outside of an environmentally protected area.
References
Castro, V.P. & Menezes, E.L.F. (2015) Duas novas Orchidaceae do Estado de Minas Gerais, Boletim CAOB 97/98: 28?32.
Cogniaux, A. (1901) XLVII. Cattleya and Laelia Lindl. In: Martius, C.F.P., Eichler, A.G. & Urban, I. (Eds.) Flora Brasiliensis 3 (5). pp. 188–254, 270–309.
Conceição, A.A., Rapini, A., Carmo, F.F., Brito, J.C., Silva, G.A., Neves, S.P.S. & Jacobi, C.M. (2016) Rupestrian grassland vegetation, diversity and origin. In: Fernandes, G.W. (ed.) Ecology and conservation in mountaintop grasslands in Brazil. Springer International, Switzerland. pp. 105?127. https://doi.org/10.1007/978-3-319-29808-5_6
Dressler, R.L. (1993) Phylogeny and Classification of the Orchid Family. Dioscorides Press, Portland, 314 pp.
IUCN (2012) IUCN Red List Categories and Criteria. Version 3.1. Second edition. IUCN Publications, Cambridge, 36 pp.
Lindley, J. (1824) Tab. 33 Cattleya labiata. Collectanea Botanica t. 33.
Lindley, J. (1828) Note upon Sophronia modesta, fol. 1129. Botanical Register 14: sub. t. 1147.
Lindley, J. (1831) The genera and species of orchidaceous plants. LV. Laelia. London, Ridgways, 115 pp. https://doi.org/10.5962/bhl.title.499
Lindley, J. (1842) Laelia flava. Yellow Laelia. Edwards’s Botanical Register 28: t. 62.
Menezes, E.L.F. & Rosim, M.S. (2019) Hoffmannseggella × jacintiana. L’Orchidophile 222 (50): 217–220.
Pabst, G.F.J. (1973a) Bradea. Boletim do Herbarium Bradeanum 1 (31): 332.
Pabst, G.F.J. (1973b) Bradea. Boletim do Herbarium Bradeanum 1 (31): 333.
Pabst, G.F.J. (1973c) Bradea. Boletim do Herbarium Bradeanum 1 (36): 367.
Pfitzer, E. (1889) Orchidaceae. In: Engler, A. & Prantl, K. (Eds.) Die natürlichen Pflanzenfamilien. Engelmann, Leipzig, pp. 52–224.
Radford, A.E., Dickison, W.C., Massey, J.R. & Bell, C.R. (1974) Vascular Plant Systematics. Harper and Row, New York, Evanston, San Francisco and London.
Rosim, M.S. (2018) Hoffmannseggella guaicuhyensis Rosim sp. nov, Coletânea de Orquídeas Brasileiras 13: 510?513.
Schlechter, R. (1917a) Die Einteilung der Gattung Laelia und die geographische Verbreitung ihrer Gruppen. Orchis 11: 87–96.
Quantum GIS Development Team. (2014) Quantum GIS Geographic Information System. Open Source Geospatial Foundation Project. Program and manual available from: http://qgis.osgeo.org/ (accessed 3 March 2019)
Thiers, B. (2021) [continuously updated]) Index Herbariorum: A global directory of public herbaria and associated staff. New York Botanical Garden’s Virtual Herbarium. Available from: http://sweetgum.nybg.org/science/ih/ (accessed 17 February 2021)
Available from: http://www.iucnredlist.org/ (accessed 19 May 2011)
van den Berg, C. (2005) 293. Cattleya. In: Pridgeon, A.M., Cribb, P.J., Chase, M.W. & Rasmussen, F.N. (Eds.) Genera orchidacearum, 4. Epidendroideae (Part One). Oxford University Press, Oxford, pp. 213–217.
van den Berg, C. (2008) New combinations in the genus Cattleya Lindl. Neodiversity 3: 3–12. https://doi.org/10.13102/neod.31.2
van den Berg, C. (2009) Phylogeny and systematics of Cattleya and Sophronitis. In: Sauleda, R.P. & Sandow, L.A. (Orgs.) Proceedings of the 19th world orchid conference. American Printing Arts, Miami, pp. 319–323.
van den Berg, C. (2014) Reaching a compromise between conflicting nuclear and plastid phylogenetic trees: a new classification for the genus Cattleya (Epidendreae; Epidendroideae; Orchidaceae). Phytotaxa 186 (2): 75–86. https://doi.org/10.11646/phytotaxa.186.2.2
van den Berg, C. (2018) Nomenclatural notes on Laeliinae–VII. New combinations in Cattleya for species and nothospecies originally described in Hoffmannseggella (Orchidaceae). Neodiversity 11: 1–4. https://dx.doi.org/10.13102/neod.111.1
van den Berg, C. (2019) Nomenclatural notes on Laeliinae-VIII. Overlooked new combinations in Cattleya, and new infrageneric nothotaxa. Neodiversity 12: 1–5. https://dx.doi.org/10.13102/neod.121.1
van den Berg, C., Higgins, W.E., Dressler, R.L., Whitten, M.W., Soto Arenas, M.A., Culham, A. & Chase, M.W. (2000) A phylogenetic analysis of Laeliinae (Orchidaceae) based on sequence data from internal transcribed spacers (ITS) of nuclear ribosomal DNA. Lindleyana 15: 96–114.
van den Berg, C., Higgins, W.E., Dressler, R.L., Whitten, W.M., Soto-Arenas, M.A. & Chase, M.W. (2009) A phylogenetic study of Laeliinae (Orchidaceae) based on combined nuclear and plastid DNA sequences. Annals of Botany 104: 417–430. https://dx.doi.org/10.1093/aob/mcp101
Verola, C.F. & Semir, J. (2007) Hoffmannseggella viridiflora (Orchidaceae, Laeliinae), a new species from Brazilian campus rupestris. Novon 17 (1): 125–129. https://doi.org/10.3417/1055-3177(2007)17[125:HVOLAN]2.0.CO;2
Withner, C.L. (1988) The cattleyas and their relatives, 1: the cattleyas. Timber Press, Portland, 136 pp.
Withner, C.L. (2000) The cattleyas and their relatives, 6: the South American Encyclia species. Timber Press, Portland, 194 pp.
Cogniaux, A. (1901) XLVII. Cattleya and Laelia Lindl. In: Martius, C.F.P., Eichler, A.G. & Urban, I. (Eds.) Flora Brasiliensis 3 (5). pp. 188–254, 270–309.
Conceição, A.A., Rapini, A., Carmo, F.F., Brito, J.C., Silva, G.A., Neves, S.P.S. & Jacobi, C.M. (2016) Rupestrian grassland vegetation, diversity and origin. In: Fernandes, G.W. (ed.) Ecology and conservation in mountaintop grasslands in Brazil. Springer International, Switzerland. pp. 105?127. https://doi.org/10.1007/978-3-319-29808-5_6
Dressler, R.L. (1993) Phylogeny and Classification of the Orchid Family. Dioscorides Press, Portland, 314 pp.
IUCN (2012) IUCN Red List Categories and Criteria. Version 3.1. Second edition. IUCN Publications, Cambridge, 36 pp.
Lindley, J. (1824) Tab. 33 Cattleya labiata. Collectanea Botanica t. 33.
Lindley, J. (1828) Note upon Sophronia modesta, fol. 1129. Botanical Register 14: sub. t. 1147.
Lindley, J. (1831) The genera and species of orchidaceous plants. LV. Laelia. London, Ridgways, 115 pp. https://doi.org/10.5962/bhl.title.499
Lindley, J. (1842) Laelia flava. Yellow Laelia. Edwards’s Botanical Register 28: t. 62.
Menezes, E.L.F. & Rosim, M.S. (2019) Hoffmannseggella × jacintiana. L’Orchidophile 222 (50): 217–220.
Pabst, G.F.J. (1973a) Bradea. Boletim do Herbarium Bradeanum 1 (31): 332.
Pabst, G.F.J. (1973b) Bradea. Boletim do Herbarium Bradeanum 1 (31): 333.
Pabst, G.F.J. (1973c) Bradea. Boletim do Herbarium Bradeanum 1 (36): 367.
Pfitzer, E. (1889) Orchidaceae. In: Engler, A. & Prantl, K. (Eds.) Die natürlichen Pflanzenfamilien. Engelmann, Leipzig, pp. 52–224.
Radford, A.E., Dickison, W.C., Massey, J.R. & Bell, C.R. (1974) Vascular Plant Systematics. Harper and Row, New York, Evanston, San Francisco and London.
Rosim, M.S. (2018) Hoffmannseggella guaicuhyensis Rosim sp. nov, Coletânea de Orquídeas Brasileiras 13: 510?513.
Schlechter, R. (1917a) Die Einteilung der Gattung Laelia und die geographische Verbreitung ihrer Gruppen. Orchis 11: 87–96.
Quantum GIS Development Team. (2014) Quantum GIS Geographic Information System. Open Source Geospatial Foundation Project. Program and manual available from: http://qgis.osgeo.org/ (accessed 3 March 2019)
Thiers, B. (2021) [continuously updated]) Index Herbariorum: A global directory of public herbaria and associated staff. New York Botanical Garden’s Virtual Herbarium. Available from: http://sweetgum.nybg.org/science/ih/ (accessed 17 February 2021)
Available from: http://www.iucnredlist.org/ (accessed 19 May 2011)
van den Berg, C. (2005) 293. Cattleya. In: Pridgeon, A.M., Cribb, P.J., Chase, M.W. & Rasmussen, F.N. (Eds.) Genera orchidacearum, 4. Epidendroideae (Part One). Oxford University Press, Oxford, pp. 213–217.
van den Berg, C. (2008) New combinations in the genus Cattleya Lindl. Neodiversity 3: 3–12. https://doi.org/10.13102/neod.31.2
van den Berg, C. (2009) Phylogeny and systematics of Cattleya and Sophronitis. In: Sauleda, R.P. & Sandow, L.A. (Orgs.) Proceedings of the 19th world orchid conference. American Printing Arts, Miami, pp. 319–323.
van den Berg, C. (2014) Reaching a compromise between conflicting nuclear and plastid phylogenetic trees: a new classification for the genus Cattleya (Epidendreae; Epidendroideae; Orchidaceae). Phytotaxa 186 (2): 75–86. https://doi.org/10.11646/phytotaxa.186.2.2
van den Berg, C. (2018) Nomenclatural notes on Laeliinae–VII. New combinations in Cattleya for species and nothospecies originally described in Hoffmannseggella (Orchidaceae). Neodiversity 11: 1–4. https://dx.doi.org/10.13102/neod.111.1
van den Berg, C. (2019) Nomenclatural notes on Laeliinae-VIII. Overlooked new combinations in Cattleya, and new infrageneric nothotaxa. Neodiversity 12: 1–5. https://dx.doi.org/10.13102/neod.121.1
van den Berg, C., Higgins, W.E., Dressler, R.L., Whitten, M.W., Soto Arenas, M.A., Culham, A. & Chase, M.W. (2000) A phylogenetic analysis of Laeliinae (Orchidaceae) based on sequence data from internal transcribed spacers (ITS) of nuclear ribosomal DNA. Lindleyana 15: 96–114.
van den Berg, C., Higgins, W.E., Dressler, R.L., Whitten, W.M., Soto-Arenas, M.A. & Chase, M.W. (2009) A phylogenetic study of Laeliinae (Orchidaceae) based on combined nuclear and plastid DNA sequences. Annals of Botany 104: 417–430. https://dx.doi.org/10.1093/aob/mcp101
Verola, C.F. & Semir, J. (2007) Hoffmannseggella viridiflora (Orchidaceae, Laeliinae), a new species from Brazilian campus rupestris. Novon 17 (1): 125–129. https://doi.org/10.3417/1055-3177(2007)17[125:HVOLAN]2.0.CO;2
Withner, C.L. (1988) The cattleyas and their relatives, 1: the cattleyas. Timber Press, Portland, 136 pp.
Withner, C.L. (2000) The cattleyas and their relatives, 6: the South American Encyclia species. Timber Press, Portland, 194 pp.