Abstract
Microlicia rosanae and M. septentrionalis are described as new species from campo rupestre in the Espinhaço Meridional and Septentrional of Minas Gerais, Brazil, respectively. Diagnostic illustrations, field photographs, a distribution map, recommended conservation assessments, and discussions of putative related species based on morphological similarities are provided. Microlicia rosanae, from Serra do Caraça, can be recognized by its sessile oblong to narrowly oblanceolate 1-nerved leaf blades that are revolute when dry, 5–6-merous solitary flowers, hypanthia that are copiously covered with a mixture of inconspicuous spreading short and longer (some gland-tipped) trichomes that are up to ca. 0.25 mm long, fruiting hypanthia that are conspicuously constricted into a short neck just below the torus, and 5–6-locular ovaries that are ca. ½ inferior. Microlicia septentrionalis, from Pico da Formosa in northern Minas Gerais, is readily recognized by its ovate-lanceolate leaves that are somewhat concave when fresh and have red callose-thickened margins, petals pink throughout with an asymmetrical red band on the abaxial surface, hypanthia (at anthesis) somewhat constricted distally above the ovary just below the torus into a neck 1–2.5 mm long, glabrous basally and distally with a sparse ring (sometimes interrupted) of gland-tipped trichomes mostly 0.5 mm long just below the constricted neck, and 5-locular ovaries that are 2/3 inferior and beset with glandular trichomes (up to 0.5 mm long) apically around the base of the style. Microlicia rosanae is compared to the superficially similar M. pilosa and M. septentrionalis is compared with M. mellobarretoi, M. gentianoides, and M. punctata. Both newly proposed species are known only from their respective type localities.
References
Bachman, S., Moat, J., Hill, A.W., de la Torre, J. & Scott, B. (2011) Supporting red list threat assessments with GeoCAT: Geospatial conservation assessment tool. ZooKeys 150: 117–126. https://doi.org/10.3897/zookeys.150.2109
Beentje, H. (2016) The Kew Plant Glossary: an illustrated dictionary of plant terms. 2nd ed. Kew Publishing, Royal Botanic Gardens, Kew, 184 pp.
Brito, R.V. (2022) Lavoisiereae (Melastomataceae) na Serra do Caraça, Minas Gerais, Brasil. Dissertação de Mestrado. Universidade de Uberlândia, Uberlândia, Minas Gerais, Brasil. 76 pp.
Campos, L., Guedes, M.L.S., Acevedo-Rodríguez, P. & Roque, N. (2016) Contributions to the floristic and vegetation knowledge of Espinhaço Septentrional, Bahia, Brazil. Brazilian Journal of Botany 40: 427–437. https://doi.org/10.1007/s40415-016-0347-y
Candolle, A.L.P.P. de (1828) Melastomataceae. In: Candolle, A.L.L.P. de (ed.) Prodromus systematis naturalis regni vegetabilis 3. Paris, Treuttel et Würtz, pp. 99–202.
Chamisso, L.A. von (1834) De plantis in expeditione speculatoria Romanzoffiana et in herbariis regiis berolinensibus observatis (Melastomaceae Americanae). Linnea 9: 368–402.
Chamisso, L.A. von (1835) De plantis in expeditione speculatoria Romanzoffiana et in herbariis regiis berolinensibus observatis (Melastomaceae Americanae). Linnea 9: 428–460.
Don, D. (1823) [“1822”] An illustration of the natural family of plants called Melastomaceae. Memoirs of the Wernerian Natural History Society 4: 276–329.
Gaudichaud, M.C. (1830) [“1826”] Medinilla. In: Freycinet, M.L. (ed.) Voyage Monde, Uranie Physicienne, Botanique, pp. 465–562.
Harris, J.G. & Harris, M.W. (2004) Plant identification terminology: an illustrated Glossary. 2nd ed. Spring Lake Publishing, Spring Lake, Utah, 206 pp.
IUCN (2012) IUCN Red List categories and criteria. Version 3.1. Second edition. Gland and Cambridge, IUCN Press Available from: https://www.iucnredlist.org/resources/categories-and-criteria (accessed March 2023)
IUCN Standards and Petitions Subcommittee (2022) Guidelines for Using the IUCN Red list Categories and Criteria. Version 15. Prepared by the Standards and Petitions Subcommittee. Available from: http://www.iucnredlist.org/documents/RedListGuidelines.pdf (accessed 4 March 2023).
Jesus, J.C., Romero, R. & Roque, N. (2018) Two new species of Microlicia (Melastomataceae) from the Septentrional Espinhaço, Bahia, Brazil. Phytotaxa 343: 240–248. https://doi.org/10.11646/phytotaxa.343.3.4
Linnaeus, C. (1753) Species plantarum. Vol. 1. Laurentius Salvius Holmiae, Stockholm, 560 pp.
Markgraf, F. (1940) Neue pflanzenarten aus Brasilien. Notizblatt des Botanischen Gartens und Museum zu Berlin, Berlin-Dahlem 15: 220–221.
Martins, A.B. & Almeda, F. (2017) A monograph of the Brazilian endemic genus Lavoisiera (Melastomataceae: Microlicieae). Phytotaxa 315: 1–194. https://doi.org/10.11646/phytotaxa.315.1.1
Naudin, C.V. (1844) Additions à la flore du Brésil méridional. Description de genres nouveaux, et rectification de quelques anciens genres appartenant à la famille des Mélastomacées. Annales des Sciences Naturelles: Botanique, sér. 3, 2: 140–156.
QGIS Development Team (2022) QGIS Geographic Information System. Open Source Geospatial Foundation Project. Available from: http://qgis.org (accessed 4 October 2022)
Pacifico, R., Almeda, F., Frota, A. & Fidanza, K. (2020) Areas of endemism on Brazilian mountaintops revealed by taxonomically verified records of Microlicieae (Melastomataceae). Phytotaxa 450: 119–148. https://doi.org/10.11646/phytotaxa.450.2.1
Pacifico, R., Almeda, F. & Fidanza, K. (2021a) Two new species and new synonyms in Microlicieae (Melastomataceae) from Minas Gerais, Brazil. Brittonia 73: 106–115. https://doi.org/10.1007/s12228-020-09649-2
Pacifico, R., Almeda, F. & Fidanza, K. (2021b) Modeling of Microlicieae (Melastomataceae) species composition provides insights into the evolution of campo rupestre vegetation on eastern Brazilian mountaintops. Flora 281: 151850. https://doi.org/10.1016/j.flora.2021.151850
Pacifico, R. & Almeda, F. (2022a) Lavoisiereae: A Neotropical tribe with remarkable endemism on eastern Brazilian mountaintops. In: Goldenberg, R., Michelangeli, F.A. & Almeda, F. (eds.) Systematics, Evolution, and Ecology of Melastomataceae. Springer, Cham, Switzerland, pp. 385–408. https://doi.org/10.1007/978-3-030-99742-7_19
Pacifico, R. & Almeda, F. (2022b) New species of Marcetia and Microlicia (Melastomataceae) endemic to the campo rupestre of Chapada Diamantina, Bahia, Brazil. Phytotaxa 573: 39–69. https://doi.org/10.11646/phytotaxa.573.1.3
Pacifico, R., Almeda, F., Penneys, D.S. & Fidanza, K. (2022c) Systematics of the Trembleya sensu stricto clade of Microlicia (Melastomataceae, Lavoisiereae). PhytoKeys 126: 1–101. https://doi.org/10.3897/phytokeys.126.91032
Romero, R., Caetano, A.P.S., Santos, K.F., De-Paula, O.C. & Versiane, A.F.A. (2019) Two new species of Microlicia D. Don (Melastomataceae) from campo rupestre in eastern Brazil. Nordic Journal of Botany 2019: e02350. https://doi.org/10.1111/njb.02350
Ruiz, H. & Pavón, J. (1794) Florae peruvianae, et chilensis prodromus. Imprenta de Sancha, Madrid, 153 pp.
Salgado, A.A.R. & Carmo, F.F. (2015) ‘Quadriláteral Ferrífero’: A beautiful and neglected landscape between the gold and iron ore reservoirs. In: Vieira, B.C., Salgado, A.A.R. & Santos, L.J.C. (eds.) Landscapes and landforms of Brazil, World Geomorphological Landscapes. Springer Science+Business Media, Dordrecht, pp. 319–330. https://doi.org/10.1007/978-94-017-8023-0_29
Talamoni, S.A., Amaro, B.D., Cordeiro-Júnior, D.A. & Maciel, C.E.M.A. (2014) Mammals of the Reserva Particular do Patrimônio Natural Santuário do Caraça, state of Minas Gerais, Brazil. Check List 10: 1005–1013. https://doi.org/10.15560/10.5.1005
Thiers, B. (2023) [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 4 March 2023)
Ulloa Ulloa, C., Almeda, F., Goldenberg, R., Kadereit, G., Michelangeli, F.A., Penneys, D.S., Stone, R.D. & Veranso-Libalah, M.C. (2022) Melastomataceae: Global diversity, distribution, and endemism. In: Goldenberg, R., Michelangeli, F.A. & Almeda, F. (eds.) Systematics, Evolution, and Ecology of Melastomataceae. Springer, Cham, Switzerland, pp. 3–28. https://doi.org/10.1007/978-3-030-99742-7_1
Vasconcelos, M.F. & Melo Júnior, T.A. (2001) An ornithological survey of Serra do Caraça, Minas Gerais, Brazil. Cotinga 15: 21–31.
Versiane, A.F.A., Romero, R., Reginato, M., Welker, C.A.D., Michelangeli, F.A. & Goldenberg, R. (2021) Phylogenetic analysis of Microlicieae (Melastomataceae), with emphasis on the re-circumscription of the large genus Microlicia. Botanical Journal of the Linnean Society 197: 35–60. https://doi.org/10.1093/botlinnean/boab011