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| Pitcairnia mineira B.M.Carvalho & Forzza, in Carvalho et Forzza, 2022. |
ABSTRACT
Pitcairnia is a species-rich genus with about 400 species distributed mainly in the Neotropics. We propose and diagnose a new rheophytic species of Pitcairnia, P. mineira, found in campos rupestres vegetation in the Southern Espinhaço Province (Minas Gerais State). We provide a description, including anatomical characters, illustration, distribution map, photographs, preliminary conservation assessment and comments on the distribution, habitat, phenology, and taxonomy of the new species. We also include an identification key to all species of Pitcairnia in the Espinhaço Range, Minas Gerais, Brazil.
Keywords: campos rupestres; Pitcairnioideae; Brazilian flora; endemism; leaf anatomy
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| Pitcairnia mineira B.M.Carvalho & Forzza. A. Habit. B. Leaf. C. Sheath. D. Infructescence. E. Floral bract. F. Flower. G. Immature fruit. H. Sepal. I. Petal. J. Fruit with floral bract. K-L. Seeds. Drawn by Maria Alice de Rezende. (A-E, G, J-L based on RB00515365 and F, H, I based on RB00815370). |
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| Pitcairnia mineira B.M.Carvalho & Forzza in cultivation at the Rio de Janeiro Botanical Garden A. Habit. B. Inflorescence. C. Flower with floral bract. Photos by Nara Vasconcellos, RBvb00575749, available at Jabot (http://jabot.jbrj.gov.br/. 14 Aug. 2021). |
Pitcairnia mineira B.M.Carvalho & Forzza, sp. nov.
Pitcairnia mineira is most similar to P. bradei Markgr., but differs by the following: thin peduncle, 0.3-0.5 cm in diam. (vs. 1-2 cm in diam.); lepidote peduncle, floral bracts and sepals (vs. glabrescent peduncle, floral bracts and sepals); erect to erect-patent flowers post-anthesis (vs. patent flowers post-anthesis); red calyx and corolla (vs. yellow-orange calyx and greenish-yellow corolla); narrow-elliptical petals with obtuse to rounded apex (vs. oblanceolate petals with acute apex); and ovary more than 1/2 inferior (vs. ovary more than 1/2 superior).
Etymology: The species was named Pitcairnia mineira because it was collected in the state of Minas Gerais, which is one of the main center of diversity and endemism of the Bromeliaceae, especially in the Espinhaço Range.
Brenda de Moura Carvalho and Rafaela Campostrini Forzza. 2022. Pitcairnia mineira (Bromeliaceae): A New rheophytic Species from the Espinhaço Range, Brazil. Acta Bot. Bras. 36; DOI: doi.org/10.1590/0102-33062021abb0377