<i>Pitcairnia mineira</i> (Bromeliaceae): A new rheophytic species from the Espinhaço Range, Brazil

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

Authorship

Brenda de Moura Carvalho ^** Corresponding author: brendamoura.bmc@gmail.com

Jardim Botânico do Rio de Janeiro, 22460-030, Rio de Janeiro, RJ, BrazilJardim Botânico do Rio de JaneiroBrazilRio de Janeiro, RJ, Brazil Jardim Botânico do Rio de Janeiro, 22460-030, Rio de Janeiro, RJ, Brazil

http://orcid.org/0000-0001-9066-8175

Rafaela Campostrini Forzza

http://orcid.org/0000-0002-7035-9313

^* Corresponding author: brendamoura.bmc@gmail.com

SCIMAGO INSTITUTIONS RANKINGS

Figures

Figures (4)

Thumbnail

Figure 1
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).

Thumbnail

Figure 2
Pitcairnia mineira B.M.Carvalho & Forzza leaf in cross section. A. General aspect of the leaf with slightly grooved abaxial and smooth adaxial surface. B. Stomata in a groove; sclerenchyma fibers in direct contact with the water-storage tissue in the abaxial position; and presence of phloem fibers (asterisk). C. Detail of vascular bundles sheathed by sclerenchyma fibers; sclerenchyma in direct contact with the water-storage parenchyma in the adaxial position; presence of fibers in the phloem (asterisk); and peltate scale with stalk cells on the abaxial surface (circled). D. Uniseriate abaxial epidermis and stomata detail with substomatic chamber; brachyform intervascular chlorenchyma cells (asterisk). AH - aquiferous hypodermis (water-storage parenchyma); EP - epidermis; SC - substomatic chamber; SS - sclerenchymatic sheaths. Scale bars: A - 100 µm; B - 20 µm; C - 50 µm; D - 10 µm.

Thumbnail

Figure 3
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).

Thumbnail

Figure 4
Distribution of Pitcairnia mineira B.M.Carvalho & Forzza, P. bradei Markgr., P. cristalinensis (Leme) D.C.Taylor & H.Rob. and P. ulei L.B.Sm. The Southern Espinhaço Province is in red and divided into the (A) Grão-Mogol district, (B) Diamantina Plateau district and (C) Iron Quadrangle district (sensuColli-Silva et al. 2019Colli-Silva M, Vasconcelos TNC, Pirani JR. 2019. Outstanding plant endemism levels strongly support the recognition of campo rupestre provinces in mountaintops of eastern South America. Journal of Biogeography 46: 1723-1733. ). DF - Distrito Federal.

Figure 1 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).

Figure 2 Pitcairnia mineira B.M.Carvalho & Forzza leaf in cross section. A. General aspect of the leaf with slightly grooved abaxial and smooth adaxial surface. B. Stomata in a groove; sclerenchyma fibers in direct contact with the water-storage tissue in the abaxial position; and presence of phloem fibers (asterisk). C. Detail of vascular bundles sheathed by sclerenchyma fibers; sclerenchyma in direct contact with the water-storage parenchyma in the adaxial position; presence of fibers in the phloem (asterisk); and peltate scale with stalk cells on the abaxial surface (circled). D. Uniseriate abaxial epidermis and stomata detail with substomatic chamber; brachyform intervascular chlorenchyma cells (asterisk). AH - aquiferous hypodermis (water-storage parenchyma); EP - epidermis; SC - substomatic chamber; SS - sclerenchymatic sheaths. Scale bars: A - 100 µm; B - 20 µm; C - 50 µm; D - 10 µm.

Figure 3 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).

Figure 4 Distribution of Pitcairnia mineira B.M.Carvalho & Forzza, P. bradei Markgr., P. cristalinensis (Leme) D.C.Taylor & H.Rob. and P. ulei L.B.Sm. The Southern Espinhaço Province is in red and divided into the (A) Grão-Mogol district, (B) Diamantina Plateau district and (C) Iron Quadrangle district (*sensu***Colli-Silva et al. 2019**Colli-Silva M, Vasconcelos TNC, Pirani JR. 2019. Outstanding plant endemism levels strongly support the recognition of campo rupestre provinces in mountaintops of eastern South America. Journal of Biogeography 46: 1723-1733. ). DF - Distrito Federal.

How to cite

copy

Sociedade Botânica do Brasil SCLN 307 - Bloco B - Sala 218 - Ed. Constrol Center Asa Norte CEP: 70746-520 Brasília/DF. - Alta Floresta - MT - Brazil
E-mail: acta@botanica.org.br

Acompanhe os números deste periódico no seu leitor de RSS

Versão para download de PDF

PDF

Inglês

Versões e tradução automática

Versão original do texto

English

Tradução automática

Google Translator
Microsoft Translator

Como citar

RIS

BIBTEX

Outros formatos de citação e exportação:

SciELO - Scientific Electronic Library Online
Rua Dr. Diogo de Faria, 1087 – 9º andar – Vila Clementino 04037-003 São Paulo/SP - Brasil
E-mail: scielo@scielo.org

Leia a Declaração de Acesso Aberto

Métricas

<i>Pitcairnia mineira</i> (Bromeliaceae): A new rheophytic species from the Espinhaço Range, Brazil

PlumX

Mensagem

[1] ^* Corresponding author: brendamoura.bmc@gmail.com