Orlando Cavalari de Paula

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Associate Professor

Orlando Cavalari de Paula


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https://researchid.co/ocavalari

RESEARCH, TEACHING, or OTHER INTERESTS

Plant Science
26

Scopus Publications

592

Scholar Citations

17

Scholar h-index

22

Scholar i10-index

Scopus Publications

  • Endopachychalaza or vascularized inner integument? New data on the comparative anatomy and a review of Euphorbiaceae ovule vasculature
    Aryana Vasque Frota Guterres, Orlando Cavalari De-Paula, Denise Maria Trombert Oliveira
    Flora Morphology Distribution Functional Ecology of Plants, 2026
  • Germination control by a hard seed coat: insights from a tropical legume
    G. F. Pereira, M. C. Sanches, O. C. De-Paula, T. A. A. Vaz, G. S. Oliveira, A. G. Rodrigues-Junior
    Scientific Reports, 2025
    Classifying seed dormancy is an essential task for plant propagation; however, several plant species lack information about the kind of dormancy the seeds have or inaccurate reports are passed on without an in-depth investigation. We investigated Copaifera langsdorffii, a widespread tropical species with several contrasting reports about seed dormancy in the literature, particularly on the role of their hard seed coat on germination control. The effect of aril (seed appendage related to the prevention of germination) and dormancy-break treatments on germination were evaluated. Seed coat permeability and the role of seed size and aril on imbibition have been investigated. Seed drying and storage were carried out to investigate a possible acquisition of dormancy. The influence of aril and seed scarification on seedling emergence was also investigated. The hard seed coat has juxtaposed palisade cells, a similar feature found in seeds with physical dormancy (PY). However, intact seeds had high germination (> 70%). Seeds had a slow imbibition pattern but did not prevent it. The aril hastens imbibition, but the seed size did not affect water uptake. Hilar region is the main permeable part of the seed coat, since the dye only enters the seed in this region. Reducing seed water content or storage did not make the seeds water-impermeable. The presence of aril or scarification decreased seedling emergence. Although PY is common in leguminous trees from seasonal tropical areas, it is not present in this species. This non-dormant seed has a main permeable area in the hilar region, which controls imbibition but does not prevent it. Low germination in arillated C. langsdorffii seeds is due to high seed death caused by fungi, not an imposed dormancy. The hard coat controls water imbibition and regulate germination timing in this tropical species.
  • Three New Species of the Megadiverse Genus Microlicia (Melastomataceae) with Notes on Leaf Anatomy
    Rosana Romero, Ana Paula Souza Caetano, Karine Fonseca dos Santos, Orlando Cavalari De-Paula, Ana Flávia Alves Versiane
    Systematic Botany, 2023
    — The new species Microlicia arenaria, M. dentisepala, and M. membranacea are described from the Diamantina Plateau, Minas Gerais state, Brazil. Microlicia arenaria is a cespitose subshrub with xylopodium, fastigiate branches, forming clumps, sessile leaves, linear lamina, and hypanthium and sepals covered with golden spherical glands. In addition, it has dimorphic and bicolored stamens with tetrasporangiate anthers. Microlicia dentisepala has a subshrub or shrub habit, is erect and much branched, and its leaves are small, varnished in appearance, with both surfaces covered with spherical glands. The sepals are triangular to narrowly lanceolate and shorter than the length of the hypanthium, with a tooth aspect. Microlicia membranacea is a subshrub with petiolate leaves, lamina of membranous consistency and suprabasal venation, with prominent secondary veins. The branch, leaf, hypanthium, and sepals are covered with glandular trichomes, and the cylindrical hypanthium is slightly contracted at the apex. Microlicia arenaria and M. dentisepala exhibit some anatomical features common to Microlicia, such as amphistomatic leaves, short-stalked glandular trichomes in depressions on the leaf surface, compact mesophyll, phenolic compounds in the subepidermal layer, idioblasts with druses in the mesophyll, and collateral vascular bundles. Microlicia membranacea stands out by its hypostomatic leaves and a thin mesophyll formed by only three to four cell layers, conditions possibly related to a shaded environment. Following the criteria of the Red List of the International Union for Conservation of Nature (IUCN), we preliminarily assess the conservation status of the species Microlicia arenaria as Endangered (EN), Microlicia dentisepala as Critically Endangered (CR), and Microlicia membranacea as Data Deficient (DD). We provide descriptions of the new species, along with field images, detailed illustrations, and comparisons with related species. Data on geographic distribution and habitat are also presented.
  • Heterocarpy in Dipterocypselinae (Asteraceae): Morphology, anatomy and systematic significance
    Juliana Marzinek, Jimi Naoki Nakajima, Danilo Marques, Orlando C. De-Paula
    South African Journal of Botany, 2022
    Heterocarpy occurs when a plant produces fruits of more than one distinct shape. This phenomenon may result in different dispersion, dormancy, and germination, enabling survival in diverse environmental conditions. Heterocarpy is common in Asteraceae, and one of its most extreme examples occurs in Heterocypsela H.Rob. However, the difference between outer and inner cypselae can be originated from its developmental stage. Even with doubts, heterocarpy is applied to circumscribe Heterocypsela, Allocephalus Bringel, J.N.Nakaj. & H.Rob., Dipterocypsela S.F.Blake, and Manyonia H. Rob. in the subtribe Dipterocypselinae S.C.Keeley & H.Rob. A recent phylogenetic study has also raised uncertainties about the Dipterocypselinae monophyly and, consequently, the importance of the heterocarpy and pericarp crystals in the subtribe circumscription. Thus, we reviewed the heterocarpy and its systematic significance in the Dipterocypselinae, using light microscopy and SEM techniques. Our results confirmed the heterocarpy in Heterocypsela, reaffirmed it in Allocephalus and Dipterocypsela, and refuted its loss hypothesis in Manyonia. However, the heterocarpy was not homologous between studied genera and should not be applied as a parameter to group them. The pericarp tissue organization of the studied species, including crystals, was similar to previously studied Vernonieae Cass., reaffirming the systematics significance of the pericarp anatomy at a tribal level. Gaps in the Vernonieae cypselae knowledge hampered the morphological approximation of Allocephalus gamolepsis from Lychnophorinae, and Heterocypsela from Chrestinae-Vernoniinae. However, the Vernonieae morphology comparison demonstrated fruitful, mainly to assess the systematic significance and evolutionary patterns of the cypselae tribe.
  • The pleurogram, an under-investigated functional trait in seeds
    Ailton G Rodrigues-Junior, Carol C Baskin, Jerry M Baskin, Orlando C De-Paula
    Annals of Botany, 2021
    Background A structure called the pleurogram makes up a large part of the seed coat of some species in subfamilies Caesalpinioideae and Mimosoideae of Fabaceae, but little is known about its function. It has been hypothesized that this structure acts as a hygroscopic valve during the maturation drying of seeds. However, a new hypothesis has recently emerged that proposes a distinct function for the pleurogram. Scope Here, we provide an overview of the structure and function of the pleurogram, which is diverse and complex. This large structure can be dislodged, thereby creating a pathway for water entry into water-impermeable seeds. However, the pleurogram is non-functional as a pathway of water into the seed of some species. Thus, the evolutionary history of species with a pleurogram may be related to a loss/gain in its function. A complete model for the function of the pleurogram is proposed. Conclusions The pleurogram may act on several stages of the seed, from maturation to germination. As a hygroscopic valve, it regulates dehydration of the seed during maturation. As a pathway for water entry into the seed, the pleurogram acts as a water gap in seeds with physical dormancy, thereby regulating dormancy break/germination. The occurrence of a pleurogram in several genera of legumes and Cucurbitaceae is confirmed. Single or multiple pleurograms can serve as (the) point(s) of water entry into seeds that do not otherwise have a hilar water gap.
  • A new report of phytomelanin in cypselae of vernonieae: The case of the type species of lychnophora mart
    DANILO MARQUES, JULIANA MARZINEK, ORLANDO C. DE-PAULA
    Anais Da Academia Brasileira De Ciencias, 2021
    Phytomelanin is a mechanically hard, blackish, and inert substance rarely found in plants. In Asteraceae, this substance was historically associated with the Heliantheae alliance, but recent studies have observed it in unrelated groups as Heterocoma and Wunderlichia. During a taxonomic investigation, we found phytomelanin in cypselae of Lychnophora salicifolia an unusual feature in Vernonieae previously found only in Heterocoma. Furthermore, phytomelanin fills the intercellular spaces of the sclerenchymatic outer mesocarp in L. salicifolia. Our results doubt the (syn)apomorphy status in Heterocoma, suggest the phytomelanin may have not the same evolutionary significance in Lychnophorinae as in other tribes and proposes new perspectives for evolutionary studies in Asteraceae.
  • What kind of seed dormancy occurs in the legume genus Cassia?
    Ailton G. Rodrigues-Junior, Marco T. A. Santos, Julia Hass, Bárbara S. M. Paschoal, Orlando C. De-Paula
    Scientific Reports, 2020
    Cassia is a diverse legume genus widespread in the (sub-)tropical zone of the world. Several studies have been done on this genus; however, significant changes have occurred at the taxonomic level over the years. This has led to inaccurate information about seed dormancy in Cassia since many species are no longer included in the genus. Thus, our work aims to investigate and update the information about the kind of dormancy that occurs in seeds of Cassia species and also look into two notorious species in this group (C. fistula and C. javanica) to compare myxospermous vs. non-myxospermous seeds regarding dormancy and germination traits. Seed dormancy reports were found for 53 Cassia species, and the only kind of seed dormancy found for these species was physical dormancy (PY). Non-dormancy was not found, and all seeds had a blockage to water uptake during the dormant state, that is, all have PY. Of these 53 species, only 18 are currently included in the genus Cassia. C. fistula and C. javanica have fully developed embryos, and dormancy is only conferred by the (water-impermeable) seed coat. The lens in the seed coat is the only structure that creates a water pathway to break PY in C. fistula. Myxospermous seeds came out of dormancy faster than non-myxospermous ones. PY seems to be the only kind of seed dormancy that has evolved in Cassia. The extent of this kind of dormancy in all subtribe Cassiinae is also discussed.
  • Two new species of Microlicia D.Don (Melastomataceae) from campos rupestres in eastern Brazil
    Rosana Romero, Ana Paula Souza Caetano, Karine Fonseca dos Santos, Orlando Cavalari De‐Paula, Ana Flávia Alves Versiane
    Nordic Journal of Botany, 2019
    Two new species of Microlicia (Melastomataceae) endemic to campos rupestres in Serra do Cipó, Minas Gerais, Brazil, are described, illustrated and compared with their putative relatives. Microlicia rugosa sp. nov. is similar to M. minutiflora and M. martiana by having fastigiate branches, ascending, lanceolate or oblanceolate leaves with obtuse apex, attenuate base and entire margin, flower with short pedicels (1−2 mm long), magenta petals, and dimorphic stamens. Microlicia rugosa is further characterized by wrinkled surface of hypanthium and sepals, and both leaf surfaces with distinct depressions, which sometimes contain short‐stalked glandular trichomes. Microlicia viscida sp. nov. is similar to M. martiana , M. furnensis and M. rugosa mainly by having fastigiate branches, terete stems without leaves at the base and the bark gradually peeling to reveal the underlying brownish wood and leaves with similar size and shape. Microlicia viscida is characterized by a conspicuous secretion covering branches, leaves, hypanthium and sepals, giving a smooth and bright appearance. The leaf anatomy of both new species is briefly described. Microlicia rugosa and M. viscida are assessed as ‘Endangered’ and ‘Critically Endangered’ respectively, due to its limited extent of occurrence and area of occupancy, according to the IUCN categories and criteria.
  • Osmophores of Caryocar brasiliense (Caryocaraceae): a particular structure of the androecium that releases an unusual scent
    Elder Antônio Sousa Paiva, Stefan Dötterl, Orlando Cavalari De-Paula, Clemens Schlindwein, Letícia Silva Souto, Narah Costa Vitarelli, Claudia Inês da Silva, Sidnei Mateus, Isabel Alves-dos-Santos, Denise Maria Trombert Oliveira
    Protoplasma, 2019
    Caryocar brasiliense is a flagship species of the Brazilian Cerrado. It produces flowers with a strong peculiar scent, which are pollinated by bats and occasionally moths with short mouthparts. However, the cues responsible for attracting these nocturnal pollinators remain unknown. We aimed to identify osmophores of C. brasiliense, describe the ultrastructure of the cells involved in the synthesis and release of floral odour, and identify the constituents of the floral bouquet. We performed field observations and histochemical and ultrastructural analyses of flowers focusing on the androecium. Gas chromatography-mass spectrometry was used to analyse the scents emitted. Filament epidermal cells were found to possess an unusual shape and be responsible for the main production and release of odour. These cells, called foraminous cells, are elongate and possess pores where their cell walls are abruptly thin. The cuticle is practically absent over the pores, which facilitates odour emission. The foraminous cells have conspicuous nuclei and organelle-rich cytoplasm where oil droplets can be seen prior to anthesis. The features of these cells remain similar during anthesis, but many vesicles fuse with the plasma membrane and the number of oil droplets in the cytosol decreases. Twenty-nine components were found in the scent, especially fatty acid derivatives and N- and S-bearing compounds. Our analyses revealed that the androecium of C. brasiliense has a particular structure that acts as an osmophore. The scent from the androecium resembles that of the entire flower, which is an unprecedented finding for a plant with single flowers as the pollination unit.
  • Microlicia longirostrata, a New Species of Melastomataceae from Goiás in Central Brazil
    Rosana Romero, Jean Corrêa Fontelas, Ana Flávia Alves Versiane, Orlando Cavalari De-Paula
    Systematic Botany, 2019
    —Microlicia longirostrata (Melastomataceae), a new species from Goiás, is described and illustrated, and a discussion on leaf anatomy is also provided. The new species resembles M. consimilis and M. psammophila, but differs from them in having an indumentum with both short-stalked, spherical, glandular trichomes and long-stalked, glandular emergences, polysporangiate anthers and antesepalous stamens with a very long beak (2‐2.5 mm long), and annular collenchyma on the adaxial region of the midrib.
  • Comparative embryology of Stifftia and Wunderlichia and implications for its evolution in Asteraceae
    Stéphani K V Bonifácio, Ludimila L Moura, Juliana Marzinek, Orlando C De-Paula
    Botanical Journal of the Linnean Society, 2019
  • Unbuttoning the Ancestral Flower of Angiosperms
    Orlando C. De-Paula, Leandro C.S. Assis, Louis P. Ronse de Craene
    Trends in Plant Science, 2018
  • Comparative cypsela morphology in Disynaphiinae and implications for their systematics and evolution (Eupatorieae: Asteraceae)
    Taynara D G Silva, Juliana Marzinek, Eric K O Hattori, Jimi N Nakajima, Orlando C De-Paula
    Botanical Journal of the Linnean Society, 2018
  • Embryology of Pera (Peraceae, Malpighiales): systematics and evolutionary implications
    Rafael de Olivera Franca, Orlando Cavalari De-Paula
    Journal of Plant Research, 2017
  • A New Species of Microlicia (Melastomataceae) with Bright Golden Cuticle from Chapada dos Veadeiros, Goiás (Central Brazil)
    Rosana Romero, Ana Flávia Alves Versiane, Jean Correa Fontelas, Danielle de Oliveira Diniz Neres, Orlando Cavalari de Paula
    Systematic Botany, 2017
  • Fruits of Heterocoma (Vernonieae-Lychnophorinae): Taxonomic significance and a new pattern of phytomelanin deposition in Asteraceae
    Fernanda S. Freitas, Orlando C. De-Paula, Jimi N. Nakajima, Juliana Marzinek
    Botanical Journal of the Linnean Society, 2015
  • Roles of mucilage in emilia fosbergii, a myxocarpic Asteraceae: Efficient seed imbibition and diaspore adhesion
    Orlando C. De‐Paula, Juliana Marzinek, Denise M. T. Oliveira, Élder A. S. Paiva
    American Journal of Botany, 2015
  • Embryology of Ageratum conyzoides L. and A. fastigiatum R.M. King & H. Rob. (Asteraceae)
    Rafael de Oliveira Franca, Orlando Cavalari De-Paula, Renata Carmo-Oliveira, Juliana Marzinek
    Acta Botanica Brasilica, 2015
  • The role of fibres and the hypodermis in Compositae melanin secretion
    Orlando Cavalari De-Paula, Juliana Marzinek, Denise Maria Trombert Oliveira, Silvia Rodrigues Machado
    Micron, 2013
  • Seed ontogeny of Chamaecrista and its systematic implications in Cassiinae (Leguminosae, Caesalpinioideae)
    Orlando Cavalari De-Paula, Denise Maria Trombert Oliveira
    Plant Systematics and Evolution, 2012
  • Morphology and development of anthers and ovules in Croton and Astraea (Euphorbiaceae)
    Orlando Cavalari De‐Paula, Maria das Graças Sajo
    Nordic Journal of Botany, 2011
  • Morphology, development and homologies of the perianth and floral nectaries in Croton and Astraea (Euphorbiaceae-Malpighiales)
    Orlando Cavalari De-Paula, Maria das Graças Sajo, Gerhard Prenner, Inês Cordeiro, Paula J. Rudall
    Plant Systematics and Evolution, 2011
  • The ribs of Eupatorieae (Asteraceae): Of wide taxonomic value or reliable characters only among certain groups?
    Juliana Marzinek, Orlando Cavalari De-Paula, Denise Maria Trombert Oliveira
    Plant Systematics and Evolution, 2010
  • Multiple pleurograms in Chamaecrista Moench (Leguminosae, Caesalpinioideae)
    ORLANDO CAVALARI DE-PAULA, DENISE MARIA TROMBERT OLIVEIRA
    Botanical Journal of the Linnean Society, 2008
  • Cypsela or achene? Refining terminology by considering anatomical and historical factors
    Juliana Marzinek, Orlando Cavalari De-Paula, Denise Maria Trombert Oliveira
    Revista Brasileira De Botanica, 2008
  • Structural variation of the carpel in six Cassiinae species (Leguminosae: Caesalpinioideae)
    Orlando Cavalari De-Paula, Denise Maria Trombert Oliveira
    Acta Botanica Brasilica, 2007

RECENT SCHOLAR PUBLICATIONS

  • Germination control by a hard seed coat: insights from a tropical legume
    GF Pereira, MC Sanches, OC De-Paula, TAA Vaz, GS Oliveira, ...
    Scientific Reports 15 (1), 44285 , 2025
    2025
  • Three New Species of the Megadiverse Genus Microlicia (Melastomataceae) with Notes on Leaf Anatomy
    R Romero, APS Caetano, KF Santos, OC De-Paula, AFA Versiane
    Systematic Botany 48 (4), 564-578 , 2023
    2023
    Citations: 2
  • Heterocarpy in Dipterocypselinae (Asteraceae): morphology, anatomy and systematic significance
    J Marzinek, JN Nakajima, D Marques, OC De-Paula
    South African Journal of Botany 147, 263-274 , 2022
    2022
    Citations: 6
  • The pleurogram, an under-investigated functional trait in seeds
    AG Rodrigues-Junior, CC Baskin, JM Baskin, OC De-Paula
    Annals of Botany 127 (2), 167-174 , 2021
    2021
    Citations: 8
  • A new report of phytomelanin in cypselae of Vernonieae: the case of the type species of Lychnophora Mart
    D Marques, J Marzinek, OC De-Paula
    Anais da academia brasileira de ciências 93, e20210204 , 2021
    2021
    Citations: 14
  • Pleurogram: a seed functional trait acting from maturation to germination (Botanical Briefing)
    AG Rodrigues-Junior, CC Baskin, JM Baskin, OC De-Paula
    Annals of Botany 127 (2), 167-174 , 2021
    2021
  • What kind of seed dormancy occurs in the legume genus Cassia ?
    AG Rodrigues-Junior, MTA Santos, J Hass, BSM Paschoal, OC De-Paula
    Scientific reports 10 (1), 12194 , 2020
    2020
    Citations: 19
  • Two new species of Microlicia D.Don (Melastomataceae) from campos rupestres in eastern Brazil
    R Romero, AP Souza Caetano, KF dos Santos, OC De‐Paula, ...
    Nordic Journal of Botany 37 (10) , 2019
    2019
    Citations: 23
  • A new endangered species of Fritzschia Cham.(Melastomataceae, Marcetieae) from Espinhaço Range, Minas Gerais, Brazil
    R Romero, D Nunes da Silva, OC De-Paula, MJ Reis da Rocha
    Systematic Botany 44 (3), 664-669 , 2019
    2019
    Citations: 11
  • Osmophores of Caryocar brasiliense (Caryocaraceae): a particular structure of the androecium that releases an unusual scent.
    EAS Paiva, S Dötterl, OC De-Paula, C Schlindwein, LS Souto, NC Vitarelli, ...
    Protoplasma 256 (4), 971 , 2019
    2019
    Citations: 19
  • Microlicia longirostrata, a new species of Melastomataceae from Goiás in central Brazil
    R Romero, JC Fontelas, AF Alves Versiane, OC De-Paula
    Systematic Botany 44 (2), 349-354 , 2019
    2019
    Citations: 12
  • Comparative embryology of Stifftia and Wunderlichia and implications for its evolution in Asteraceae
    SKV Bonifácio, LL Moura, J Marzinek, OC De-Paula
    Botanical Journal of the Linnean Society 189 (2), 169-185 , 2019
    2019
    Citations: 32
  • Unbuttoning the ancestral flower of angiosperms
    OC De-Paula, LCS Assis, LPR de Craene
    Trends in Plant Science 23 (7), 551-554 , 2018
    2018
    Citations: 18
  • Comparative cypsela morphology in Disynaphiinae and implications for their systematics and evolution (Eupatorieae: Asteraceae)
    TDG Silva, J Marzinek, EKO Hattori, JN Nakajima, OC De-Paula
    Botanical Journal of the Linnean Society 186 (1), 89-107 , 2018
    2018
    Citations: 31
  • A new species of Microlicia (Melastomataceae) with bright golden cuticle from Chapada dos Veadeiros, Goiás (Central Brazil)
    R Romero, AF Alves Versiane, JC Fontelas, D de Oliveira Diniz Neres, ...
    Systematic Botany 42 (3), 562-568 , 2017
    2017
    Citations: 21
  • Embryology of Pera (Peraceae, Malpighiales): systematics and evolutionary implications
    R de Olivera Franca, OC De-Paula
    Journal of plant research 130 (4), 709-721 , 2017
    2017
    Citations: 4
  • Fruits of Heterocoma (Vernonieae-Lychnophorinae): taxonomic significance and a new pattern of phytomelanin deposition in Asteraceae
    FS Freitas, OC De-Paula, JN Nakajima, J Marzinek
    Botanical Journal of the Linnean Society 179 (2), 255-265 , 2015
    2015
    Citations: 30
  • Roles of mucilage in Emilia fosbergii , a myxocarpic Asteraceae: Efficient seed imbibition and diaspore adhesion
    OC De‐Paula, J Marzinek, DMT Oliveira, ÉAS Paiva
    American Journal of Botany 102 (9), 1413-1421 , 2015
    2015
    Citations: 17
  • Embryology of Ageratum conyzoides L. and A. fastigiatum R.M. King & H. Rob. (Asteraceae)
    RO Franca, OC De-Paula, R Carmo-Oliveira, J Marzinek
    Acta Botanica Brasilica 29 (1), 08-15 , 2015
    2015
    Citations: 33
  • The role of fibres and the hypodermis in Compositae melanin secretion
    OC De-Paula, J Marzinek, DMT Oliveira, SR Machado
    Micron 44, 312-316 , 2013
    2013
    Citations: 33

MOST CITED SCHOLAR PUBLICATIONS

  • Cypsela or achene? Refining terminology by considering anatomical and historical factors
    J Marzinek, OC De-Paula, DMT Oliveira
    Revista Brasileira de Botânica 31 (3), 549-553 , 2008
    2008
    Citations: 103
  • Morphology, development and homologies of the perianth and floral nectaries in Croton and Astraea (Euphorbiaceae-Malpighiales)
    OC De-Paula, M das Graças Sajo, G Prenner, I Cordeiro, PJ Rudall
    Plant Systematics and Evolution 292 (1), 1-14 , 2011
    2011
    Citations: 38
  • Embryology of Ageratum conyzoides L. and A. fastigiatum R.M. King & H. Rob. (Asteraceae)
    RO Franca, OC De-Paula, R Carmo-Oliveira, J Marzinek
    Acta Botanica Brasilica 29 (1), 08-15 , 2015
    2015
    Citations: 33
  • The role of fibres and the hypodermis in Compositae melanin secretion
    OC De-Paula, J Marzinek, DMT Oliveira, SR Machado
    Micron 44, 312-316 , 2013
    2013
    Citations: 33
  • Comparative embryology of Stifftia and Wunderlichia and implications for its evolution in Asteraceae
    SKV Bonifácio, LL Moura, J Marzinek, OC De-Paula
    Botanical Journal of the Linnean Society 189 (2), 169-185 , 2019
    2019
    Citations: 32
  • Comparative cypsela morphology in Disynaphiinae and implications for their systematics and evolution (Eupatorieae: Asteraceae)
    TDG Silva, J Marzinek, EKO Hattori, JN Nakajima, OC De-Paula
    Botanical Journal of the Linnean Society 186 (1), 89-107 , 2018
    2018
    Citations: 31
  • Fruits of Heterocoma (Vernonieae-Lychnophorinae): taxonomic significance and a new pattern of phytomelanin deposition in Asteraceae
    FS Freitas, OC De-Paula, JN Nakajima, J Marzinek
    Botanical Journal of the Linnean Society 179 (2), 255-265 , 2015
    2015
    Citations: 30
  • Ocorrência de coléteres em embriões de três espécies de Chamaecrista Moench (Fabaceae: Caesalpinioideae)
    OC De-Paula, DMT de Oliveira
    Revista Brasileira de Biociências 5 (S1), 348-350 , 2007
    2007
    Citations: 28
  • Two new species of Microlicia D.Don (Melastomataceae) from campos rupestres in eastern Brazil
    R Romero, AP Souza Caetano, KF dos Santos, OC De‐Paula, ...
    Nordic Journal of Botany 37 (10) , 2019
    2019
    Citations: 23
  • The ribs of Eupatorieae (Asteraceae): of wide taxonomic value or reliable characters only among certain groups?
    J Marzinek, OC De-Paula, DMT Oliveira
    Plant Systematics and Evolution 285 (1), 127-130 , 2010
    2010
    Citations: 23
  • A new species of Microlicia (Melastomataceae) with bright golden cuticle from Chapada dos Veadeiros, Goiás (Central Brazil)
    R Romero, AF Alves Versiane, JC Fontelas, D de Oliveira Diniz Neres, ...
    Systematic Botany 42 (3), 562-568 , 2017
    2017
    Citations: 21
  • What kind of seed dormancy occurs in the legume genus Cassia ?
    AG Rodrigues-Junior, MTA Santos, J Hass, BSM Paschoal, OC De-Paula
    Scientific reports 10 (1), 12194 , 2020
    2020
    Citations: 19
  • Osmophores of Caryocar brasiliense (Caryocaraceae): a particular structure of the androecium that releases an unusual scent.
    EAS Paiva, S Dötterl, OC De-Paula, C Schlindwein, LS Souto, NC Vitarelli, ...
    Protoplasma 256 (4), 971 , 2019
    2019
    Citations: 19
  • Morphology and development of anthers and ovules in Croton and Astraea (Euphorbiaceae)
    OC De‐Paula, M das Graças Sajo
    Nordic Journal of Botany , 2011
    2011
    Citations: 19
  • Unbuttoning the ancestral flower of angiosperms
    OC De-Paula, LCS Assis, LPR de Craene
    Trends in Plant Science 23 (7), 551-554 , 2018
    2018
    Citations: 18
  • Roles of mucilage in Emilia fosbergii , a myxocarpic Asteraceae: Efficient seed imbibition and diaspore adhesion
    OC De‐Paula, J Marzinek, DMT Oliveira, ÉAS Paiva
    American Journal of Botany 102 (9), 1413-1421 , 2015
    2015
    Citations: 17
  • Seed ontogeny of Chamaecrista and its systematic implications in Cassiinae (Leguminosae, Caesalpinioideae)
    OC De-Paula, DMT Oliveira
    Plant Systematics and Evolution 298 (9), 1659-1669 , 2012
    2012
    Citations: 17
  • A new report of phytomelanin in cypselae of Vernonieae: the case of the type species of Lychnophora Mart
    D Marques, J Marzinek, OC De-Paula
    Anais da academia brasileira de ciências 93, e20210204 , 2021
    2021
    Citations: 14
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