Flora of Ceará, Brazil: Cabombaceae

Matias, Lígia Queiroz; Nascimento, Hugo Pereira do

doi:10.1590/2175-7860202172009

Rodriguésia

2021

DOI: 10.1590/2175-7860202172009

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Flora of Ceará, Brazil: Cabombaceae

Lígia Queiroz Matias

Hugo Pereira do Nascimento

Abstract: The present study analyzed taxa of the family Cabombaceae occurring in the state of Ceará. Only Cabomba species was represented, with C. aquatica and C. haynesii recorded in the state. Populations occur in permanent and temporary lentic environments, such as lagoons and shores of lotic systems. This work presents taxon identification keys, morphological descriptions, illustrations, comments and geographic distribution data.

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2024

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Cited by 2 publications

References 25 publications

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Stipules in angiosperms

Ye,

Ronse De Craene

2024

Botanical Journal of the Linnean Society

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Stipules are generally regarded as the outgrowths of the leaf base in angiosperms. Other interpretations see stipules as independent organs comparable to leaves. Stipules have been recognized as an important trait for plant taxonomy and identification, and there has been great progress in the understanding of their morphology, development, origin, function, and gene regulation over time. Therefore, this review will briefly summarize past research and aims to clarify the occurrence, location, and morphology of stipules in the families recognized by APG IV and reconstruct their ancestral states. Additionally, the developmental morphology of different types of stipule is presented through scanning electron microcopy observations and a survey of the existing literature. The difference between stipules and ligules is discussed in relation to the occurrence of postgenitally or congenitally fused ‘continuous’ stipules. A distinction is made between ‘true’ stipules and ‘pseudostipules’. The origin of stipules at the base of the leaf is explained from different perspectives. About one-third of the families are reported to have stipules, mostly concentrated in the Rosid clade with the highest level of diversity. On the basis of the ancestral state reconstructions, stipules may be absent in the ancestors of angiosperms, but are present in the ancestor of Rosids, with a pair appearing on both sides of the petiole base. The transition between paired and annular stipules is discussed, the latter arising postgenitally or congenitally. Several hypotheses are discussed to explain the abundance of stipules in the Rosid clade and their limited presence in the Asterid clade.

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Stipules in angiosperms

Ye,

Ronse De Craene

2024

Botanical Journal of the Linnean Society

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Lagoons, rivers, weirs and their wet gardens in the semiarid: aquatic Eudicotyledons and Ceratophyllaceae of Ceará state, Brazil

Guedes,

Sousa,

Abreu

et al. 2022

Rodriguésia

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Ceará state holds the second largest wetland extension in Northeastern Brazil and, thus far, there have been taxonomic studies developed about aquatic macrophytes richness for the clades of Monocots and Nymphaeales, and of two Eudicot families only. In this context, the present study is a synopsis of the aquatic representatives of Eudicotyledons and Ceratophyllaceae in Ceará state, providing further information about the biodiversity of aquatic ecosystems in the Brazilian semiarid. We present an updated survey based on material deposited at the EAC, IPA, R and RB herbaria and on images from digital platforms, including diagnostic descriptions, identification keys, photographs and comments about geographic distribution. We recorded 28 families, 43 genera and 82 species. The most representative families were Lentibulariaceae (12 spp.), Malvaceae (9 spp.), Plantaginaceae (9 spp.), Fabaceae (8 spp.) and Onagraceae (7 spp.), whilst Ceratophyllaceae was represented by one species only. Helophytes were the predominant growth form (64%), followed by the bottom-rooted emergent hydrophytes (20%), and Podostemaceae was the only family represented by haptophytes (4 spp.).

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Flora of Ceará, Brazil: Cabombaceae

Cited by 2 publications

References 25 publications

Stipules in angiosperms

Stipules in angiosperms

Lagoons, rivers, weirs and their wet gardens in the semiarid: aquatic Eudicotyledons and Ceratophyllaceae of Ceará state, Brazil

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