Aspectos da anatomia foliar de algumas espécies de Paepalanthus Kunth, Eriocaulaceae da Serra do Cipó - Minas Gerais

Castro, Neuza Maria de; Menezes, Nanuza Luíza de

doi:10.1590/s0102-33061995000200003

Cited by 19 publications

(22 citation statements)

References 11 publications

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“…Studies on the anatomy of plants that live in dry, nutrient-poor habitats have shown that these species have xeromorphic characteristics which may prevent water loss (Castro & Menezes 1995). Pteridophytes are outstanding Presl species (Mickel & Lersten 1967).…”

Section: Discussionmentioning

confidence: 99%

Leaf anatomy of two Anemia Sw. species (Schizaeaceae-Pteridophyte) from a rocky outcrop in Niterói, Rio de Janeiro, Brazil

Ribeiro¹,

Santos²,

Moraes³

2007

Rev. bras. Bot.

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-(Leaf anatomy of two Anemia Sw. species (Schizaeaceae-Pteridophyte) from a rocky outcrop in Niterói, Rio de Janeiro, Brazil). The ferns Anemia tomentosa (Sav.) Sw. var. anthriscifolia (Schrad.) Mickel and Anemia villosa Humb. & Bonpl. ex Willd. are widely associated with vegetation islands on rocky outcrops in Rio de Janeiro. Both species are desiccation tolerant. The leaf anatomy of these species was examined aiming to identify morphological characteristics that would allow the establishment of these species in water-scarce environments. The plants were harvested on "Pedra de Itacoatiara" and prepared according to the usual procedures. The petiole has a uniseriate epidermis with lignified cell walls, conical stegmata, and uniseriate multicelular and glandular trichomes.

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Section: Discussionmentioning

confidence: 99%

Leaf anatomy of two Anemia Sw. species (Schizaeaceae-Pteridophyte) from a rocky outcrop in Niterói, Rio de Janeiro, Brazil

Ribeiro¹,

Santos²,

Moraes³

2007

Rev. bras. Bot.

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“…That turns the genus into highly polymorphic, having been besides recognized recently as paraphyletic by Giulietti et al (1995). Some species of Paepalanthus as P. bromelioides, P. microphyllus, P. paulinus, P. robustus, P. scleranthus and P. speciosus were studied by Castro (1986) and Castro & Menezes (1995) who described the anatomy of the vegetative organs, specially of the leaves. Hensold (1988) studied species of the subg.…”

Section: Introductionmentioning

confidence: 99%

Morphology and anatomy of the vegetative organs and scapes from Aphorocaulon (Paepalanthus, Eriocaulaceae)

Scatena

Rosa

2001

Braz. arch. biol. technol.

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“…Na nervura mediana das folhas de Deianira chiquitana é visualizado colênquima subepidér-mico voltado para a face abaxial. Os tecidos mecânicos, especialmente associados aos feixes vasculares, permitem a estabilidade dos tecidos, o não colabamento celular em perí-odos de seca e o suporte contra ação dos ventos constantes em áreas abertas (Castro & Menezes 1995).…”

Section: Discussionunclassified

Morfo-anatomia comparada de espécies da subtribo Coutoubeinae (Chironieae - Gentianaceae)

et al. 2009

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RESUMO -(Morfo-anatomia comparada de espécies da subtribo Coutoubeinae (Chironieae -Gentianaceae)). O objetivo do trabalho é caracterizar a morfo-anatomia do corpo vegetativo de Deianira erubescens, Deianira pallescens, Deianira nervosa, Deianira chiquitana e Schultesia gracilis, visando fornecer subsídios à taxonomia e compreender algumas estratégias adaptativas. Coletaram-se amostras de indivíduos de Deianira no cerrado e de Schultesia no campo rupestre, MG. O material foi processado para observações em microscopia de luz. D. erubescens e D. pallescens apresentam folhas em rosetas e opostas cruzadas, concrescidas na base, ao longo do caule; D. chiquitana apresenta folhas concrescidas na base apenas na região proximal do caule e folhas opostas cruzadas livres; D. nervosa e S. gracilis apresentam folhas opostas cruzadas livres. No gênero Deianira são observadas raízes com crescimento secundário, sendo não usual em D. erubescens e D. nervosa e micorrizas arbusculares (MAs) do tipo Arum, exceto em D. nervosa; caule fi stuloso em D. pallecens; folhas anfi estomáticas e mesofi lo homogêneo, exceto em D. nervosa na qual são observadas folhas hipoestomáticas e mesofi lo dorsiventral. S. gracilis apresenta raízes com aerênquima e MAs do tipo Paris; caule prismático, alado, fi stuloso e folhas hipoestomáticas com mesofi lo homogêneo. Caracteres anatômicos podem ser utilizados para distinção das espécies e podem contribuir para compreender estratégias adaptativas ao cerrado e campo rupestre. Palavras-chave: Anatomia, Deianira, Gentianaceae, Micorriza, Schultesia ABSTRACT -(Compared morphoanatomy of species of the subtribe Coutoubeinae (Chironieae -Gentianaceae)). We characterized the morphology and anatomy of the vegetative body of Deianira erubescens, Deianira pallescens, Deianira nervosa, Deianira chiquitana and Schultesia gracilis to aid in the taxonomy and understanding of adaptive strategies. Samples of Deianira and Schultesia were collected from Cerrado and campo rupestre, MG. The material was processed for observation by light microscopy. D. erubescens and D. pallescens have rosulate, decussate leaves, concrescent at the base along the stem; D. chiquitana has concrescent leaves at the base in the proximal region of the stem and decussate leaves not fused; D. nervosa and S. gracilis have decussate leaves not fused. In the genus Deianira, there are roots with secondary growth, these are not usual in D. erubescens and D. nervosa and Arum-type arbuscular mycorrhizae (AM), except in D. nervosa; stems fi stular in D. pallecens; amphistomatic leaves and homogenous mesophyll, except in D. nervosa where there are hypostomatic leaves and dorsiventral mesophyll. S. gracilis has roots with aerenchyma and Paris-type AM, stem prismatic, winged and fi stular and hypostomatic leaves with homogenous mesophyll. Anatomical characters may be used successfully in the distinction of species and may be used to understand the adaptation to environment.

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Aspectos da anatomia foliar de algumas espécies de Paepalanthus Kunth, Eriocaulaceae da Serra do Cipó - Minas Gerais

Cited by 19 publications

References 11 publications

Leaf anatomy of two Anemia Sw. species (Schizaeaceae-Pteridophyte) from a rocky outcrop in Niterói, Rio de Janeiro, Brazil

Leaf anatomy of two Anemia Sw. species (Schizaeaceae-Pteridophyte) from a rocky outcrop in Niterói, Rio de Janeiro, Brazil

Morphology and anatomy of the vegetative organs and scapes from Aphorocaulon (Paepalanthus, Eriocaulaceae)

Morfo-anatomia comparada de espécies da subtribo Coutoubeinae (Chironieae - Gentianaceae)

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