Intraspecific Variation in Four Distinct Populations of Anemia villosa Humb. &amp; Bonpl. ex Willd. (Anemiaceae) Occurring in Rio de Janeiro, Brazil

Ribeiro, Maria Luiza Ribeiro da Costa; Santos, Marcelo Guerra; Barros, Cláudia Franca; Costa, Cristiane Maria Amorim

doi:10.1640/0002-8444-101.2.70

Cited by 1 publication

(1 citation statement)

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“…The homogenous-type mesophyll with spongy parenchyma found in A. elegans commonly occurs in species growing in shaded environments (Graçano et al 2001), as it allows for optimized use of solar radiation (Larcher 2000), increasing photosynthetic efficiency (DeLucia et al 1996). On the other hand, the dorsiventral mesophyll usually occurs in species of Anemia from rocky outcrops (Ribeiro et al 2007(Ribeiro et al , 2011.…”

Section: An Acad Brasmentioning

confidence: 99%

Structural and histochemical aspects in leaves of six species of Anemia (Anemiaceae) occurring in rocky outcrops

Neto

Silva

Furtado

et al. 2022

An. Acad. Bras. Ciênc.

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Rocky outcrops are known for low humidity, rainfall and high solar radiation, factors that limit the development of some vegetables. However, some species of the genus Anemia occurring in these environments. Thus, understanding the anatomical characters present in these vegetables are important for botanical and biodiversity knowledge in rock fi elds. We described the leaf anatomy of six species of Anemia to identify characters adapted to rocky outcrops for ferns. Herbarium samples were rehydrated. Field-collected leaves, were also sampled, the material was subjected to standard anatomical study by light microscopy, and secretions were evaluated by histochemical of the secondary compounds, with ruthenium red, tannic acid, ferric chloride, lugol, Sudan black B, vanillin/hydrochloric acid, Dragendorff's reagent and ponceau xylidine. Histochemical tests were positive for phenolic compounds, alkaloids, polysaccharides, and proteins in A. buniifolia, A. oblongifolia, A. presliana, and A. trichorhiza. Our fi ndings revealed that several structural and histochemical characters of Anemia with trichomes, conical stegmatas, phenolic compounds, mucilages and alkaloids are related to reducing water loss, providing an adaptive value to species in extreme environments, such as rocky outcrops, in addition to new data relevant to the group taxonomy, such as the presence of amphistomatic leaves in A. trichorhiza.

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