Stem and leaf anatomy of six species ofVerbenanative to Buenos Aires province, Argentina

Abstract

There are 21 species of Verbena L. in Argentina, six of which are found in the Buenos Aires province: Verbena gracilescens (Cham.) Verter; V. bonariensis L.; V. intermedia Gillies and Hook; V. litoralis Kunth; V. montevidensis Spreng. and V. rigida Spreng. These species are used in popular medicine for their hepatoprotective, digestive, anti-inflammatory, antidiarrheal and healing properties. The stems and leaves of these species were fixed and transverse sections were cut for observation with a light microscope in order to differentiate their anatomical features. Likewise a scanning electron microscope and an environmental scanning electron microscope were used to study the leaf surface of these species. The type and density of stomata and glandular and nonglandular trichomes were analysed in all species, as well as the internal structure of the leaf and stem. The Verbena species of Buenos Aires province have been characterized using these features to help in their identification.

Taxonomic traits in the microstructure of flowers of parasitic Orobanche picridis with particular emphasis on secretory structures

“…The presence or absence of glandular and non-glandular trichomes in Orobanche species as well as their distribution/ location (Table 1), size, shape, structure, secretion pattern, and the composition of synthesised substances can be relevant taxonomic traits facilitating identification of species from this taxon. These traits are used in plant taxonomy to distinguish between closely related species, hybrids, or parasitic weeds (Adedeji et al 2007;Salmaki et al 2009;Morcelle et al 2012;Redonda-Martínez et al 2016).…”

Utilização de planejamento fatorial para a determinação da capacidade antioxidante e doseamento de flavonoides totais em Verbena minutiflora Briq. ex Moldenke (gervai)

“…A p e s a r d e r e l a t o s p o p u l a r e s d a s propriedades fitoterápicas do gênero Verbena (Morcelle et al, 2012), para a investigação científica de suas reais propriedades medicinais é necessário a determinação de seus principais componentes químicos.…”

“…A espécie vegetal V. minutiflora Briq. ex Moldenke, Verbenaceae, popularmente conhecida como Gervão, é facilmente encontrada em terrenos baldios, beiras de estradas e pastagens (Morcelle et al,2012). Pouco se sabe a respeito de suas propriedades medicinais.…”

“…Pouco se sabe a respeito de suas propriedades medicinais. Seu gênero, Verbena, é conhecido popularmente por ser hepatoprotetor, anti-inflamatório e antidiarreico, dentre outras propriedades medicinais (Morcelle et al, 2012). Estudos sobre seus componentes químicos, metabólitos primários e secundários são escassos.…”