Morfoanatomia de Memora nodosa (Silva Manso) Miers, Bignoniaceae

Abstract

RESUMO:Memora nodosa (Silva Manso) Miers, Bignoniaceae, é uma planta do Cerrado utilizada popularmente como cicatrizante de úlceras e feridas externas (folhas e caules). O objetivo deste trabalho foi caracterizar morfologicamente essa espécie e fazer o estudo anatômico de suas folhas. O estudo morfológico foi realizado à vista desarmada e com o auxílio de microscópio estereoscópico. Para o estudo anatômico as folhas foram seccionadas e as lâminas histológicas confeccionadas de acordo com as técnicas convencionais. Memora nodosa é um arbusto com folhas opostas cruzadas, recompostas, bipinadas, imparipinadas, com foliólulos pequenos, lanceolados, verde-escuros e brilhantes. A inflorescência é racemosa com flores infundibuliformes e corola amarelo-ouro; glândulas nectaríferas são observadas no terço superior do cálice; androceu com quatro estames férteis, didínamos e um estaminódio reduzido; gineceu com estilete terminal, ovário súpero, assentado sobre um disco nectarífero. O fruto é do tipo cápsula septífraga achatada, com sementes aladas. Anatomicamente a lâmina do foliólulo é hipoestomática com estômatos predominantemente paracíticos. O parênquima paliçádico é pluriestratificado, ocupando cerca de dois terços do mesofilo dorsiventral. Tricomas glandulares e tectores são observados, em maior número, nas folhas jovens.Unitermos: Plantas medicinais, Cerrado, Bignoniaceae, morfoanatomia.ABSTRACT: "Morpho-anatomy of Memora nodosa (Silva Manso) Miers, Bignoniaceae." Memora nodosa (Silva Manso) Miers, Bignoniaceae, is a Brazilian Savannah plant, popularly used as external wound and ulcer healing (leaves and stems). The goal of this research was to perform the morphological study of M. nodosa species and the anatomical study of its leaves. The morphological study was done to the naked eye and with the aid of a stereoscopic microscope. For the anatomical study leaves were sectioned and histological slides made in accordance with conventional techniques. Memora nodosa is a shrub with decussate leaves recomposed, bipinnate, imparipinnate with small leaflets, lanceolate, dark green and shining. The inflorescence is racemose with infundibuliform flowers and gold yellow corolla; nectar glands are observed in the upper third calyx; androecium with four fertile stamens, didynamus and one staminode; gynoecium with terminal style, superior ovary, seated on a nectary disc. The fruit is flattened septifragal capsule with winged seeds. Anatomically, the blade leaflet is hypostomatic with predominantly paracytic stomata. The palisade parenchyma is pluriseriate, occupying about two thirds of the dorsiventral mesophyll. Glandular and non-glandular trichomes are observed in greater numbers in the young leaves.

The Influence of Fire and Deforestation on the Floral Symmetry and Fitness of Adenocalymma nodosun (Bignoniaceae)

“…Adenocalymma nodosum is a caespitose shrub with flexible branches up to 2 m high (Tresvenzol et al, 2010). Its leaves are petiolate, bi or tripinnate and imparipinnate, its leaflets are narrow and lanceolate, sessile when simple, petiolate when they are compound leaflets and the flowers arise in the axils of bracts (Sampaio et al, 2016).…”

Toxicity effects of ethanol extract of Simarouba versicolor on reproductive parameters in female Wistar rats

“…Medicinal plants are important and they supply raw materials to synthetize medicines, besides being used as therapeutics. The use of plants is overvalued traditionally based on their medicinal benefits, and often they are the only therapeutic resource of many communities and ethnic groups (Tresvenzol et al, 2006;Garcia et al, 2010). Herbal remedies are often indiscriminately ingested during pregnancy due to popular belief that natural products are not harmful to health.…”