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Pharmacobotanical study of Psychotria carthagenensis Jacq. (Rubiaceae), a species known as toxic and medicinal

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Title Pharmacobotanical study of Psychotria carthagenensis Jacq. (Rubiaceae), a species known as toxic and medicinal
 
Creator Santos, Ednalva Alves Vital dos
Lopes-Silva, Rafael Francisco
Silva, Anauara Lima e
Agra, Maria de Fátima
 
Subject Ethnobotany
Leaf anatomy
Medicinal plant
Palicourea
Psycotrieae
Quality control
 
Description 160-166
Psychotria carthagenensis (Rubiaceae), popularly known as “erva-de-rato”, is known as poisonous, and its leaves are
used as a constituent of “ayahuasca”. An anatomical study of its leaves was carried out to define parameters to support its
taxonomy and quality control of ethnodrugs. Transverse and paradermic sections of petioles and leaf blades were made
following the usual techniques of botanical anatomy. All semi-permanent laminas were then analyzed and photographed by
light microscopy. Leaf blades were also studied with the support of the scanning electron microscope. Psychotria
carthagenensis has hypostomatic epidermis, 1-2-stratified, in cross section, with three types of stomata (paracytic, anisocytic
and anomocytic), and predominantly straight anticlinal cell walls, in frontal view, and glandular-peltate trichomes on both
surfaces, the cuticle is smooth and thickened. The leaf edges are acute, mesophyll dorsiventral with the palisade parenchyma
1-seriate, and spongy parenchyma 4-seriate. The midrib is flat-convex with 4 bundles; petiole is semicircular with lateral
projections with 9 vascular bundles. Midrib and petiole have collateral vascular system. Anisocytic and anomocytic stomata,
glandular-peltate trichomes, petiole with the central bundle invaginate at the end, the syntopism of epicuticular waxes are
distinctive parameters for P. carthagenensis, which support the standardization of its leaves used as medicines, in addition to
contributing to the systematic of the Psychotria genus.
 
Date 2023-04-13T12:30:18Z
2023-04-13T12:30:18Z
2023-04
 
Type Article
 
Identifier 0975-1068 (Online); 0972-5938 (Print)
http://nopr.niscpr.res.in/handle/123456789/61742
https://doi.org/10.56042/ijtk.v22i1.33623
 
Language en
 
Relation A01H 6/76
A61K 36/00
A61K 36/74
 
Publisher NIScPR-CSIR, India
 
Source IJTK Vol.22(1) [January 2023]