Leaf and stem microscopic identification of Tithonia diversifolia (Hemsl.) A. Gray (Asteraceae)
Tithonia diversifolia (Hemsl.) A. Gray is an Asteraceae shrub, popularly known as Mexican sunflower and cultivated for ornamental and therapeutic uses in different countries. In folk medicine, it is of value for treating diabetes, malaria and infectious diseases. These indications have been corroborated by various pharmacological assays. Given the lack of data on anatomical aspects of T. diversifolia, this work aimed to investigate the leaf and stem microscopic characters of this medicinal plant and potential vegetal drug. Samples of mature leaves and young stems were sectioned and stained. Histochemical tests and scanning electron microscopy were also performed. The leaf has anomocytic stomata on both sides, dorsiventral mesophyll and several collateral vascular bundles arranged as a ring in the midrib. The stem shows angular-tangential collenchyma, an evident endodermis and sclerenchymatic caps adjoining the phloem. The main characters for anatomical identification are the different types of trichome (non-glandular, capitate and non-capitate glandular), the midrib features and the localization of the secretory ducts near the vascular system.
Main Authors: | Duarte,Márcia do Rocio, Empinotti,Cláudia Bonissoni |
---|---|
Format: | Digital revista |
Language: | English |
Published: |
Universidade de São Paulo, Faculdade de Ciências Farmacêuticas
2012
|
Online Access: | http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1984-82502012000100013 |
Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
Similar Items
-
ADICIONES ALCONOCIMIENTO CITOGENÉTICO DE TITHONIA DIVERSIFOLIA (HEMSL.) A.GRAY(ASTERACEAE)
by: ALCORCÉS de GUERRA, Nilda, et al.
Published: (2011) -
Adiciones al conocimiento citogenético de tithonia diversifolia (HEMSL.) A. gray (asteraceae)
by: de Guerra,Nilda Alcorcés, et al.
Published: (2007) -
Use of Tithonia diversifolia (hemsl.) A. Gray in the diet of growing lambs
by: Cadena-Villegas,S., et al.
Published: (2020) -
Potential of Tithonia diversifolia Hemsl. A Gray as forage for the production of dairy cows.
by: Gallego-Castro, Luis Alberto, et al.
Published: (2014) -
Propagación vegetativa de procedencias de Tithonia diversifolia (Hemsl) A. Gray en el Noreste de Argentina = Vegetative propagation of Tithonia diversifolia (Hemsl) A. Gray provenances in northeast Argentina
by: Rossner, Maria Belen, et al.
Published: (2019-09-24)