scholarly journals Comparative structure of the osmophores in the flowers of Stanhopea graveolens Lindley and Cycnoches chlorochilon Klotzsch (Orchidaceae)

2012 ◽  
Vol 64 (2) ◽  
pp. 15-24 ◽  
Author(s):  
Mirosława Chwil
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
Apical Part ◽  
Ornamental Plant ◽  
Abaxial Surface ◽  
Glandular Hairs ◽  
Anatomical Features ◽  
Cuticular Ornamentation ◽  
Comparative Structure ◽  
Scanning Electron

The genus <i>Tradescantia</i> comprises about 70 species. In Poland <i>Tradescantia x andersoniana</i> is basically grown as an ornamental plant that is recommended for borders and to be planted around garden ponds. The present study investigated flowering as well as the micromorphological and anatomical features of some floral elements of <i>Tradescantia x andersoniana</i> W. Ludw. Rohweder 'Karin'. The macro- and micromorphology of the flowers was examined using stereoscopic, light, and scanning electron microscopy (SEM). Spiderwort produces flowers with a diameter of 4.6-5 cm, which open early in the morning and close at noon. Non-glandular and glandular hairs grow on the abaxial surface of the calyx and on the apical part of the ovary. The glandular hairs develop a several-celled stalk and a unicellular spherical or elongated head. The staminal filaments produce chain-shaped trichomes. Striate cuticular ornamentation is found on their surface and on the epidermis covering the perianth. The striae on the cells of the stamen hairs run to the two poles of the cell. The pistil develops a wet stigma with unfused unicellular papillae. The cuticle on their surface is smooth, whereas on the style near the stigma it forms dense folds.

scholarly journals Contribution to the identification of the species Myrcia hatschbachii D. Legrand (Myrtaceae): anatomical and histochemical analyses

2021 ◽  
Vol 43 ◽  
pp. e75
Author(s):  
Larissa Junqueira Gatto ◽  
Vanessa Barbosa Bobek ◽  
Jane Manfron Budel ◽  
Natasha Tiemi Fabri ◽  
Josiane De Fatima Gaspari Dias ◽  
...  
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
Phenolic Compounds ◽  
Vascular Bundle ◽  
Folk Medicine ◽  
Spongy Parenchyma ◽  
Anatomical Features ◽  
Arc Shape ◽  
Histochemical Tests ◽  
Scanning Electron

The genus Myrcia is used in folk medicine to treat diabetes. The plants used in folk medicine require morphological and anatomical references to attest to its authenticity. This is the first report of the microscopic study of Myrcia hatschbachii. In this sense, the aim of the present study was to describe the anatomical characteristics, in order to contribute to the species' identification. For anatomical and surface analyses free-hand sections were prepared and observed using optical microscopy, simultaneously some materials were processed and observed under scanning electron microscopy. In addition, histochemical tests were performed. The anatomical features described here correspond with previously reported features found in other species of the genus Myrcia. Furthermore, the following anatomical markers were observed in Myrcia hatschbachii: druses in the spongy parenchyma, concave-convex midrib, heart-shaped petiole, oval-shaped stem, C-shaped vascular bundle in the midrib and open arc shape with invaginated ends in the petiole; phenolic compounds in the phloem and lignified cells in the pith. The results of anatomical and histochemical analyses provide micromorphological and microchemical features that can help in the taxonomy and proper identification of the species.

scholarly journals Morphological differentiation and distribution of non-glandular and glandular trichomes on Dracocephalum moldavicum L. shoots

2012 ◽  
Vol 63 (1) ◽  
pp. 11-22 ◽  
Author(s):  
Elżbieta Weryszko-Chmielewska ◽  
Marta Dmitruk
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
Glandular Trichomes ◽  
Morphological Differentiation ◽  
Structural Variations ◽  
Abaxial Surface ◽  
The Rich ◽  
Trichome Types ◽  
Scanning Electron

The structure, micromorphology and distribution of trichomes on <i>Dracocephalum moldavicum</i> L. shots were investigated using light and scanning electron microscopy (SEM). There were distinguished 3 types of non-glandular trichomes, 3 types of glandular trichomes and papillae of the osmophore in the epidermis of the corolla. The highest density of non-glandular and glandular trichomes was found on the abaxial surface of the calyx, on bracts and in the upper part of the stem. Structural variations in the head and stalk of long glandular trichomes were demonstrated. The dimensions of particular types of trichomes are given in the present paper. Differences in the structure of the trichomes of this species are presented, compared to literature data. The micromorphology of particular trichome types is documented in numerous photographs showing the rich ornamentation of the cuticle of non-glandular trichomes.

Micromorphological observations on lemma and palea surface of Bromus (Poaceae) in Iran

Phytotaxa ◽  
2021 ◽  
Vol 508 (1) ◽  
Author(s):  
SAMANEH MOSAFERI ◽  
MARYAM KESHAVARZI
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
Cell Wall ◽  
Species Delimitation ◽  
Abaxial Surface ◽  
Ploidy Levels ◽  
The World ◽  
Close Relationship ◽  
Qualitative Characters ◽  
Scanning Electron

Bromus (Poaceae) includes more than 160 species of mesophytic and xerophytic grasses from temperate regions of the world, of which 39 occur in Iran. The genus is considered taxonomically problematic due to the occurrence of hybridization, variation in ploidy levels, and phenotypic plasticity. Moreover, morphological similarities make species delimitation difficult. It resulted in different taxonomic classifications proposed along the time. Thus, in order to contribute to a better understanding of the species of Bromus, 21 species from six different sections of Bromus occurring in Iran were evaluated micromorphologically. The abaxial surface of the lemma and palea of the lowermost florets were examined using Scanning Electron Microscopy (SEM). Twenty-three quantitative and qualitative characters were analysed using PAST software. Lemma characters such as shape of silica cells, cork cells, crown cells, outline of long cell wall, and long cell length, and palea characters such as shape of cork cells, silica cells, and outline of long cell wall were informative among species studied. In UPGMA clustering most species were aggregated according to the previously delimited sections demonstrating the taxonomic value of micromorphological features in the species studied. Two sections Bromus and Genea showed a close relationship whereas two sections Ceratochloa and Pnigma were placed in one cluster close to the cluster including section Boissiera. The only exception was B. japonicus which was resolved within cluster of sect. Genea, not in cluster of sect. Bromus.

scholarly journals Comparative morphology and anatomy of seeds of some Aethionema W.T. Aiton (Brassicaceae) taxa from Turkey

2019 ◽  
Vol 26 (1) ◽  
pp. 1-12 ◽  
Author(s):  
Mehmet Cengiz Karaismailoğlu
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
Principal Component Analysis ◽  
Principal Component ◽  
Comparative Morphology ◽  
Seed Morphology ◽  
Anatomical Features ◽  
Major Significance ◽  
Surface Patterns ◽  
Scanning Electron

Seed morphology and anatomy are taxonomically significant in Brassicaceae. The seed structures of Aethionema from Turkey, which include 12 taxa (Aethionema syriacum, A. froedinii, A. arabicum, A. eunomioides, A. fimbriatum, A. speciosum subsp. speciosum, A. speciosum subsp. compactum, A. saxatile, A. oppositifolium, A. iberideum, A. armenum, A. grandiflorum) were studied for knowing seed morphological and anatomical features with one-way analysis of variance, cluster analysis and principal component analysis. Seed size, shape and color were examined with stereomicroscopy.The surface patterns of seed were observed using Scanning Electron Microscopy (SEM). In addition, structure, and thicknesses of testa and endosperm were investigated anatomically. Thickness of testa and endosperm were of major significance to illustrate interspecific relations among the examined taxa.

scholarly journals Comparative leaf anatomy of neotropical Stylogyne species (Myrsinoideae - Primulaceae)

Rodriguésia ◽  
2013 ◽  
Vol 64 (4) ◽  
pp. 717-726 ◽  
Author(s):  
Bruna Nunes de Luna ◽  
Tatiana Tavares Carrijo ◽  
Maria de Fátima Freitas ◽  
Claudia Franca Barros
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
Optical Microscopy ◽  
Leaf Anatomy ◽  
Vascular System ◽  
Anatomical Studies ◽  
Diagnostic Characteristics ◽  
Secretory Cavities ◽  
Cuticular Ornamentation ◽  
Scanning Electron

Anatomical studies were performed here in order to provide diagnostic characteristics to differentiate the species Stylogyne depauperata, S. pauciflora, S. sordida and S. warmingii. Fully expanded leaves were processed by the usual techniques of optical microscopy and scanning electron microscopy. Traits common to all species were observed, such as dorsiventral mesophyll, unistratified epidermis, anisocytic stomata, druses and secretory cavities distributed throughout the mesophyll. Cuticular ornamentation, configuration of the vascular system in the petiole and shape of the secretory cavities provide diagnostic characteristics. Variance analysis proved that these characters are potentially efficient to differentiate these species.

scholarly journals Structural features of flower trichomes in drug eyebright (Euphrasia stricta D. Wolff EX J. F. Lehm.)

2014 ◽  
Vol 66 (4) ◽  
pp. 35-44 ◽  
Author(s):  
Weronika Haratym ◽  
Elżbieta Weryszko-Chmielewska
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
Glandular Trichomes ◽  
Folk Medicine ◽  
Structural Features ◽  
Raw Material ◽  
Wall Thickening ◽  
Anatomical Features ◽  
Ophthalmic Diseases ◽  
Scanning Electron

<em>Euphrasia stricta </em>D. Wolff ex J. F. Lehm. (Orobanchaceae) is a representative of plants that are widely used in folk medicine, phytomedicine, and homeopathy. The medicinal raw material derived from the drug eyebright is applied primarily in treatment of ophthalmic diseases. The investigations of trichomes in drug eyebright (<em>Euphrasia stricta </em>D. Wolff ex J. F. Lehm) were conducted in 2010–2011. Using light microscopy and scanning electron microscopy, their location and morphological and anatomical features were identified. Three types of non-glandular trichomes were found: short unicellular, long 1–2 celled, and long 2-celled with wall ornamentation. Additionally, 7 types of glandular trichomes were found; these included: unicellular clavate, 2–3-celled clavate, capitate with a unicellular head and a 3-cel- led stalk, capitate with a unicellular head and a 2-celled stalk, capitate with a 2-celled head, conical papillae, and ribbon-like trichomes with wall thickening.

scholarly journals Anatomy and trichome micromorphology of Stachys scardica (Griseb.) Hayek (Lamiaceae)

2014 ◽  
Vol 66 (3) ◽  
pp. 1217-1226 ◽  
Author(s):  
Slavica Grujic ◽  
Sonja Duletic-Lausevic ◽  
Ana Dzamic ◽  
P.D. Marin
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
Anatomical Structure ◽  
Vegetative Organs ◽  
Anatomical Features ◽  
Leaf Petiole ◽  
Plant Parts ◽  
Peltate Trichomes ◽  
Stem Leaf ◽  
Scanning Electron

The anatomy and micromorphology of the vegetative organs and calyx of Stachys scardica (Griseb.) Hayek were investigated using light (LM) and scanning electron microscopy (SEM). The analysis of the anatomical structure of stem, leaf and leaf petiole showed the presence of an additional adaxial phloem in the vascular bundle of the petiole that was recorded exclusively in species belonging to the subgenus Betonica. On the surface of studied plant parts, three types of trichomes were found: simple nonglandular uniseriate multicellular, nonglandular branched elongated and glandular peltate trichomes. The present study shows that certain micromorphological and anatomical features of Stachys taxa are valuable taxonomic characters.

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