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Erratum to: Micro-morphological study of Evolvulus spp. (Convolvulaceae): the old world medicinal plants

Authors:
Ketjarun et al. Bot Stud (2016) 57:29
DOI 10.1186/s40529-016-0144-8
ERRATUM
Erratum to: Micro-morphological study
ofEvolvulus spp. (Convolvulaceae): the old
world medicinal plants
Kanapol Ketjarun1, George W. Staples2, Sasivimon C. Swangpol1 and Paweena Traiperm1*
© 2016 The Author(s). This article is distributed under the terms of the Creative Commons Attribution 4.0 International License
(http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium,
provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license,
and indicate if changes were made.
Erratum to: Bot Stud (2016) 57:25
DOI 10.1186/s40529‑016‑0141‑y
In the publication of this article [1], there was an error
in the Abstract section which was published with incor-
rect pollen size results. e error: ‘Pollens of all taxa are
monads, spheroidally shaped with 28–457 µm diameter,
and 15-pantocolpate apertures type with microechinate
ornamentation.’ Should instead read: ‘Pollens of all taxa
are monads, spheroidally shaped with 28–47 µm diam-
eter, and 15-pantocolpate apertures type with microechi-
nate ornamentation.’ is has now been updated in the
original article [1].
Author details
1 Department of Plant Science, Faculty of Science, Mahidol University, Rama
VI Road, Ratchathewi, Bangkok 10400, Thailand. 2 Herbarium, Royal Botanic
Gardens, Kew, Richmond, Surrey TW9 3AE, UK.
Open Access
*Correspondence: paweena.tra@mahidol.edu
1 Department of Plant Science, Faculty of Science, Mahidol University,
Rama VI Road, Ratchathewi, Bangkok 10400, Thailand
Full list of author information is available at the end of the article
The online version of the original article can be found under
doi:10.1186/s40529-016-0141-y.
Received: 10 October 2016 Accepted: 10 October 2016
Reference
1. Ketjarun K, Staples GW, Swangpol SC, Traiperm P (2016) Micro-morpho-
logical study of Evolvulus spp. (Convolvulaceae): the old world medicinal
plants. Bot Stud 57:25. doi: 10.1186/s40529-016-0141-y
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This research presents the results of the morphological-anatomical study of grass organs above ground (leaves, stems, and flowers) from Sideritis taurica Steph. ex Willd. from the Lamiaceae family. The range of distribution of this species covers Eastern Europe, including Crimea, Caucasus. This plant is commonly found as an ornamental plant and grows in the southern and central regions of Russia. The purpose of this study is the anatomical and morphological study of the vegetative organs of S. taurica and the formation of diagnostic signs for reliable plant identification. The research material used was S. taurica herbicide samples collected in Crimea on the slopes of Mount Ay-Petri. Plant material is fixed in the glycerin : water system in a ratio of 1 : 1. Cross-section of stems and leaves is carried out using blades. The study was conducted with the morphological-anatomical method. The results obtained indicate the anatomical structure of the lamina, stem, and flower of the plant that has been studied. Anomocytic types of stomatal devices, unicellular and multicellular trichomes, located on the upper and lower sides of the leaf, as well as on the corolla stem and epidermis, have been discovered. The study carried out is part of the S. taurica complex pharmacognostic study.
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An anatomical analysis of Evolvulus glomeratus (Convolvulaceae) specimens revealed a new species endemic to a rock outcrop in Pernambuco State, which is described and illustrated herein. Evolvulus saxatilis differs from Evolvulus glomeratus based on morphological and anatomical characters, including corolla and ovary shape, presence of epidermal vesicles in the anthers, boundaries of the anticlinal walls of the seed epidermal cells, sculpture of the periclinal walls, arrangement of xylem vessel elements, presence of pericycle lignification, mesophyll type, and presence of crystalliferous idioblast. A complete description, diagnosis, illustration, distribution map, and taxonomic comments are provided.
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Background Several medicinal properties have been reported for plants in the genus Evolvulus, such as a brain tonic and antifungal from Evolvulus alsinoides, and a sedative and an anthelmintic from Evolvulus nummularius. Therefore, the correct identification of the source plants is critically important. The aim of this research was to investigate the micromorphology of two Evolvulus taxa used for herbal medicines compared with one worldwide ornamental species by using peeling, paraffin embedding, acetolysis, and SEM methods in order to support species identification. ResultsOur findings indicate that all taxa share several common features, such as a single layer of epidermis on both sides of leaf surfaces, sinuous anticlinal epidermal cell walls, anomocytic, paracytic or laterocytic stomata, and capitate glandular trichomes. Y-shaped hairs were found in two species but not in E. nummularius. Similarly, isobilateral mesophyll occurs in both E. alsinoides and Evolvulus glomeratus, but a dorsiventral mesophyll is present in E. nummularius. Stems consist of a single layer of epidermis, one to four chlorenchyma layers, one to seven layers of cortical cells and a bicollateral bundle with pith in the center. The seed coat epidermal cell shapes were irregular or polygonal with raised and undulated anticlinal boundaries, and folded or flattened to concave periclinal walls. Pollens of all taxa are monads, spheroidally shaped with 28–457 µm diameter, and 15-pantocolpate apertures type with microechinate ornamentation. Conclusions An identification key to species is constructed based on leaf anatomy and seed coat characters. This data can be used in other subjects such as pharmaceutical botany, organic chemistry, taxonomy and horticulture, in terms of species identification.
Micro-morphological study of Evolvulus spp. (Convolvulaceae): the old world medicinal plants
  • K Ketjarun
  • G W Staples
  • S C Swangpol
  • P Traiperm
Ketjarun K, Staples GW, Swangpol SC, Traiperm P (2016) Micro-morphological study of Evolvulus spp. (Convolvulaceae): the old world medicinal plants. Bot Stud 57:25. doi: 10.1186/s40529-016-0141-y