Acta Botanica Hungarica

Book reviews

2019-01-08T11:38:34+01:00

Nomina nonnulla nova familiae Rubiacearum florae Mexicanae

2019-01-08T11:38:33+01:00

Two species was desribed as new ones and published in the second edition of the monograph: Rubiáceas de México utilized illegitimate names which turned to be invalid synonyms (Govaerts et el 2016). These are rectified in the following paper.

Jamaicanthus, a new endemic genus of Jamaica (Rondeletieae, Rubiaceae) and Rondeletia a model for the Gaarlandia theory

2019-01-08T11:38:33+01:00

Jamaicanthus, a new monotypic endemic genus of the tribe Rondeletieae (Rubiaceae) in the flora of Jamaica is described based on Rondeletia laurifolia Sw. It is interpreted as a new important argument supporting the Gaarlandia theory.

Addiciones y correcciones a la monografía Rubiáceas de Cuba

2019-01-08T11:38:33+01:00

An important molecular-phylogenetic monography appeared about the Chiococceae tribe of the Caribbean region by Paudyal and al. (2018) proposing several new taxonomic modifying decisions concerning also to the monographic treatment of the recently (2017) published Rubiáceas de Cuba, as the confirmation and extension of the genus Solenandra revalidated by Borhidi (2002) and the separation of the new endemic Cuban genus Ramonadoxa Paudyal and Delprete from Chiococca. The molecular-phylogenetic studies did not verify the separation of Ceuthocarpus Aiello from Schmidtottia Urb. neither Phyllacanthus Hook.f. as independent genus from Catesbaea L.

Leaf epidermal micro-morphology of the genus Hypericum L. (Hypericaceae) from Iran

2019-01-08T11:38:33+01:00

Foliar micro-morphological characters of 17 species of Hypericum L. belonging to five sections, Androsaemum (Duhamel) Godron, Hypericum, Hirtella Stef. (Including 2 subsections: Platyadenum N. Robson and Stenadenum N. Robson), Taeniocarpum Jaub. & Spach. and Drosanthe (Spach) Endl. were examined using scanning electron microscopy (SEM). Based on the current result three types of epidermal cell shape (irregular polygonal, roughly regular rectangular and irregular elliptical); four types of papilla (triangular, with striate wall, finger and star shapes); two main types and three subtypes of epicuticulare wax; seven type classes of outerstomatal and peristomatal rims/stomata ledge aperture; three types of wax distribution on the stomata rims/pore/epidermal cell and three types of inner stomatal rims variations (smooth, sinuolateandsinuolate-erose) were identified. The result revealed that leaf micro-morphological evidences of Hypericumare taxonomically informative and can be used for separating different sections and species.

Pioneer Lichen Communities of the Teteriv River Basin (Ukraine)

2019-01-08T11:38:33+01:00

The results of phytosociological studies of pioneer lichen communities of siliceous outcrops carried out in 2014–2016 in Teteriv River basin (Ukraine) are provided. The dataset of 302 relevés was analyzed, 6 associations and 1 subassociation from 3 classes were distinguished as a result of the phytosociological survey in the Teteriv River basin. Four associations, i.e.: Aspicilietum contortae Kaiser ex Klement 1955, Cladonietum mitis Krieger 1937, Parmelietum conspersae Hilitzer 1925, Parmelietum somloensis Wirth 1995 and the alliance Aspicilion calcareae Albertson ex Roux 1978 are new for Ukraine, and new association Aspicilio cinerei–Ramalinetum pollinariae Kapets et Khomyak ass. nov. is described here.

Coppinsiella and Seawardiella – two new genera of the Xanthorioideae (Teloschistaceae, lichen-forming Ascomycota)

2019-01-08T11:38:33+01:00

Two new monophyletic clades in the subfamily Xanthorioideae, identified in phylogenetic analyses based on ITS nrDNA, 28S nrLSU and 12S mtSSU sequences, are here proposed as the new genera Seawardiella and Coppinsiella. Seawardiella encloses the species complex Caloplaca lobulata s. lat., also known as the Xanthoria lobulata group sensu Steiner & Poelt, whereas Coppinsiella encloses the earlier Caloplaca ulcerosa group. Closest relatives are the genera Orientophila, Athallia, Flavoplaca and Calogaya. Similarities, and diverging characters are discussed. Four new combinations, i.e.: Coppinsiella orbicularis (M. Haji Moniri, Vondrák & Malíček), C. substerilis (Vondrák, Palice & van den Boom), C. ulcerosa (Coppis & P. James). and Seawardiella lobulata (Flörke) are proposed in the subfamily Xanthorioideae. Two new combinations i.e., Lazarenkoella persica (J. Steiner), and L. polycarpoides (J. Steiner) are proposed in the subfamily Brownlielloideae. One new species, Seawardiella tasmaniaensis is described, illustrated and compared with closely related taxa.

Assessment of the credibility of public websites about medicinal herbs

2019-01-08T11:38:34+01:00

In recent decades, there has been a growing interest in the use of herbs and herbal medicinal products, both in developing and developed countries. While electronic medium has become a more and more important tool for presenting information about health-related issues, several studies demonstrated that the internet often contains inaccurate and/or misleading information. In our study we assessed 30 Hungarian websites and 2 cellphone applications intended for public use and evaluated the quality and credibility of the information presented about medicinal plants recommended. It was found that websites showed very diverse safety: most websites gave mixed information, that is, some medicinal herbs and their potential hazard were properly described while others were not. There were, however, websites which completely missed to give information about any potential hazard. As credibility of public websites can be in most cases questioned, it is strongly recommended for potential users to consult more than one source of information.

SPECIES DIFFERENTIATION IN ANNUAL PERSICARIA BASED ON DIFFERENT MARKERS

2019-01-08T11:38:34+01:00

Persicaria with 70-100 species in the world is distributed in temperate regions of both hemispheres. It has 11 species in Iran growing in moist areas and margins of rivers. Through hybridization, plasticity and existence of overlapping habitats, species identification shows difficulty. In this study, we aimed to investigate karyotype characters and morphological features, evaluate genetic variability within and among species studied and examine species relationship using ISSR and CP DNA data. Nine annual taxa of Persicaria were gathered from different localities in Iran and used for studies. Our studies showed that combination of karyological, morphological and molecular data can delimit species studied. Based on karyological results, three chromosome counts (P. hydropiper (2n=2x=20), P. maculosa (2n=2x=22), P. orientalis (2n=2x=22)) were the first reports for the Flora of Iran. Analyses of morphological characters showed diagnostic features among taxa. STRUCTURE and AMOVA analyses showed high intraspecific genetic diversity. Our results suggested that phenotypic plasticity and hybridization may cause genetic diversity within Persicaria species.

UNA NUEVA ESPECIE DEL GÉNERO ESENBECKIA (RUTACEAE) DEL ISTMO DE TEHUANTEPEC, MÉXICO

2019-01-08T11:38:34+01:00

Se describe una nueva especie del género Esenbeckia Kunth (Rutaceae) procedente del Istmo de Tehuantepec, México. Esta nueva especie se encontró conviviendo con E. collina Brandegee.

THE GENUS COLURA SECTION GLOTTA (LEJEUNEACEAE, MARCHANTIOPHYTA) IN THAILAND

2019-01-08T11:38:34+01:00

The genus Colura (Dumort.) Dumort. sect. Glotta Grolle et R.L.Zhu in Thailand is studied based on herbarium specimens and especially on recently collections. The section is reported for the first time from Thailand. Two species are recognized, namely C. bisvoluta Herzog et Jovet-Ast and C. karstenii K.I.Goebel. Descriptions, illustrations, and a key to species are provided.

Statistical evaluations of morphological and anatomical characteristics of Dracocephalum thymiflorum (Lamiaceae) populations in Iran

2019-01-08T11:38:34+01:00

Abstract

Dracocephalum (dragonhead) with about 60 to 70 species is mostly annual or perennial herbs or subshrubs. These species have medicinal values including anticancer, antioxidant, antihypoxic and immunomodulatory activities. Dracocephalum thymiflorum L. grows in limitted areas in Iran and forms few local populations and extensively used by locals. We have no information available about anatomical and morphological study of these medicinal species in the country. We based on morphological and anatomical data separated some of these populations from the others suggesting the existence 2 variety within this species.

On new paths in vegetation science and landscape ecology: im memoriam Prof. Gábor Fekete

2020-02-04T15:44:24+01:00

No abstract.

GENETIC DIVERSITY AND POPULATION GENETIC STRUCTURE OF THE ENDANGERED KAZAKH ENDEMIC OXYTROPIS ALMAATENSIS BAJT. (FABACEAE)

2020-02-04T15:46:10+01:00

The central Asian narrow endemic species Oxytrips almaatensis is a highly endangered plant with a very restricted distribution in the Tian Shan Mountains. In this study, we present the basic conservation genetic characteristics of this species based on a DNA-fingerprinting approach in order to provide yardsticks for official conservation agencies to develop an informed conservation strategy. The three currently known populations with two allopatric subpopulations at each site were sampled in the Trans-Ili Alatau Mountains (S Kazakhstan) and subject to AFLP analysis using four primer combinations. This was supplemented by flow-cytometry of plants with remarkably different body sizes to check for possible ploidy differences. The presence or absence of AFLP bands was used in downstream analyses utilising various population genetic approaches. Genetic diversity of O. almaatensis was found to be on the upper end of the spectrum typical for other outcrossing species of similar life-history characters. Most of the genetic variation was attributable to within (sub)population variance, and we also found a remarkable gene flow between the populations. However, the geographically closer populations were found to be more close to each other genetically, and population differentiation showed the same pattern with a significant isolation by distance. This was not true for subpopulations of the geographically more close populations, and the subpopulations living along the same river valley were found to be genetically more cohesive. Flow-cytometry did not reveal any difference in DNA-content between the small and large forms of the species. Therefore, we conclude the presence of two separate populations at the three localities of this species. Conservation efforts should focus on these two populations, and, given the relatively high genetic diversity within each population, both ex situ and in situ conservation measures can be effectively carried out based on the currently known populations of this narrow endemic species.

Germination capacity of 75 herbaceous species of the Pannonian flora and implications for restoration

2019-01-08T11:38:34+01:00

Seeds ensure the survival and dispersal for the majority of vascular plant species. Seeds require species-specific germination conditions and display very different germination capacity during the use of different germination methods. Despite the importance of plant generative reproduction, little is known about the germination capacity of seeds of the Pannonian flora, particularly under field conditions. Our aim was to reduce this knowledge gap by providing original data on the germination capacity of 75 species herbaceous species. We reported first the germination capacity records of 8 species. We also highlighted the year-to-year differences in the germination capacity of 11 species, which could be highly variable between years. Our findings support the composition of proper seed mixtures for ecological restoration and also highlight the importance of testing seed germination capacity before sowing.