rss_2.0Hacquetia FeedSciendo RSS Feed for Hacquetia Feed Koch subsp. (Poech) Dostál, novelty for the flora of Slovenia and the Dinaric Alps<abstract> <title style='display:none'>Abstract</title> <p>In Govci under Mt. Poldanovec above the Trebuša Valley we found a new locality of southeastern-Alpine (Alpic) endemic <italic>Spiraea decumbens</italic> subsp. <italic>tomentosa</italic>, which is new to the flora of Slovenia and the Dinaric Alps. Its closest known localities are in the western Julian Prealps in Northeastern Italy. A small population of several ten shrublets occurs at elevations of about 570 m in shady, almost vertical dolomite rocks, in a stand of the endemic association <italic>Phyteumato columnae-Primuletum carniolicae.</italic> Despite a very small population we assume there are other localities in this area, where numerous gorges are very difficult to acces and have therefore not yet been sufficiently studied.</p> </abstract>ARTICLEtrue late summer-autumn weed vegetation in small size arable fields in Veneto: new insights into root crop communities in North East Italy<abstract> <title style='display:none'>Abstract</title> <p>A research was conducted in the Veneto region (NE-Italy) inside kitchen gardens and potato fields of outer pre-Alps, and in asparagus fields on the low Po plain near the Adriatic coast, in late summer-autumn after harvesting. Original vegetation-plot records were compared with historic and recent materials from Italy, especially N-Italy, and with comparable associations from Central and South-Eastern Europe, to ensure a consistent syntaxonomical frame of this highly dynamic vegetation.</p> <p>At the same time it was possible to shed light on the actual occurrence of past coenoses, cited by Italian authors for the Po plain. The analysis not only confirmed the occurrence of <italic>Echinochloo-Setarietum pumilae</italic> in north-eastern Italian territories, but also showed that it was more extensive than previously thought.</p> <p>It also confirmed the persistence of <italic>Panico-Polygonetum persicariae</italic>. The historical presence of <italic>Veronico-Lamietum hybridi</italic> occurring in pre-Alps and Dolomites needs confirmation. Further regional-scale investigations of summer crop weed vegetation appear necessary.</p> </abstract>ARTICLEtrue limitation failing reproductive success in selected animal pollinated trees of tropical moist deciduous forest of north-eastern hill region, India<abstract> <title style='display:none'>Abstract</title> <p>The aim of this study was to estimate reproductive effort and success in tropical trees and to examine the effect of pollen limitation on reproductive success. Pollen limitation was assessed through pollen supplementation experiment to contrast the open pollination treatment. The taxa selected were <italic>Bombax ceiba, Erythrina stricta</italic> (ornithophilous trees), <italic>Lagerstroemia speciosa, Mesua ferrea</italic> and <italic>Schima wallichii</italic> (entomophilous trees). Index of pollen limitation was highest in <italic>Bombax ceiba</italic> and <italic>Erythrina stricta</italic> (both self-incompatible species). The remaining three species were partially self-incompatible with favouring selfing in <italic>Lagerstroemia speciosa</italic> and <italic>Mesua ferrea</italic> and supporting outcrossing in <italic>Schima wallichii</italic>. Therefore, the high index of pollen limitation in <italic>Bombax ceiba</italic> and <italic>Erythrina stricta</italic> might be due to the effect of either lacking quality pollen or lacking bird pollinators. All five species produce a large amount of pollen at individual tree level in the order of 108 (<italic>Erythrina stricta</italic>) to 1010 (<italic>Mesua ferrea</italic>). Fruit and seed set following pollen supplementation were higher than the open pollination (as control) in all studied species. Pollen limitation in this study is likely associated with the effectiveness of pollinator and their frequency, as all the studied species had produced ample pollen at tree crown level which ultimately leads to pollinator resource limitation in tropical trees.</p> </abstract>ARTICLEtrue of the coastal dunes and wetland of Schinias National Park (NE Attica, Sterea Ellas, Greece)<abstract> <title style='display:none'>Abstract</title> <p>The vegetation developing on the coastal sand dunes and wetland of Schinias National Park, a Natura 2000 Site, was studied following the Braun-Blanquet method. Vegetation units were delimited using cluster analysis and by applying the fidelity measure; the phi-coefficient was used for the definition of diagnostic species. The vegetation types distinguished (twenty associations, two sub-associations and thirteen communities not assigned formal rank), which belong to 18 alliances, 16 orders and 12 classes, are discussed and presented in phytosociological tables. Among them <italic>Mathiolo tricuspidatae</italic>-<italic>Anthemidetum tomentosae</italic>, <italic>Pistacio lentisci-Pinetum halepensis pinetosum pineae</italic>, <italic>Puccinellio festuciformis</italic>-<italic>Aeluropetum litoralis cressetosum creticae</italic> and <italic>Tamaricetum tetrandrae</italic> are described for the first time. The vegetation types recognized in the study area are linked to twelve EUNIS habitat types, nine of which are related to 13 Annex I habitat types (Directive 92/43/EEC), and one to a habitat type of national interest (72A0). One Annex I habitat type occurring in the study area has scattered presence in the Natura 2000 network in Greece (1420), two are infrequent (2190, 2260), two are rare (2230, 2270) and three are priority habitat types (1150, 2250, 2270).</p> </abstract>ARTICLEtrue × ( × . ; ), a new hybrid for the flora of Ukraine<abstract> <title style='display:none'>Abstract</title> <p>There are 96 species of the genus <italic>Carex</italic> (Cyperaceae) known in the flora of Ukraine, but so far there are no data about its hybrids for the country yet. However, the first one, <italic>C. × takhtadjanii</italic> [<italic>C. diluta</italic> × <italic>C. distans</italic>], was discovered in Starobilsk town (Luhansk region) during a field investigation in 2021. Detailed information about this floristic finding with the description of morphological characters of this hybrid and its habitat is given. Also a map with known locations of <italic>C. × takhtadjanii</italic> around the world is compiled, as well as the main morphological differences between this hybrid and its parental species are reported.</p> </abstract>ARTICLEtrue diversity of natural populations of an endemic Moroccan plant ( O. Berg)<abstract> <title style='display:none'>Abstract</title> <p>The <italic>Euphorbia resinifera</italic> is melliferous and medicinal plant and one of the endemic species of Moroccan Atlas Mountains. It is very well known for its honey of high nutritional and therapeutic quality. The objective of our study is to characterize and evaluate the phenotypic variation of this spontaneous species. Seventeen qualitative and quantitative morphological characters related to the bush, stem, spine, flower, and fruit of the plant were used to assess the morphological variability of twelve natural populations collected from its geographical range in Morocco. The results of the analysis of variance showed significant differences between the studied populations for the most examined traits reflecting the existence of a high phenotypic variability within this species. The principal component analysis showed that <italic>E. resinifera</italic> populations were clustered in three distinct groups not related to mountain range type. The results highlight a high phenotypic diversity within studied populations of this species in Morocco. This work aims to study the phenotypic variability of <italic>E. resinifera</italic> to delineate conservation strategies and also to establish forms of rational economic exploitation.</p> </abstract>ARTICLEtrue micromorphological features of leaf surface of selected species of the genus L. (Asteraceae)<abstract> <title style='display:none'>Abstract</title> <p>The leaves of different species of the genus <italic>Artemisia</italic> show considerable inner and external structural diversity. This paper presents a comparative study of the micromorphological features of leaf surface for seven species from different regions of Ukraine: <italic>A. absinthium</italic> L., <italic>A. annua</italic> L., <italic>A. dracunculus</italic> L., <italic>A. marschalliana</italic> Spreng., <italic>A. vulgaris</italic> L., <italic>A. argyi</italic> H.Lév. &amp; Vaniot, and <italic>A. verlotiorum</italic> Lamotte. The vegetative organs of these plants have potentially significant value as medicinal raw materials. This study was carried out using both light and scanning electron microscopy. The main diagnostic characteristics for each species – in terms of form and structure of epidermal cells, stomata, and trichomes (glandular and non-glandular) – were described and illustrated. Using combinations of selected qualitative micromorphological characteristics of the investigated species of <italic>Artemisia,</italic> it is possible to detect the species identity of these raw materials.</p> </abstract>ARTICLEtrue on the genus (Chenopodiaceae) in Italy VII. and<abstract> <title style='display:none'>Abstract</title> <p>A population of <italic>Atriplex micrantha</italic> subsp. <italic>micrantha</italic> was found in Valle d’Aosta region representing the first north-western Italian record and the second one at national level. The newly found population (about 100 individuals) covers an area of about 200 m<sup>2</sup>, and grows on uncultivated and saline lands at 950 m. Despite the inland locality (the species naturally grows in saline places), its occurrence is probably linked to the use of salt-spreading vehicles. Concerning <italic>A. oblongifolia</italic>, only one Italian record was published up to now (in 1898 in Emilia-Romagna region) but neither any herbarium specimen was traced nor plants were discovered after field surveys. Finally, we studied in detail the types of <italic>A. micrantha</italic> subsp. <italic>micrantha</italic>, <italic>A. oblongifolia</italic>, and <italic>A. heterosperma</italic>. Lectotypes were designated for <italic>A. micrantha</italic> and <italic>A. oblongifolia</italic> (Ledebour’s and Waldstein &amp; Kitaibel’s illustrations), whereas we correct Schwarz’s typification for <italic>A. heterosperma</italic> (Art. 9.10 ICN).</p> </abstract>ARTICLEtrue features of the alien species L. in different habitats of the secondary distribution range (Ukraine)<abstract> <title style='display:none'>Abstract</title> <p>We have analyzed structural and dynamic characteristics (production, morphometric parameters, phytocoenotic features and invasive behavior) of two locations with the alien species <italic>Pistia stratiotes</italic> L. in different types of water bodies, by origin, use and trophic status (a drainage canal and oxbow lake) in the outskirts of Kyiv. It is possible that in the case of increased anthropogenic eutrophication due to inorganic nitrogen, mother plants become smaller and more compact. The variability of morphological features increases. We also have distinguished growth of invasive potential of the species in the conditions of the water bodies of the region.</p> </abstract>ARTICLEtrue and ecological peculiarities of Host in Ukraine<abstract> <title style='display:none'>Abstract</title> <p>This article deals with phytosociological and ecological requirements of the vulnerable species <italic>Festuca pallens</italic> in Ukraine. Based on the analysis of 51 relevés, we have recognized the occurrence of <italic>Festuca pallens</italic> in three associations within the <italic>Festuco-Brometea</italic> class. Some communities where <italic>Festuca pallens</italic> occurs have transitional stages of succession to forest edge vegetation according to the expert system classification. In addition, we evaluated the ecological differences among occupied habitats using Didukh’s phytoindication scales and concluded that the most important ecological factors are soil humidity, nitrogen content, soil aeration, salt regime, carbonate content, thermoregime, and climate continentality. Finally, we evaluated the threats to the existence of these communities with the presence of <italic>Festuca pallens</italic>, taking into account climate change and other impacts of anthropogenic activities (illegal mining, recreation, afforestation).</p> </abstract>ARTICLEtrue analysis of acidophytic alpine mat-grass swards in the Julian Alps and the Karawanks<abstract> <title style='display:none'>Abstract</title> <p>Acidophytic alpine mat-grass swards are rare in the alpine belt of the predominantly calcareous Southeastern Alps of Slovenia, mostly occurring where limestone is admixed with marlstone or chert. Those for which we were able to make phytosociological relevés can be classified mainly into two syntaxa: <italic>Carici curvulae-Nardetum strictae vaccinietosum gaultherioidis</italic> and <italic>Sieversio-Nardetum strictae vaccinietosum</italic>. At slightly lower elevations, in the forest zone of the subalpine plateau Pokljuka, we found similar swards occupying small areas in frost hollows with luvisol on limestone. They include character species of various subalpine-alpine sward and snow bed communities and are classified into the syntaxon <italic>Homogyno alpinae-Nardetum scorzoneroidetosum croceae</italic>.</p> </abstract>ARTICLEtrue survey of cork oak forests ( L.) in the province of Tizi Ouzou, Kabylia, Northern Algeria<abstract> <title style='display:none'>Abstract</title> <p>This study is a contribution to the knowledge of the floristic composition and syntaxonomical significance of <italic>Quercus suber</italic> woodlands of Tizi Ouzou province, which represent the last remnants of ancient forests. The field surveys were taken in several locations representative of cork oak woodlands, using the Braun-Blanquet method. A matrix of 96 phytosociological relevés and 160 plant taxa was treated with clustering analysis and correspondence analysis. These multivariate analyses showed congruent results and allowed the definition of four main clusters of cork oak woodlands, corresponding to four syntaxa according to synecological and syndynamic gradients. They belong to three associations, of which one is newly described, and two subassociations. They are: <italic>Sileno imbricatae-Quercetum suberis</italic> ass. nov., a mesophilous association newly described here, on siliceous soils and in the humid ombrotype; <italic>Cytiso villosi-Quercetum suberis</italic>, a mesophilous association, with two subassociations: <italic>quercetosum canariensis</italic>, and <italic>myrtetosum communis</italic>, this later reported for the first time in the study area, and both localized in the humid ombrotype and confined on markedly acid soils; <italic>Erico arboreae-Myrtetum communis</italic>, thermophilous secondary shrubland association developed in the subhumid ombrotype, on flysch substrates, also identified for the first time in this area. Syntaxonomic, synecological and syndynamic considerations are given for each syntaxon.</p> </abstract>ARTICLEtrue the distribution and conservation status of some rare orchid taxa (Orchidaceae) in Bosnia and Herzegovina (Western Balkans)<abstract> <title style='display:none'>Abstract</title> <p>Albeit rich in a number of taxa, flora of Orchidaceae in Bosnia and Herzegovina has not been sufficiently studied. The paper presents distribution of ten rare and threatened orchid taxa in the territory of Bosnia and Herzegovina. <italic>Serapias bergonii</italic> and <italic>Himantoglossum calcaratum</italic> subsp. <italic>rumelicum</italic> are new for Bosnia and Herzegovina, while for other studied taxa (<italic>Serapias parviflora, Serapias vomeracea, Himantoglossum adriaticum, H. calcaratum</italic> subsp. <italic>calcaratum, Gymnadenia frivaldii, Pseudorchis albida, Orchis quadripunctata, Cypripedium calceolus</italic>) in addition to field investigation, checking and revision of herbarium material, as well as literature sources were also used for supplementing distribution data. The distribution maps of these taxa in Bosnia and Herzegovina are created on a 10 km × 10 km MGRS grid system. Based on the IUCN Red List criteria, the threat status in Bosnia and Herzegovina was assessed for all studied taxa. Data concerning their habitat preferences and population size are also provided.</p> </abstract>ARTICLEtrue record of L. f. (Moraceae) in Algeria<abstract> <title style='display:none'>Abstract</title> <p>The escape from cultivation of <italic>Ficus microcarpa</italic> (Moraceae, Magnoliopsida) in Algeria is here reported. Several localities where the species reproduces from seeds have been discovered recently in northeastern Algeria. A map of its current distribution in the study area is provided. The species colonizes mainly urban habitats (walls, balconies and sidewalks) but its propagation in the natural environment is being facilitated by birds that disseminate the seeds over long distances. <italic>Ficus microcarpa</italic> can be considered as in the process of naturalization in Algeria. An updated key to species of the genus <italic>Ficus</italic> in Algeria is provided.</p> </abstract>ARTICLEtrue (Scilloideae, Asparagaceae), a new addition to the native flora of Tunisia and third report to Mediterranean Africa<abstract> <title style='display:none'>Abstract</title> <p><italic>Muscari baeticum,</italic> originating from western Europe, is here recorded as new from the central eastern part of Tunisia. So far, it was known only from Algeria and Morocco within the southern part of the Mediterranean basin. Description of the species as well as first data about its ecology in Tunisia together with geographical distribution and diagnostic features of closely related species are given. Photographic illustrations of the new reported taxon and an updated key to the <italic>Muscari</italic> species in North Africa are also provided.</p> </abstract>ARTICLEtrue and ecology of wild lettuces L. and L. in central Chile<abstract><title style='display:none'>Abstract</title><p>Wild lettuces (<italic>Lactuca</italic> L.) provide valuable genetic resources for crop breeding, but are also significant invasive weeds. We explored the distributions, habitats, and ecological characteristics of populations of wild <italic>Lactuca</italic> species in central Chile. We documented two species – <italic>Lactuca serriola</italic> L. (prickly lettuce) and <italic>Lactuca virosa</italic> L. (opium/bitter lettuce) in 204 localities. These observations indicate that: i) both allochthonous (Euroasian) <italic>Lactuca</italic> species occur and are able to regenerate in central Chile; ii) <italic>L. serriola</italic> forms dense populations in urbanized areas; iii) both species can expand along transport corridors to high elevations; iv) the spread of <italic>L. virosa</italic> and persistence of dense populations in elevations above 2,000 m a.s.l. prove the invasiveness of this species in extreme climates; v) both species may contain novel traits of interest for germplasm conservation.</p></abstract>ARTICLEtrue between vegetation of Macedonian pine ( Griseb.) and different types of soils on which it develops<abstract><title style='display:none'>Abstract</title><p>This paper deals with relationships between vegetation of Macedonian pine (<italic>Pinus peuce</italic>) and soils developed on different parent materials on the territory of North Macedonia. We analysed the floristic composition at localities on limestone, on scree of dolomite marble and on scree of silicate. On limestone and scree of dolomite marble, rendzinas on hard limestone and dolomite have developed, and on silicate parent material brown forest soils. The vegetation was sampled according to the Braun-Blanquet approach. DCA and indicator values were used for ecological interpretation of the vegetation patterns. The mechanical and chemical properties of soil and textural classes were also processed. An evident increased presence of carbonates in the soil of scree of dolomite marble on Nidže Mountain was observed, unlike that on Shar Mountain which has formed on typical limestone. Although it is a forest community dominated by the same species, differences between the massifs, the precipitation regime, geology, differences in soil properties in relation to the appearance of carbonates and pH values, and other factors, result in differences in their floristic composition and are the reason for the distinction between the two groups. On silicate on Nidže Mountain, Macedonian pine forests have also developed on brown forest soils, with a different floristic composition to that of the other group on carbonate (dolomite and limestone).</p></abstract>ARTICLEtrue of the differences in the composition of ruderal flora between conventional tram tracks and managed green tram tracks in the urban ecosystem of the city of Bratislava<abstract><title style='display:none'>Abstract</title><p>Green infrastructure (GI) brings many benefits to urban ecosystems. Green tram tracks can be considered to be a part of GI. The presented study is focused on the comparison of the species’ frequency and composition between conventional tram tracks and green tram tracks in Bratislava, Slovakia, Central Europe. This comparison also provides an insight into the changes of the flora of tram tracks over time, as we compare the results of the older research with recent research on green tram tracks. The results revealed significant differences in the composition of flora between conventional tram tracks and green tram tracks. In particular, the total number of species has decreased over time, as green tram tracks host fewer spontaneously growing taxa than conventional ones. The frequency of occurrence of archaeophytes and neophytes has decreased on the strict rail yard while on the tracksides it has increased. Green tram tracks deliver positive features to ecosystems, but may also have negative aspects because they present a pool of alien, potentially invasive plants.</p></abstract>ARTICLEtrue Assessment of a critically endangered endemic Polygonum samsunicum (Polygonaceae) with emended description from Turkey<abstract><title style='display:none'>Abstract</title><p><italic>Polygonum samsunicum</italic> is one of the endemic species from Turkey. Up to now, it has been only known from the type locality (Samsun /Ladik). This research intends to define the global conservation status and strategies of locally distributed endemic <italic>P. samsunicum</italic> which has been confronted with the danger of extinction due to anthropogenic effects in recent years. In this research, we did extensive field studies and collected all needed data for determining the precise conservation status of <italic>P. samsunicum</italic>. We reported nine additional populations from Upper Tersakan valley, where the Mediterranean climate is dominant, and the size of populations, altitude, coordinates, habitat types, and the threats it faces in each locality were given. GeoCAT analyses at global levels indicate the grade of occurrence 21.609 km2 and area of occupancy 10.094 km2 and there could be an inferred decline due to habitat loss and fragmentation of the original population, suggesting local endemic species might be classified as CR, based on criteria B1ab (i, ii, iii) + 2ab (i, ii, iii) in the Red List categorization. Its parts are also consumed by local people due to its medicinal features. For in-situ conservation, phenological life history and detailed ecological studies, as well as population monitoring and ex-situ conservation studies should be continued together. Establishing cooperation between universities, research institutes, and local management authorities is strongly needed for long-term monitoring of population size, distribution, overgrazing, and public awareness.</p></abstract>ARTICLEtrue and taxonomic notes on some endemic-rich associations of the Naples Gulf<abstract><title style='display:none'>Abstract</title><p>The Gulf of Naples is an important centre of endemism, well known from the floristic point of view, but much less from the phytosociological one. In this paper we investigated the non-forest vegetation focusing on communities rich in endemics. We described two communities as new: <italic>Eryngio amethystini-Santolinetum neapolitanae</italic> for the garrigues on limestone, <italic>Globulario neapolitanae-Loniceretum stabianae</italic> for the vegetation on dolomitic rocks, both from the Lattari mountains, and we extend the area of <italic>Crithmo maritimi-Limonietum cumani</italic> for the vegetation on volcanic rocks and rarely on limestones along the coast, which was known for a few localities. The syntaxonomical position and the phytogeographical context of these communities are discussed. A few taxonomic notes are added on rare or interesting species retrieved in the course of the enquiry.</p></abstract>ARTICLEtrue