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Research Interests: Taxonomy, Biology, Nomenclature, Key words, Rosaceae, and 3 moreLake Balaton, Apomixis, and Typification
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The ploidy level and karyotype ofMuscari botryoides (s.l.) samples from Hungary (25 localities) and Romania (1 locality:locus classicus ofM. transsilvanicum) were determined. The Romanian sample proved to be diploid (2n=18), while in... more
The ploidy level and karyotype ofMuscari botryoides (s.l.) samples from Hungary (25 localities) and Romania (1 locality:locus classicus ofM. transsilvanicum) were determined. The Romanian sample proved to be diploid (2n=18), while in Hungary both diploid and tetraploid (2n=36) populations occurred. The karyotypes of all diploid populations were similar: 2 pairs of long acrocentric (one of them usually with satellites) + 3 pairs of medium-sized submetacentric-metacentric + 4 pairs of short ± metacentric chromosomes. All diploid populations in Hungary can be identified asM. transsilvanicum. There is no reason to support the taxonM. botryoides subsp.hungaricum because it does not differ from the sample collected at thelocus classicus ofM. transsilvanicum (Romania, Sibiu-Guşteriţa) in any of the characteristics mentioned in its protologue. Its karyotype also corresponds to that ofM. transsilvanicum. Contrary to the former assumptions, the tetraploidM. botryoides is also native to Hungary. The tetraploid karyotype seems to be somewhat of a duplication of the diploid one. Morphological characters used in the identification keys are not suitable for unambiguous separation of the taxa mentioned above, though morphometric analyses revealed some quantitative differences between diploids and tetraploids. Their separation on species level can only be supported by the supposed reproductive barriers caused by different ploidy level and chorology. In HungaryM. transsilvanicum is restricted mostly to the Eupannonian Region, the Mecsek and Villány Mts.M. botryoides does not occur in the Eupannonicum, instead it inhabits the subatlantic hilly W and SW part of Hungary and the Northern Mountain Range. The latter territory (including also the Slovak localities) seems to be the easternmost extension of the area ofM. botryoides.
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FIGURE 3. Lectotype of Himantoglossum caprinum (right-hand specimen, H 1239346).
FIGURE 2. Differences between lengths of spur (A) and lateral labellar lobe (B) of the studied specimens.
<i>Polycnemum verrucosum</i> Láng (1824: 179). Lectotype (designated here):&amp;horbar; HUNGARY. <i>"Habitat in plagis arenosis, aridis, comitatus Pestiensis, Cumaniae, Faszygiae", s.d., A. F. Láng... more
<i>Polycnemum verrucosum</i> Láng (1824: 179). Lectotype (designated here):&amp;horbar; HUNGARY. <i>"Habitat in plagis arenosis, aridis, comitatus Pestiensis, Cumaniae, Faszygiae", s.d., A. F. Láng s.n.</i> (BP 707552!) (Fig. 2). ≡ <i>Polycnemum arvense</i> var. <i>verrucosum</i> (Láng) Oborny (1884: 334). Láng (1824: 179) described <i>Polycnemum verrucosum</i> from Hungary "… <i>in plagis arenosis, aridis, comitatus Pestiensis, Cumaniae, Faszygiae</i> ". This provenance covers a fairly large part of the Great Hungarian Plain, namely the territory of historical Pest County, the regions of Kunság (" <i>Cumania</i> " in Latin; the present-day Kis- and Nagykunság) and Jászság (" <i>Iazygia</i> ", " <i>Jazygia</i> ", or " <i>Jaszygia</i> " in Latin; the version " <i>Faszygia</i> " appearing in the protologue is an orthographic error). Three relevant specimens were traced, two found at W (both indicated as " <i>syntypus</i> " by R. Masson and J. Walter in 2013), and one at BP. The specimen W-1889-0266487 (image at http://jacq.nhm-wien.ac.at/djatoka/jacq-viewer/ viewer.html?rft_id=w_18890266487&amp;identifiers=w) bears a label reading " <i>Polycnemum verrucosum (mihi) Láng</i> [Láng's script] <i>Auf Steppen in Pester C.</i> [probably Reichenbach's script]". Indeed, this specimen comes from the herbarium of the younger Reichenbach who likely received it from his father (see Burns-Balogh 1988). Apparently, it was the elder Reichenbach who got the specimen from Láng (see Reichenbach 1832: 583), but the date of collection is unknown. The specimen W-0026899 (image at http://jacq.nhm-wien.ac.at/djatoka/jacq-viewer/viewer.html?rft_id=w_ 0026899&amp;identifiers=w_0026899) bears two individuals (plus three branches), accompanied by two original labels by Láng, thus representing two gatherings (from the herbaria of I. I. Schiffer and E. Fenzl, respectively). Although the texts on the labels match the protologue, since the collection dates are lacking, it cannot be ascertained whether these specimens are pre-1824 or not. Therefor [...]
<i>Polycnemum heuffelii</i> Láng (1828: 219, as "Heuffeli"). Lectotype (designated here):&amp;horbar; HUNGARY. Veresegyház <i>("Habitat in silvis collium arenosorum, ad Veresegyház Cttus... more
<i>Polycnemum heuffelii</i> Láng (1828: 219, as "Heuffeli"). Lectotype (designated here):&amp;horbar; HUNGARY. Veresegyház <i>("Habitat in silvis collium arenosorum, ad Veresegyház Cttus Pestiensis"), s.d., J. Heuffel s.n.</i> (BP 707539!) (Fig. 1). <i>Polycnemum heuffelii</i> was described as coming from Hungary "… <i>in sylvis collium arenosorum ad Veresegyház Cttus Pestiensis</i> ". Two specimens (W-0046105, W-0046106) labelled as " <i>Polycnemum Heuffeli</i> Láng " and indicated as " <i>syntypus</i> " by J. Walter in 2013, were traced in W (images available at http://jacq.nhm-wien.ac.at/djatoka/jacq-viewer/viewer. html?rft_id=w_0046105&amp;identifiers=w_0046105; http://jacq.nhm-wien.ac.at/djatoka/jacq-viewer/viewer.html?rft_ id=w_0046106&amp;identifiers=w_0046106). However, they cannot be considered syntypes because they were not explicitely cited in the protologue (Art. 9.5 of ICBN McNeill <i>et al.</i> 2012). These specimens come from Pest County (unspecified locality!), and the unknown collector(s) (probably J. Heuffel, who discovered the new taxon in 1826) sent specimens to his Austrian peers, namely to I. I. Schiffer and A. Putterlick respectively, who probably wrote the labels themselves. Láng probably had not seen these specimens, so we prefer to exclude them from his original material. Two relevant specimens were also found at BP (BP-707540, BP-707539). The label information on specimen BP-707540 is restricted to the provenance (" <i>Vörösegyháza</i> "), and this label was probably written by Gy. Tauscher, who must have received this material indirectly in the late 1850s at the earliest. Although the plant was possibly collected by Láng, the particulars about this specimen are obscure, thus we exclude it from the original material. The second specimen (BP-707539), originally part of Heuffel's collection, is obviously original material. It bears two individuals (probably representing a single gathering), and an original label written by Láng [who called Heuffel a most honoured friend (" <i>amicus dilec [...]
FIGURE 1. A. Lectotype of Polycnemum heuffelii Láng (BP 707539!). B. Lectotype of Polycnemum verrucosum Láng (BP 707552!).
FIGURE 2. Holotype of Sorbus udvardyana, showing the leaves on fertile shoots.
FIGURE 4. Distribution area of Sorbus udvardyana.
Despite huge habitat losses caused by agricultural intensification, dry grasslands still represent one of the most diverse ecosystems in Europe. Their highly fragmented remnants are often pre-served in man-made or human-influenced... more
Despite huge habitat losses caused by agricultural intensification, dry grasslands still represent one of the most diverse ecosystems in Europe. Their highly fragmented remnants are often pre-served in man-made or human-influenced habitats (e.g., kurgans, roadside verges or cemeteries). In recent decades the significance of cemeteries as suitable habitats for preserving native and rare spe-cies has been repeatedly emphasized. However, the effect of modern management practices on long-term persistence of grassland species has remained largely unexplored. Sternbergia colchiciflora Waldst. & Kit. is one of the very few threatened dry grassland specialists whose occurrence in the cemeteries of the Pannonian Basin has been known for more than a century. This hysteranthous, myrmecochorous geophyte is considered rare or sporadic within its whole distribution range. In a systematic botanical survey we investigated 154 cemeteries in the Pannonian part of its distribution area. Despite modern...
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Long-term seed viability is of crucial importance for short-lived species, since persistent seed banks can buffer the fluctuations in the establishment of plants from year to year. Temporarily flooded habitats are an unpredictable... more
Long-term seed viability is of crucial importance for short-lived species, since persistent seed banks can buffer the fluctuations in the establishment of plants from year to year. Temporarily flooded habitats are an unpredictable environment for plants, and for some species the only chance they have of surviving is the formation of persistent seed banks. Astragalus contortuplicatus is an annual species of periodically flooded habitats and is considered an endangered species in Hungary. Altogether 1993 seeds of this species were tested in a germination experiment: 1200 were freshly harvested and 793 were collected from herbarium specimens of various ages. Seed viability was tested using the germination method. The freshly harvested seeds were used for selecting the best out of seven frequently used dormancy-breaking methods for this species. The highest percentage of germination was recorded for the combined treatment of scarification and light. Thus, this method was used to test th...
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The taxonomic and nomenclatural history of Jávorka’s Sorbus bakonyensis is surveyed and its correct authorship and bibliographic citation is provided. The identity of the original material of S. bakonyensis and the history of its... more
The taxonomic and nomenclatural history of Jávorka’s Sorbus bakonyensis is surveyed and its correct authorship and bibliographic citation is provided. The identity of the original material of S. bakonyensis and the history of its interpretations are discussed. The name S. bakonyensis is applicable to an endemic of the eastern Bakony Mountains, restricted to the vicinity of the village of Márkó in Hungary. The illegitimate name S. majeri is a synonym of S. bakonyensis. A new name, S. udvardyana, is introduced here for the species occurring in the western Balaton region of Hungary, which was erroneously named “S. bakonyensis” in recent Hungarian literature.
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The status of 103 type specimens of three Lotus species (L. borbasii, L. degenii, L. orphanidis) described by J. UJHELYI was studied and clarified. Some mistakes were eliminated and corrected (in the remarks). With 2 figures.
A lectotype of the name <em>Ramonda serbica </em>Panč. is designated from Pančić's specimens held in the Hungarian Natural History Museum in Budapest (BP) and illustrated.
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The presence of Viola collina in Croatia was previously not ascertained, but in 2008 it was discovered in three regions of Croatia: the Samobor, Papuk and Kalnik mountains. The Croatian localities of V. collina are briefly characterized.... more
The presence of Viola collina in Croatia was previously not ascertained, but in 2008 it was discovered in three regions of Croatia: the Samobor, Papuk and Kalnik mountains. The Croatian localities of V. collina are briefly characterized. Habitat preference of the species is discussed with emphasis on the analogy revealed between Hungarian and Croatian V. collina habitats.Prisutnost vrste Viola collina u Hrvatskoj nije dosad bila potvrđena, ali 2008 je otkrivena na tri područja u Hrvatskoj: Samoborskom gorju, Papuku i Kalniku. Ukratko se opisuju ti lokaliteti. Raspravlja se o izboru staništa, s naglaskom na otkrivenu analogiju između mađarskih i hrvatskih staništa
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A cikk a medvetalp (Heracleum) nemzetség néhány hazánkban gyűjtött, tévesen határozott, az MTM Növénytára herbáriumában (BP) őrzött példányát, illetve ezek szakirodalmi kapcsolatait tárgyalja. Az őshonos Heracleum taxonok Kárpát-medencei... more
A cikk a medvetalp (Heracleum) nemzetség néhány hazánkban gyűjtött, tévesen határozott, az MTM Növénytára herbáriumában (BP) őrzött példányát, illetve ezek szakirodalmi kapcsolatait tárgyalja. Az őshonos Heracleum taxonok Kárpát-medencei elterjedési mintázatát Simon Tibor tisztázta az 1960-as években, a szóban forgó példányokat azonban, amelyek valójában idegenhonos fajokat reprezentálnak, tévesen revideálta (H. sphondylium-ként). Jelen cikk szerzőjének revíziója magyarázatot ad a Simon által közölt elterjedési térkép mintázatában mutatkozó fontosabb diszkrepanciákra, egyúttal történeti adatokkal szolgál az idegenhonos Heracleum fajok hazai előfordulása vonatkozásában. Megállapítja, hogy a szakirodalomban szereplő magyarországi „H. persicum” adatok tévesek, és a H. mantegazzianum-ra vonatkoznak. Utóbbi faj első ismert hazai előfordulását Borbás Vince „H. trichocarpum” néven cédulázott példánya dokumentálja, amelyet a budapesti Népligetben gyűjtött 1878-ban. Két további, a Simon-féle...
During the study of the weed flora of garden centers in Hungary (among 2017–2020), remarkable populations of Cardamine occulta Hornem., a new alien for the Hungarian flora were found. C. occulta was present altogether in 51 of the 53... more
During the study of the weed flora of garden centers in Hungary (among 2017–2020), remarkable populations of Cardamine occulta Hornem., a new alien for the Hungarian flora were found. C. occulta was present altogether in 51 of the 53 visited sites. Dominantly the regularly irrigated and continuously moist microhabitats (pots, containers, muddy surfaces of geotextile-covered beds etc.) were colonized. During the revision of our recently collected specimens, deposited in JPU and DE herbaria as Cardamine hirsuta L., further individuals proved to identical with this till overlooked species. One of them (27.08.2004., Heves county: Eger [8088.3; 8188.1], coll. by A. Schmotzer, deposited in DE collection) proved to the third documented occurrence in Europe, comparing to the accessed literature data. Eclipta prostrata (L.) L. and Urtica membranacea Poir. are also new aliens for the Hungarian flora. Several introduced individuals of these taxa were found in containers of imported thermophilo...