Papers by Jarosław Proćków
Acta Soc Bot Pol. , 2017
The identity of the holotype of Epipactis purpurata Sm. is shown to be demonstrably ambiguous bec... more The identity of the holotype of Epipactis purpurata Sm. is shown to be demonstrably ambiguous because all its flowers are at the budding stage (pre-anthesis); thus, no crucial diagnostic characters are visible, i.e., gynostemium morphology and undulations of margins of the labella and their shape and color. This way, the specimen is almost identical with several species of Epipactis genus (E. purpurata group) and including morphologically variable Epipactis helleborine, as many plants of the latter species can have similar combinations of characters like the holotype (i.e., small leaves and a robust stem even in the inflorescence). Thus, an epitype for the name Epipactis purpurata Sm. is proposed (M 257866) in order to enable its precise taxonomic interpretation and achieve nomenclatural stability.
PLoS ONE, 2017
Juncus quartinianus (Juncaceae sect. Ozophyllum) was described by Richard in 1851 from Ethiopia. ... more Juncus quartinianus (Juncaceae sect. Ozophyllum) was described by Richard in 1851 from Ethiopia. Some authors have treated this species as a synonym of J. fontanesii and others as a synonym of J. oxycarpus. Based on morphological analyses of flowers, fruit and seeds, we propose to restore J. quartinianus as a distinct species from both these taxa. Its detailed re-description and an identification key to the morphologically similar species of Juncus sect. Ozophyllum are provided.
The group of plants of water and swampy habitats is nowadays considered to be one of the most thr... more The group of plants of water and swampy habitats is nowadays considered to be one of the most threatened in the whole Europe. 87 taxa represent them in the Red List of Lower Silesia. The paper presents chosen species and distribution of their localities within the limits of Lower Silesian province. In the closing part, the most serious, in the authors opinion, categories of threats as well as possibilities of reduction of factors causing extinction of water and swampy plants are specified.
First data on the occurrence and distribution of Livia junci in Iraqi Kurdistan are given. Juncus... more First data on the occurrence and distribution of Livia junci in Iraqi Kurdistan are given. Juncus cfr. fontanesii J.Gay ex Laharpe specimens were collected on June 8, 1958 near the village of Dinartah (Dinarta), Nineveh (Nīnawá) Province, NE of Mosul, 650 m a.s.l. (specimens at the RBG Kew Herbarium, E. Chapman 26131). We observed galls on Juncus plants, which formed in response to Livia feeding. Psyllids typically feed on dicotyledonous plants; however, Livia genus developed on monocots.
Witches' brooms" is a disease or deformity in a plant where the natural structure of the plant is... more Witches' brooms" is a disease or deformity in a plant where the natural structure of the plant is changed, i.e., a dense mass of shoots grows, usually from a single point, with the resulting structure resembling a broom. The specimens of Juncus fontanesii J. Gay ex Laharpe were collected on July 21, 2003, in Portugal (LISU 189105). We observed the larvae of the last (i.e., fifth) stadium of Livia junci (Schrank, 1789) (Hemiptera: Psyllidae). Many exuvia of the early larval stages from Livia junci were obtained from the galls. This confirmed that the parasites lived in its larval period on Juncus fontanesii. Additionally, J. fontanesii formed the galls as a result of response to feeding, similar to other representatives of the genus Juncus. Livia junci is the only representative of the genus Livia that feeds on Juncus species in the Western Palearctic area.
Annales Botanici Fennici, 2010
Central European Journal of Biology, 2011
The study examines the patches of the saltwater association Ranunculetum baudotii in a new, atypi... more The study examines the patches of the saltwater association Ranunculetum baudotii in a new, atypical site; i.e., located more than 400 km away from the Baltic coastal line. They were found in a karst spring, and were the first locality of the community identified in Poland. The water and sediments within the patches were analyzed chemically in the laboratory, but,
Taxon, Jan 1, 2010
... Titre du document / Document title. (238) Proposal to remove a superfluous rule that is follo... more ... Titre du document / Document title. (238) Proposal to remove a superfluous rule that is followed when generic names are typified. Auteur(s) / Author(s). PROCKOW Jaroslaw ; JAKUBSKA-BUSSE Anna ; Revue / Journal Title. Taxon ISSN 0040-0262 CODEN TAXNAP ...
Botanical Journal of the Linnean Society, 2012
A comparative analysis of the main distinctive features of Epipactis pseudopurpurata, according t... more A comparative analysis of the main distinctive features of Epipactis pseudopurpurata, according to the protologue, and E. purpurata revealed that the absence or disappearance, as well as the atrophy, of a viscidium is typical and characteristic of young ramets of E. purpurata and can also result from its removal by pollinators and other insect visitors. The gynostemium morphology is similar in both species examined. The minor differences in its shape are an indication of developmental variability. The morphology of numerous ramets of E. purpurata and of their gynostemia corresponds to Mered'a's description of E. pseudopurpurata, suggesting phenotypic plasticity in the former species. Based on comparative analyses of both taxa, including molecular data, the authors propose to synonymize E. pseudopurpurata with E. purpurata in view of the low value of the taxonomic features distinguishing the two species.
Botanical Journal of …, Jan 1, 2012
A comparative analysis of the main distinctive features of Epipactis pseudopurpurata, according t... more A comparative analysis of the main distinctive features of Epipactis pseudopurpurata, according to the protologue, and E. purpurata revealed that the absence or disappearance, as well as the atrophy, of a viscidium is typical and characteristic of young ramets of E. purpurata and can also result from its removal by pollinators and other insect visitors. The gynostemium morphology is similar in both species examined. The minor differences in its shape are an indication of developmental variability. The morphology of numerous ramets of E. purpurata and of their gynostemia corresponds to Mered'a's description of E. pseudopurpurata, suggesting phenotypic plasticity in the former species. Based on comparative analyses of both taxa, including molecular data, the authors propose to synonymize E. pseudopurpurata with E. purpurata in view of the low value of the taxonomic features distinguishing the two species.
A new locality of Macrosciadium alatum in the Western Bieszczady Mts. (Duszatyn, Komańcza distric... more A new locality of Macrosciadium alatum in the Western Bieszczady Mts. (Duszatyn, Komańcza district, Sanok
county) is described in this paper. The locality is currently the westernmost point of distribution of the species. As Macrosciadium alatum is an invasive species, it is advisable to monitor it cyclically in this area. A newly discovered diagnostic
feature of this species, not included in descriptions of this plant so far, is conically elongated cells, i.e. papillae on the upper
side of the petals. It is suggested that this feature be used in the identification of representatives of the Apiaceae family in
Poland and Europe. The distribution map of the species has been updated in this work.
Lolium temulentum origins from the northern part of Mediterranean area. In Poland, it occurs in l... more Lolium temulentum origins from the northern part of Mediterranean area. In Poland, it occurs in lowlands and in the lower parts of mountains. In Lower Silesia, it was recorded from over 100 localities in 45 ATPOL squares (10x10 km), in majority after 1985. Mostly it grew as a weed on cultivated fields. After 2000 it was recorded only from Góry and Pogórze Kaczawskie (Kaczawa Mountains and Plateau) in many sites but it seems that they should be revised (herbarium material necessary). So the species is included to the data deficient group now (DD).
Botanical Journal of the Linnean Society, 2012
A comparative analysis of the main distinctive features of Epipactis pseudopurpurata, according t... more A comparative analysis of the main distinctive features of Epipactis pseudopurpurata, according to the protologue, and E. purpurata revealed that the absence or disappearance, as well as the atrophy, of a viscidium is typical and characteristic of young ramets of E. purpurata and can also result from its removal by pollinators and other insect visitors. The gynostemium morphology is similar in both species examined. The minor differences in its shape are an indication of developmental variability. The morphology of numerous ramets of E. purpurata and of their gynostemia corresponds to Mered'a's description of E. pseudopurpurata, suggesting phenotypic plasticity in the former species. Based on comparative analyses of both taxa, including molecular data, the authors propose to synonymize E. pseudopurpurata with E. purpurata in view of the low value of the taxonomic features distinguishing the two species.
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Papers by Jarosław Proćków
county) is described in this paper. The locality is currently the westernmost point of distribution of the species. As Macrosciadium alatum is an invasive species, it is advisable to monitor it cyclically in this area. A newly discovered diagnostic
feature of this species, not included in descriptions of this plant so far, is conically elongated cells, i.e. papillae on the upper
side of the petals. It is suggested that this feature be used in the identification of representatives of the Apiaceae family in
Poland and Europe. The distribution map of the species has been updated in this work.
county) is described in this paper. The locality is currently the westernmost point of distribution of the species. As Macrosciadium alatum is an invasive species, it is advisable to monitor it cyclically in this area. A newly discovered diagnostic
feature of this species, not included in descriptions of this plant so far, is conically elongated cells, i.e. papillae on the upper
side of the petals. It is suggested that this feature be used in the identification of representatives of the Apiaceae family in
Poland and Europe. The distribution map of the species has been updated in this work.