ABSTRACT. The fossil nuts of Trapa from the Pliocene sediments of the Belchatow brown-coal mine (... more ABSTRACT. The fossil nuts of Trapa from the Pliocene sediments of the Belchatow brown-coal mine (Middle Poland) determined earlier as Trapa silesiaca Goeppert are described here as a fossil species new to science, Tlflptl srodoniana sp. nov. The newly described ...
In the present paper the authors submit results of biometrical analysis of the variability of met... more In the present paper the authors submit results of biometrical analysis of the variability of metrical and morphological features of Trapa L. nuts from Polish localities. In the collected material have been found the two species T. conocarpa (Areschoug) Fleroff and T. natans L. and a great number of intermediate forms resulting from hybridization and introgression of the above-mentioned species.
Trapa kvacekii Wojcicki & D. Velitzelos (Trapaceae), a new fossil species from the late Miocene o... more Trapa kvacekii Wojcicki & D. Velitzelos (Trapaceae), a new fossil species from the late Miocene of Likudi near Elassone (Thessalia, Greece) is described, illustrated and briefl y discussed. It differs markedly from its congeners by fruit morphology, primarily by the characteristic fruit body oblong-triangular in outline, well-developed high ring at the base, and stout lower horns inserted 3/5 to 3/4 the distance from the base of the fruit.
In the present paper the authors submit the results of their biometrical analysis of the variabil... more In the present paper the authors submit the results of their biometrical analysis of the variability of metrical characters of the Trapa L. nuts represented by local populations or determined taxa from Central European localities. The investigations allowed two groups to be distinguished in the material, probably identical with Jankovic's Brevicarpa and Longicarpa sections.
… des Geobotanischen Institutes der ETH, Stiftung Rübel …, 1991
... Titre du document / Document title. Variability of Prunus fruticosa Pall. and the problem of ... more ... Titre du document / Document title. Variability of Prunus fruticosa Pall. and the problem of an anthropohybridization. Auteur(s) / Author(s). WOJCICKI JJ ; Affiliation(s) du ou des auteurs / Author(s) Affiliation(s). Polish acad. sci., W. Szafer inst. botany, 31-512 Krakow, POLOGNE ...
ABSTRACT. A fossil flora is described from the opencast mine Heissler near Hinterschlagen in the ... more ABSTRACT. A fossil flora is described from the opencast mine Heissler near Hinterschlagen in the Hausruck lignite area (Upper Austria, Late Miocene, Pannonian). The plant remains derive from the top of a clayey seam parting and indicate (shallow) aquatic habitats and ...
ABSTRACT. Fossil fruits from a new locality from the Miocene of the Liang He Open-cast Mine are c... more ABSTRACT. Fossil fruits from a new locality from the Miocene of the Liang He Open-cast Mine are characterised and described as a new species of the genus Trapa L., T chengsenii Wojcicki, Song & Wang, sp. nov. The newly described species does not correspond in any ...
ABSTRACT. Tlrapa praehungarica Wojcicki & Bajzath, a fossil species new to science is described f... more ABSTRACT. Tlrapa praehungarica Wojcicki & Bajzath, a fossil species new to science is described from the known upper Pannonian of Biikkabrany (Biikk Mts. Piedmont Region, Hungary). The suggested similarity of T praehungarica and T. heerii Fritsch known from ...
The unintentional effects of man's activity on the evolution of wild plants are illustrated by th... more The unintentional effects of man's activity on the evolution of wild plants are illustrated by the spontaneous hybridization between native Prunus fruticosa Pall. and introduced P. cerasus L. The frequency of spontaneous hybrids between P. fruticosa and P. cerasus (= P. x eminens Beck) is analyzed for the Czech and Slovakian distribution of P. fruticosa. Results of an analysis of morphological variability both at 'regional' and population levels are presented. Distribution maps based on revised herbarium material of P. fruticosa and its hybrids with P. cerasus are presented.
The results of taxonomic studies of Cardamine dentata Schult. from Poland are presented and the d... more The results of taxonomic studies of Cardamine dentata Schult. from Poland are presented and the distribution map of the species in Poland based on a revision of herbarium material is provided for the first time. The problem of hybridization of C. dentata is briefly discussed.
Fossil fruits of Trapa from the Late Miocene sediments of Sośnica (SW Poland), described by Goepp... more Fossil fruits of Trapa from the Late Miocene sediments of Sośnica (SW Poland), described by Goeppert as Trapa silesiaca and T. bifrons, are revised and re-illustrated. The discovery of additional morphological features has enabled a precise characterization of T. silesiaca to be realized with resultant emendation of its diagnosis. The lectotype of T. silesiaca is formally designated and an epitype selected for the purpose of providing a precise application of the name T. silesiaca. Studies of specimens from the original collection determined by Goeppert as T. bifrons confirmed earlier suggestions that this species is conspecific with T. silesiaca. The correct citation of Trapa assmanniana (Goeppert) Gothan in Potonié described and illustrated by Goeppert from Sośnica as Populus assmanniana is provided. The taphocoenosis of fossil plants from Sośnica is also briefly characterized.
Abstarct: Trapa assamica, a new extant species from the northeastern part of the Indian Subcontin... more Abstarct: Trapa assamica, a new extant species from the northeastern part of the Indian Subcontinent, is described, illustrated, and compared to its nearest relatives. It is easily distinguished from its congeners mainly by: its truncate-obpyramidal fruit with a highly protruding basal ring; slightly retrorse or divergent horns flattened apically and with characteristic triangular mat areas on their adaxial surface; reduced, truncate lower horns; stout, truncate tubercles between the lower and upper horns located always close to the base of upper horns; and an immersed basal scar.
L'interet des macrophytes aquatiques fossiles pour la determination des contextes trophiques ... more L'interet des macrophytes aquatiques fossiles pour la determination des contextes trophiques anciens est etudie dans le lac Miocene de La Cerdanya (Pyrenees orientales, Catalogne, Espagne). Les plantes aquatiques se trouvent dans une succession lacustre epaisse de 400 m et datee du Vallesien. Les lignites et argiles palustres passent lateralement a des diatomites de lac ouvert. L'ensemble est couvert par des gres arkosiques et des argiles de lac peu profond. Trois assemblages de plantes aquatiques sont decrits : (1) Les depots palustres presentent des fruits et pollens de Trapa ceretana caracteristiques d'eaux eutrophiques. (2) Les diatomites lacustres contiennent Potamogeton orbiculare, Ceratophyllum schrotzburgense, Nymphaeaceae et Myriophyllum. Cet assemblage est comparable a celui des communautes de lacs mesotrophiques actuels. (3) Les depots des derniers stades de remplissage du lac sont domines par Lychnothamnus barbatus subsp. megalicarpus, indiquant des condition...
Fruits of Hemitrapa heissigii Gregor (Trapaceae) have been recognized in the weathered Lom Coal S... more Fruits of Hemitrapa heissigii Gregor (Trapaceae) have been recognized in the weathered Lom Coal Seam in the northern part of the Most Basin, North Bohemia. This is one of earliest records of this species in Eurasia. The fossil-bearing level is assumed to be of late Early Miocene age (approximately late Eggenburgian to Karpatian of the Paratethys regional stratigraphy). All the other megafossils from the Most Basin, which have been determined as belonging to Trapa, are either poorly preserved, not determinable to the generic level, or not belonging to the Trapaceae.
Trapa kashmirensis, a new species from Wular Lake in Kashmir, is described and illustrated. It di... more Trapa kashmirensis, a new species from Wular Lake in Kashmir, is described and illustrated. It differs markedly by its fruit morphology from all other members of the genus, primarily by the characteristic long upper horns and strongly reflexed lower horns, the longest known in the genus.
A new fossil genus Schenkiella Wojcicki & Z. Kvacyek is installed to accommodate thorny/horny dis... more A new fossil genus Schenkiella Wojcicki & Z. Kvacyek is installed to accommodate thorny/horny disseminules called "Trapa" credneri Schenk. This plant, Schenkiella credneri (Schenk) Wojcicki & Z. Kvacyek comb. nov., is an index fossil for the middle Early Miocene Floral Assemblage ("Florenkomplex") Bilina - Brandis sensu Mai of central Europe. It is distributed from the Most Basin, North Bohemia, to the north-western Saxo- nian peripheral basins, occurring only at a few localities. It is usually associated with aquatic vegetation in coal facies and may also represent an aquatic plant. Its systematic position remains uncertain. It is similar to dis- seminules called Palaeotrapa triangulata Golovneva from the Late Cretaceous (Maastricht) of the Russian Far East.
The plant remains from a hydrophyte-bearing pelite of the sedimentary sequence at Pellendorf, Low... more The plant remains from a hydrophyte-bearing pelite of the sedimentary sequence at Pellendorf, Lower Austria (Miocene, Pannonian "zone" C) are investigated taxonomically. Mikia pellendorfensis Kovar-Eder & Wojcicki gen. et sp. nov. most probably represents floating leaves of a rooted aquatic plant. These leaves possibly belong to the plant that produced Hemitrapa trapelloidea Miki fruits. Trapa pellendorfensis Wojcicki & Kovar-Eder sp. nov. (fruits) co-occurs with H. trapelloidea even on the same bedding planes. The lower, ap- proximately 2.7 m thick part of the investigated pelite is characterized by a mass-occurrence (monodominant) of Decodon leaves. In the upper approximately 1.1 m species are more diverse in aquatic plants: Nitellopsis majori- formis (Papp) Schwarz comb. nov., Stephanochara aff. rochettiana (Heer) Feist-Castel, Ceratophyllum schrotz- burgense Hantke, Ceratophyllum sp. (fruits), Nymphaeaceae (rhizome fragments), Hemitrapa trapelloidea, Trapa pellendorfen...
Trapa assamica, a new extant species from the northeastern part of the Indian Subcontinent, is de... more Trapa assamica, a new extant species from the northeastern part of the Indian Subcontinent, is described, illustrated, and compared to its nearest relatives. It is easily distinguished from its congeners mainly by: its truncate-obpyramidal fruit with a highly protruding basal ring; slightly retrorse or divergent horns flattened apically and with characteristic triangular mat areas on their adaxial surface; reduced, truncate lower horns; stout, truncate tubercles between the lower and upper horns located always close to the base of upper horns; and an immersed basal scar.
ABSTRACT. The fossil nuts of Trapa from the Pliocene sediments of the Belchatow brown-coal mine (... more ABSTRACT. The fossil nuts of Trapa from the Pliocene sediments of the Belchatow brown-coal mine (Middle Poland) determined earlier as Trapa silesiaca Goeppert are described here as a fossil species new to science, Tlflptl srodoniana sp. nov. The newly described ...
In the present paper the authors submit results of biometrical analysis of the variability of met... more In the present paper the authors submit results of biometrical analysis of the variability of metrical and morphological features of Trapa L. nuts from Polish localities. In the collected material have been found the two species T. conocarpa (Areschoug) Fleroff and T. natans L. and a great number of intermediate forms resulting from hybridization and introgression of the above-mentioned species.
Trapa kvacekii Wojcicki & D. Velitzelos (Trapaceae), a new fossil species from the late Miocene o... more Trapa kvacekii Wojcicki & D. Velitzelos (Trapaceae), a new fossil species from the late Miocene of Likudi near Elassone (Thessalia, Greece) is described, illustrated and briefl y discussed. It differs markedly from its congeners by fruit morphology, primarily by the characteristic fruit body oblong-triangular in outline, well-developed high ring at the base, and stout lower horns inserted 3/5 to 3/4 the distance from the base of the fruit.
In the present paper the authors submit the results of their biometrical analysis of the variabil... more In the present paper the authors submit the results of their biometrical analysis of the variability of metrical characters of the Trapa L. nuts represented by local populations or determined taxa from Central European localities. The investigations allowed two groups to be distinguished in the material, probably identical with Jankovic's Brevicarpa and Longicarpa sections.
… des Geobotanischen Institutes der ETH, Stiftung Rübel …, 1991
... Titre du document / Document title. Variability of Prunus fruticosa Pall. and the problem of ... more ... Titre du document / Document title. Variability of Prunus fruticosa Pall. and the problem of an anthropohybridization. Auteur(s) / Author(s). WOJCICKI JJ ; Affiliation(s) du ou des auteurs / Author(s) Affiliation(s). Polish acad. sci., W. Szafer inst. botany, 31-512 Krakow, POLOGNE ...
ABSTRACT. A fossil flora is described from the opencast mine Heissler near Hinterschlagen in the ... more ABSTRACT. A fossil flora is described from the opencast mine Heissler near Hinterschlagen in the Hausruck lignite area (Upper Austria, Late Miocene, Pannonian). The plant remains derive from the top of a clayey seam parting and indicate (shallow) aquatic habitats and ...
ABSTRACT. Fossil fruits from a new locality from the Miocene of the Liang He Open-cast Mine are c... more ABSTRACT. Fossil fruits from a new locality from the Miocene of the Liang He Open-cast Mine are characterised and described as a new species of the genus Trapa L., T chengsenii Wojcicki, Song & Wang, sp. nov. The newly described species does not correspond in any ...
ABSTRACT. Tlrapa praehungarica Wojcicki & Bajzath, a fossil species new to science is described f... more ABSTRACT. Tlrapa praehungarica Wojcicki & Bajzath, a fossil species new to science is described from the known upper Pannonian of Biikkabrany (Biikk Mts. Piedmont Region, Hungary). The suggested similarity of T praehungarica and T. heerii Fritsch known from ...
The unintentional effects of man's activity on the evolution of wild plants are illustrated by th... more The unintentional effects of man's activity on the evolution of wild plants are illustrated by the spontaneous hybridization between native Prunus fruticosa Pall. and introduced P. cerasus L. The frequency of spontaneous hybrids between P. fruticosa and P. cerasus (= P. x eminens Beck) is analyzed for the Czech and Slovakian distribution of P. fruticosa. Results of an analysis of morphological variability both at 'regional' and population levels are presented. Distribution maps based on revised herbarium material of P. fruticosa and its hybrids with P. cerasus are presented.
The results of taxonomic studies of Cardamine dentata Schult. from Poland are presented and the d... more The results of taxonomic studies of Cardamine dentata Schult. from Poland are presented and the distribution map of the species in Poland based on a revision of herbarium material is provided for the first time. The problem of hybridization of C. dentata is briefly discussed.
Fossil fruits of Trapa from the Late Miocene sediments of Sośnica (SW Poland), described by Goepp... more Fossil fruits of Trapa from the Late Miocene sediments of Sośnica (SW Poland), described by Goeppert as Trapa silesiaca and T. bifrons, are revised and re-illustrated. The discovery of additional morphological features has enabled a precise characterization of T. silesiaca to be realized with resultant emendation of its diagnosis. The lectotype of T. silesiaca is formally designated and an epitype selected for the purpose of providing a precise application of the name T. silesiaca. Studies of specimens from the original collection determined by Goeppert as T. bifrons confirmed earlier suggestions that this species is conspecific with T. silesiaca. The correct citation of Trapa assmanniana (Goeppert) Gothan in Potonié described and illustrated by Goeppert from Sośnica as Populus assmanniana is provided. The taphocoenosis of fossil plants from Sośnica is also briefly characterized.
Abstarct: Trapa assamica, a new extant species from the northeastern part of the Indian Subcontin... more Abstarct: Trapa assamica, a new extant species from the northeastern part of the Indian Subcontinent, is described, illustrated, and compared to its nearest relatives. It is easily distinguished from its congeners mainly by: its truncate-obpyramidal fruit with a highly protruding basal ring; slightly retrorse or divergent horns flattened apically and with characteristic triangular mat areas on their adaxial surface; reduced, truncate lower horns; stout, truncate tubercles between the lower and upper horns located always close to the base of upper horns; and an immersed basal scar.
L'interet des macrophytes aquatiques fossiles pour la determination des contextes trophiques ... more L'interet des macrophytes aquatiques fossiles pour la determination des contextes trophiques anciens est etudie dans le lac Miocene de La Cerdanya (Pyrenees orientales, Catalogne, Espagne). Les plantes aquatiques se trouvent dans une succession lacustre epaisse de 400 m et datee du Vallesien. Les lignites et argiles palustres passent lateralement a des diatomites de lac ouvert. L'ensemble est couvert par des gres arkosiques et des argiles de lac peu profond. Trois assemblages de plantes aquatiques sont decrits : (1) Les depots palustres presentent des fruits et pollens de Trapa ceretana caracteristiques d'eaux eutrophiques. (2) Les diatomites lacustres contiennent Potamogeton orbiculare, Ceratophyllum schrotzburgense, Nymphaeaceae et Myriophyllum. Cet assemblage est comparable a celui des communautes de lacs mesotrophiques actuels. (3) Les depots des derniers stades de remplissage du lac sont domines par Lychnothamnus barbatus subsp. megalicarpus, indiquant des condition...
Fruits of Hemitrapa heissigii Gregor (Trapaceae) have been recognized in the weathered Lom Coal S... more Fruits of Hemitrapa heissigii Gregor (Trapaceae) have been recognized in the weathered Lom Coal Seam in the northern part of the Most Basin, North Bohemia. This is one of earliest records of this species in Eurasia. The fossil-bearing level is assumed to be of late Early Miocene age (approximately late Eggenburgian to Karpatian of the Paratethys regional stratigraphy). All the other megafossils from the Most Basin, which have been determined as belonging to Trapa, are either poorly preserved, not determinable to the generic level, or not belonging to the Trapaceae.
Trapa kashmirensis, a new species from Wular Lake in Kashmir, is described and illustrated. It di... more Trapa kashmirensis, a new species from Wular Lake in Kashmir, is described and illustrated. It differs markedly by its fruit morphology from all other members of the genus, primarily by the characteristic long upper horns and strongly reflexed lower horns, the longest known in the genus.
A new fossil genus Schenkiella Wojcicki & Z. Kvacyek is installed to accommodate thorny/horny dis... more A new fossil genus Schenkiella Wojcicki & Z. Kvacyek is installed to accommodate thorny/horny disseminules called "Trapa" credneri Schenk. This plant, Schenkiella credneri (Schenk) Wojcicki & Z. Kvacyek comb. nov., is an index fossil for the middle Early Miocene Floral Assemblage ("Florenkomplex") Bilina - Brandis sensu Mai of central Europe. It is distributed from the Most Basin, North Bohemia, to the north-western Saxo- nian peripheral basins, occurring only at a few localities. It is usually associated with aquatic vegetation in coal facies and may also represent an aquatic plant. Its systematic position remains uncertain. It is similar to dis- seminules called Palaeotrapa triangulata Golovneva from the Late Cretaceous (Maastricht) of the Russian Far East.
The plant remains from a hydrophyte-bearing pelite of the sedimentary sequence at Pellendorf, Low... more The plant remains from a hydrophyte-bearing pelite of the sedimentary sequence at Pellendorf, Lower Austria (Miocene, Pannonian "zone" C) are investigated taxonomically. Mikia pellendorfensis Kovar-Eder & Wojcicki gen. et sp. nov. most probably represents floating leaves of a rooted aquatic plant. These leaves possibly belong to the plant that produced Hemitrapa trapelloidea Miki fruits. Trapa pellendorfensis Wojcicki & Kovar-Eder sp. nov. (fruits) co-occurs with H. trapelloidea even on the same bedding planes. The lower, ap- proximately 2.7 m thick part of the investigated pelite is characterized by a mass-occurrence (monodominant) of Decodon leaves. In the upper approximately 1.1 m species are more diverse in aquatic plants: Nitellopsis majori- formis (Papp) Schwarz comb. nov., Stephanochara aff. rochettiana (Heer) Feist-Castel, Ceratophyllum schrotz- burgense Hantke, Ceratophyllum sp. (fruits), Nymphaeaceae (rhizome fragments), Hemitrapa trapelloidea, Trapa pellendorfen...
Trapa assamica, a new extant species from the northeastern part of the Indian Subcontinent, is de... more Trapa assamica, a new extant species from the northeastern part of the Indian Subcontinent, is described, illustrated, and compared to its nearest relatives. It is easily distinguished from its congeners mainly by: its truncate-obpyramidal fruit with a highly protruding basal ring; slightly retrorse or divergent horns flattened apically and with characteristic triangular mat areas on their adaxial surface; reduced, truncate lower horns; stout, truncate tubercles between the lower and upper horns located always close to the base of upper horns; and an immersed basal scar.
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