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Achenes of roses were rarely studied and the studies were focused on anatomical research, mainly on pericarp structure and its development. We investigated the achene morphology by light- and scanning electron microscopy (LM and SEM) of 17 Rosa taxa from three sections (R. gallica from Gallicanae section, R. pendulina and R. rugosa from Rosa section, and R. agrestis, R. canina, R. canina var. corymbifera,...
The pollen morphology of eight species from three subgenera and five sections of the genus Allium L. was studied by LM and SEM (i.e.: A. angulosum, A. carinatum, A. senescens subsp. montanum, A. oleraceum, A. scorodoprasum, A. ursinum, A. victorialis and A. vineale). The material came from natural sites of these species located in Poland, Czech Republic, Austria and Italy. For measurements a sample...
Praca prezentuje wyniki badań nad szatą roślinną nowo utworzonych użytków ekologicznych „Dębina I” i „Dębina II”, o łącznej powierzchni 84,63 ha. Badane użytki ekolo-giczne są położone w południowej części Poznania, na terasie zalewowej doliny Warty. Ich flora liczy 371 gatunków roślin naczyniowych, w tym 76,3% gatunków rodzimych. Stwierdzono wy-stępowanie dwóch gatunków chronionych, 19 gatunków w...
Praca prezentuje wyniki badań nad roślinnością użytków ekologicznych „Bogdanka I” i „Bogdanka II” zlokalizowanych w północno-zachodniej części Poznania. Podczas badań prowadzonych w czasie sezonów wegetacyjnych 2012 i 2013 roku stwierdzono występowanie 69 zbiorowisk roślinnych, w tym 60 zespołów, należących do 13 klas fitosocjologicznych. Dominują zbiorowiska naturalne (68,1%), głównie naturalne auksochoryczne...
Sedges are attractive ornamental plants, thanks to the specific structure of their inflorescences, perigynium morphology, an interesting habit and extended dates of individual phenological stages varying between species. Analyses were conducted on 15 sedge species differing in traits of their inflorescence shoots and varying in the shape and size of perigynia. Species characteristic of diverse habitats...
Projektowany rezerwat „Bełczańskie Starorzecza” jest położony w dolinie Odry na odcinku o długości 19 km i powierzchni ok. 1700 ha. Obszar ten jest chroniony w ramach sieci obszarów Natura 2000, jako część OSO „Łęgi Odrzańskie”. Rośnie tu 45 gatunków roślin drzewiastych z 19 rodzin. W dendroflorze dominują gatunki rodzime (85%), najczęściej związane ze zbiorowiskami roślinnymi typowymi dla dolin rzecznych...
In all, 105 impressive lime trees were inventoried in the Lipka commune of which Tilia cordata Mill. (95 trees) turned out to be the most numerous. The remaining taxa T. ×europaea L., T. platyphyllos Scop. and T. tomentosa Moench had only a very small share. Majority of valuable limes (67) were found to grow along district, local and dirt roads forming avenues. Lime trees in good and very good health...
The “Źródła Rzeki Łyny im. prof. R. Kobendzy” nature reserve was established in 1959 and occupies the area of 120.54 ha. The paper describes fl ora and plant communities of this reserve. In total 409 vascular plant taxa from 70 families and 235 genera were inventoried, including 24 species which are under legal protection, as well as rare plants and those which are threatened in this region. Nine...
The objective of this study was to investigate the ranges of intra- and interindividual variability on the example of R. canina. For this purpose, four flowers were collected randomly (72 flowers in total)from 18 wild shrubs of R. canina growing in one population in Poznań (Poland)and then, from each flower, 50 correctly formed pollen grains (200 pollen grains per each individual)were selected. Inter-...
The inventory carried out in the 19th century historic park in Swadzim near Poznań recorded the total of 1886 trees, bushes and climbers deriving from 64 species. At the present time, the park is neglected and a plan for its revalorization is badly needed. Tree composition is dominated by Quercus robur, Robinia pseudoacacia, Acer pseudoplatanus, Carpinus betulus, Q. rubra and Fagus sylvatica, while...
The morphology of pollen grains of 16 species from the Rosa L. genus were studied (i.e. R. agrestis, R. canina, R. dumalis, R. gallica, R. inodora, R. jundzillii, R. kostrakiewiczii, R. majalis, R. micrantha, R. mollis, R. pendulina, R. rubiginosa, R. sherardii, R. tomentosa, R. villosa, and R. zalana). The material came from 16 native localities of those species in Poland. The measurements are based...
In contrast to other natural objects situated within boundaries of the city of Poznań, the former ecological site "Bogdanka" distinguishes itself by its exceptional floristic values. The flora of this object comprises 527 taxons of vascular plants derived from 91 families and 295 genera, of which 180 can be found on rare and threatened species lists. In addition, 15 species under legal protection...
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