This paper presents new records and noteworthy data on the following taxa in SE Europe adjacent regions: red algae Sheathia confusa, parasitic fungus Anthracoidea caryophylleae, mycorrhizal fugus Hydnellum caeruleum, bryoparasitic Octospora erzbergeri, liverwort Cephaloziella baumgartneri, mosses Hamatocaulis vernicosus, Streblotrichum convolutum var. commutatum Ulota crispula, monocots Ophrys ...

This paper presents new records and noteworthy data on the following taxa in SE Europe adjacent regions: brown alga Heribaudiella fluviatilis, red Batrachospermum skujae, saprotrophic fungus Gnomonia geranii-macrorrhizi, mycorrhizal fungi Amanita alseides Russula griseascens, liverwort Ricciocarpos natans, moss Blindia acuta, Leucodon sciuroides var. morensis Pseudostereodon procerrimus, monoco...

There is a relatively long history of plant hybridization traced back to ancient time, both from theoretical as well practical perspectives. At first considered an evolutionary dead-end, it was soon recognized have important role in speciation. Beside his work on pea, G.J. Mendel also conducted interspecific using several species including Hieracium. Current knowledge shows that the frequent oc...

Parasites are considered to be an important selective force in host evolution but ecological studies of host-parasite systems are usually short-term providing only snap-shots of what may be dynamic systems. We have conducted four surveys of helminths of bank voles at three ecologically similar woodland sites in NE Poland, spaced over a period of 11 years, to assess the relative importance of te...

Hieracium praealtum forms seeds asexually by apomixis. During ovule development, sexual reproduction initiates with megaspore mother cell entry into meiosis and formation of a tetrad of haploid megaspores. The sexual pathway ceases when a diploid aposporous initial (AI) cell differentiates, enlarges, and undergoes mitosis, forming an aposporous embryo sac that displaces sexual structures. Embry...

New Zealand Journal of Ecology (1998) 22(2): 121-140 ©New Zealand Ecological Society primarily for wool production, the c. 1 million ha of montane-subalpine short-tussock (Festuca novae-zelandiae) grassland in the subhumid and humid zones have proved particularly susceptible. By 1990 Hieracium species were dominant in about 50% of these grasslands (Hunter, 1991). H. pilosella is well adapted to...