A közlemény az Orobanche reticulata néhány új magyarországi adatáról számol be. fajt a szakirodalomban ismeretlen gazdanövényről, Carduus hamulosus-ról gyűjtöttük Keleti-Bakonyban, Bér-hegyen. Magyarországon általában májustól júliusig virágzó faj életmenetéhez érdekes adalék egy extrém csapadékos év (2010) enyhe őszén megfigyelt késői, októberi virágzása is. Egy másik populáció (Vértes hegység...

A review of information on the release of Rhinocyllus conicus to control of Carduus spp. thistles in North America suggests at least 8 lessons for future biological control efforts. These lessons include the need for: 1) better a priori quantification of the occurrence and ecological effects of the weed; 2) improved incorporation of ecological criteria to supplement the phylogenetic information...

Weedy invasive Cirsium spp. are widespread in temperate regions of North America and some of their biological control agents have attacked native Cirsium spp. A phylogenetic tree was developed from DNA sequences for the internal transcribed spacer and external transcribed spacer regions from native and non-native Great Plains Cirsium spp. and other thistles to determine if host specificity foll...

Musk thistle is an invasive weed that is widely distributed throughout much of North America, including grasslands in temperate climates of the midwest USA. A series of laboratory and greenhouse experiments were conducted to determine the effect of various environmental factors on germination of musk thistle seeds. In temperature-fluctuation experiments, seed germination was greater than 65% in...