Flow cytometry measurements of ploidy level in British Hieracium section Foliosa and section Prenanthoidea (Asteraceae)

Hieracium maccoshiana, a new Scottish hawkweed related to H. dovrense (Section Alpestria, Asteraceae)

A new species of hawkweed Hieracium maccoshiana T.C.G.Rich sp. nov. is described. It is related to the Norwegian Hieracium dovrense Fr., but differs in the shape and toothing of the stem leaves and in having glabrous-tipped ligules. It is endemic to the county of Sutherland, Scotland where it has been recorded from four sites. A lectotype of Hieracium dovrense is designated.

Molecular phylogeny and taxonomy of species of Cousinia section Stenocephalae (Asteraceae) in NE of Iran

In this study, the phylogeny and morphological variation of 6 species of the genus Cousinia sect. Stenocephalae, i.e., C. hypopolia, C. decipiens, C. esfandiarii, C. renominata, C. stahliana and C. daryoushiana, distributed in NE regions of Iran, were investigated. ITS, ETS and rpl32-trnL (UAG) sequences for 12 species (17 specimens) were generated. Phylogenetic interspecies relationships were ...

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Threshold Cross Section Measurements

Accurate measurements of particles masses, couplings and widths are possible by measuring production cross sections near threshold. We discuss the prospects for performing such measurements at a high luminosity muon collider.

Special Section: Quantum Measurements

Unitary evolution and projective measurement are fundamental axioms of quantum mechanics. Even though projective measurement yields one of the eigenstates of the measured operator as the outcome, there is no theory that predicts which eigenstate will be observed in which experimental run. There exists only an ensemble description, which predicts probabilities of various outcomes over many exper...