Taxonomy and Phylogeny of Helenium scaposum (Asteraceae, Helenieae, Gaillardiinae).

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 ...

NUMBERl BIERNER AND JANSEN: HYMENOXYS AND TETRANEURIS 17 SYSTEMATIC IMPLICATIONS OF DNA RESTRICTION SITE VARIATION IN Hymenoxys AND Tetraneuris (ASTERACEAE, HELENIEAE, GAILLARDIINAE)

Generic delimitation in the Hymenoxys complex has long been problematic. One taxonomic extreme would recognize only Hymenoxys, whereas the other would split the obviously related taxa into as many as eight genera. This study examined restriction site variation in both cpDNA and nrDNA in the Hymenoxys complex. Fifty-six populations representing 21 species (four with two varieties each) and six o...

Molecular phylogeny and taxonomy of Eurasian Neoerysiphe species infecting Asteraceae and Geranium

Because Eurasian samples of Neoerysiphe collected on the Asteraceae were not identical in morphology, the molecular and morphological differences among these specimens were compared with those of the American N. cumminsiana. Neoerysiphe on Asteraceae was found to consist of at least four different species. Three of them are described as new species, viz. N. hiratae, N. joerstadii, and N. nevoi....

Tribal Interrelationships and Phylogeny of the Asteraceae

A Baraminological Analysis of Subtribe Flaveriinae (asteraceae: Helenieae) and the Origin of Biological Complexity

WHAT THIS ARTICLE IS ABOUT The subtribe Flaveriinae (Asteraceae: Helenieae) includes a number of plant species sometimes called yellowtops, glowworts, and false broomweed. Different species of this subtribe differ in their chemical pathways involved in photosynthesis. Somes species use a system known as C 3 photosynthesis, some use a system known as C 4 photosynthesis, and others display charac...