The genusPlagius (Compositae, Anthemideae)

Wood Anatomy of Anthemideae, Ambrosieae, Calenduleae, and Articotideae (Compositae)

Exudate flavonoid aglycones in the alpine species of Achillea sect. Ptarmica: Chemosystematics of A. moschata and related species (Compositae-Anthemideae).

In completion of our studies on Achillea exudate flavonoids, 11 alpine species of Achillea sect. Ptarmica were analyzed for their aglycone profiles. The study focuses on species commonly associated with A. moschata. The major flavonoid constituents found in exudates of most taxa were 6-hydroxyflavonol 3,6,4'-trimethyl ethers, except in A. ageratifolia and its subspecies, which are characterized...

Tanacetum zahlbruckneri (Compositae-Anthemideae), an enigmatic record from Iran and its phylogenetic position

Tanacetum zahlbruckneriis reported as a new record from northwestern Iran. A complete description, diagnostic characters and a distribution map of T. zahlbruckneriare presented. The phylogenetic position of T. zahlbruckneri in a concise molecular framework based on the sequences of ITS nrDNA data are presented. A taxonomic conclusion about the previously reported samples of this enigmatic speci...

گونه tanacetum zahlbruckneri (compositae-anthemideae)، یک رکورد معمایی از ایران و موقعیت فیلوژنتیکی آن

گونهtanacetum zahlbruckneri  از شمال غرب ایران (ارومیه، سرو) برای فلور ایران گزارش می شود. این گونه معمایی پیش از این دو بار به اشتباه از ماکو و دره قاسملوی ارومیه برای ایران به عنوان گزارش جدید معرفی شده بود. شرح کامل گیاه شناسی، صفات متمایز کننده و پراکنش گونه در دنیا به همراه جایگاه فیلوژنتیکی آن براساس داده های توالیnrdna  its در چارچوب مولکولی در کنار سایر گونه های جنس tanacetum ارایه شده ...

Cladistics and Generic Concepts in the Compositae

Introduction Taxonomy classes are often taught that we as systematists are concerned with grouping and ranking. We are actually concerned with two levels of grouping: the grouping of individuals (into species), and the grouping of these "groups of individuals." There are, therefore, only two categories, species and groups of species (Nelson and Platnick, 1981). If we strive to make our species ...