Mark W. Bierner
University of Tennessee
7 Papers
94 Citations
Mark W. Bierner is an academic researcher from University of Tennessee. The author has contributed to research in topics: Flavones & Helenium. The author has an hindex of 6, co-authored 7 publications.
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Papers
Chromosome numbers in North and Central American Compositae
TL;DR: Chromosome numbers are reported for 364 collections representing 70 species and varieties in 16 genera, including one new combination, Stevia anadenotricha, and one new variety,Stevia subpubescens var.intermedia.
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Chemosystematic aspects of flavonoid distribution in twenty-two taxa of Helenium☆
TL;DR: Distributional data for 12 flavonoids in twenty-two taxa of Helenium are presented and Chemosystematic interpretations are made concerning several species and species groups.
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Taxonomy of Helenium sect. Tetrodus and a conspectus of North American Helenium (Compositae)
TL;DR: A systematic treatment for the 14 recognized taxa of Tetrodus is presented in this paper, with synonymies, typifications, descriptions, discussions, and range maps; a brief conspectus of Helenium in North America is presented recognizing five sections: sect.Hecubaea (DC.) Gray with two species in Mexico, sect.Leptopoda (Nutt.) Wood with six species in the eastern and southeastern United States; sect.Tetrodus (Cass.) DC. with 14 taxa in the western and southwestern United States, Mexico,
13
Flavonoids of Plummera: Taxonomic implications at the generic level within the gaillardiinae
TL;DR: It is the opinion of the author that Plummera is very closely related to, but not congeneric with Hymenoxys, as well as other genera in the subtribe Gaillardiinae.
12
Distribution of flavonoids and their systematic significance in Clematis subsection Viornae
TL;DR: Fifteen flavonoids were identified in the eight taxa of Clematis subsection Viornae and the compounds were based primarily on luteolin, apigenin, quercetin, and kaempferol.
11