Chemosystematic aspects of flavonoid distribution in twenty-two taxa of Helenium

The systematic identification of flavonoids

Luo G. · Journal of Molecular Structure · 1971 · 419 citations

Systematic Identification, Polyphenolics, Biochemistry +3

Chromosome Numbers in North and Central American Compositae

Jerold L. Grashoff, Mark W. Bierner, David K. Northington · Brittonia · 1972 · 31 citations

Genetic Diversity, Molecular Ecology, Cytogenetics +7

Constituents of Helenium species. XXI. Sesquiterpene lactones of Helenium alternifolium. Structures of brevilin A, linifolin A, and alternilin

Werner Herz, Charles M. Gast, P. Subramaniam · The Journal of Organic Chemistry · 1968 · 29 citations

Sesquiterpene Lactones, Helenium Alternifolium, Bioorganic Chemistry +13

A QUICK METHOD FOR COMPUTING WAGNER TREES

Trevor Whiffin, Mark W. Bierner · Taxon · 1972 · 19 citations

Helenium L. Sect, Engineering, Botany +22

Taxonomy of Helenium Sect. Tetrodus and a Conspectus of North American Helenium (Compositae)

Mark W. Bierner · Brittonia · 1972 · 16 citations

Arthropod Taxonomy, Phylogenetics, Natural Sciences +4