Helen J. Michaels

Phylogenetics of Seed Plants: An Analysis of Nucleotide Sequences from the Plastid Gene rbcL

Mark W. Chase, Richard G. Olmstead, David Morgan et al. · Annals of the Missouri Botanical Garden · 1993 · 2.1K citations

Chloroplast DNA Variation and Plant Phylogeny

Jeffrey D. Palmer, Robert K. Jansen, Helen J. Michaels et al. · Annals of the Missouri Botanical Garden · 1988 · 578 citations

Plant Genetics, Chloroplast Dna Variation, Phylogenetics +10

Monophyly of the Asteridae and Identification of Their Major Lineages Inferred From DNA Sequences of rbcL

Richard G. Olmstead, Helen J. Michaels, Kathy M. Scott et al. · Annals of the Missouri Botanical Garden · 1992 · 463 citations · Full text

Seed size variation: magnitude, distribution, and ecological correlates

Helen J. Michaels, B. L. Benner, A. P. Hartgerink et al. · Evolutionary Ecology · 1988 · 229 citations · Full text

Plant Ecology, Biodiversity, Seed Size Variation +1

Phylogeny and Character Evolution in the Asteraceae Based on Chloroplast DNA Restriction Site Mapping

Robert K. Jansen, Helen J. Michaels, Jeffrey D. Palmer · Systematic Botany · 1991 · 124 citations