W. S. Armbruster

Pollination Syndromes and Floral Specialization

Michele R. Dudash, Paul Wilson, James D. Thomson, 2004 .

Phylogenetic perspectives on diversification, biogeography, and floral evolution of Collinsia and Tonella (Plantaginaceae).

S. Kalisz, B. G. Baldwin, W. Armbruster, 2011, American journal of botany.

EXAPTATIONS LINK EVOLUTION OF PLANT–HERBIVORE AND PLANT–POLLINATOR INTERACTIONS: A PHYLOGENETIC INQUIRY

W. Armbruster, W. S. Armbruster, 1997 .

Constrained lability in floral evolution: counting convergent origins of hummingbird pollination in Penstemon and Keckiella.

J. Thomson, W. Armbruster, A. Wolfe, 2007, The New phytologist.

Non-equilibrium dynamics and floral trait interactions shape extant angiosperm diversity

L. Harder, Stephen A. Smith, P. Stevens, 2016, Proceedings of the Royal Society B: Biological Sciences.