Edmund H. Crane, Donald R. Farrar, Jonathan F. Wendel, Phylogeny of the Vittariaceae: Convergent Simplification Leads to a Polyphyletic Vittaria, American Fern Journal, Vol. 85, No. 4, Use of Molecular Data in Evolutionary Studies of Pteridophytes (Oct. - Dec., 1995), pp. 283-305
No takes yet. Share an insight, caveat, or question.
Crane et al. (1995) studied this question.
Synapse has enriched 3 closely related papers on similar clinical questions. Consider them for comparative context: