The image on the cover and title page is a stylized dendrogram of paraphyly (see Plate 1.1).
This is, in macroevolutionary terms, an ancestral taxon of two (or more) species or of …

A key is presented for the 22 known species of Didymodon (Musci) in North America north of
Mexico, with taxonomic commentaries for each. A phylogram combining PCA ordination and …

Classical systematists infer evolutionary monophyly by using clues to adaptive or relatively
neutral transformative radiation. If such clues are on a logarithmic scale they may be added …

Simões et al.() argued that large matrices are linked to the construction of “problematic”
characters, and that those characters negatively affect tree topology. In their re‐evaluation of …

In the discussion in this journal, from the title referring to “the inevitability of paraphyletic
taxa” by Sosef (46: 75–85. 1997) and the follow-up title “Paraphyletic taxa are inherent in …

BACKGROUND: For too many years the practice of systematics has been impeded by
profound disagreements about the very foundations of this discipline, that is to say the type …

Phylogenetic systematics, especially involving molecular data, has had a remarkable impact
on systematic biology. Numerous tree-building computer programs exist for the …

This commentary offers a critical assessment of the molecular age of biological systematics
and deals with certain basic tendencies that seem to indicate a new phase of the discipline …

Phylogeny, be it morphological or molecular, has long tried to explain the extant biodiversity
by the Tree of Species, which is a logical consequence of strict Darwinian evolutionary …

Plant classification and nomenclature are in a continuing state of flux and heated debate
between two opposing schools-1) traditional taxonomists supporting" evolutionary" or" …