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An Updated Phylogenetic Classification Of The Flowering Plants, Robert F. Thorne
An Updated Phylogenetic Classification Of The Flowering Plants, Robert F. Thorne
Aliso: A Journal of Systematic and Floristic Botany
This update of my classification of the flowering plants, or Angiospermae, is based upon about 800 pertinent books, monographs, and other botanical papers published since my last synopsis appeared in the Nordic Journal of Science in 1983. Also I have narrowed my family- and ordinal-gap concepts to bring acceptance of family and ordinal limits more in line with those of current taxonomists. This new information and the shift in my phylogenetic philosophy have caused significant changes in my interpretation of relationships and numbers and content of taxa. Also the ending "-anae" has been accepted for superorders in place in the …
Distribution And Evolution Of Forms And Types Of Sieve-Element Plastids In The Dicotyledons, Dietmar Behnke
Distribution And Evolution Of Forms And Types Of Sieve-Element Plastids In The Dicotyledons, Dietmar Behnke
Aliso: A Journal of Systematic and Floristic Botany
Sieve-element plastids may contain any combination of protein crystals (c), protein filaments (f), and starch grains (s), or none of these. All structurally distinct combinations (=forms) possible (s, cs, cfs, c, cf, fs, f, o) are recorded among the 2100 dicotyledons investigated so far with the transmission electron microscope (representing 381 of more than 460 families described). The six forms that include c and/or f define the P-type and are found in some 620 species, mainly confined to Magnolianae, Caryophyllanae, Vitanae, and Rutanae (Fabales, Linales, Rhizophorales). A detailed family-by-family analysis and quantitative form-by-form comparison suggests that form-Ss plastids give rise …