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THE FLAVONOIDS AND AFFINITIES OF BLENNOSPERMA AND CROCIDIUM (COMPOSITAE)
Author(s) -
Ornduff Robert,
Saleh N. A. M.,
Bohm B. A.
Publication year - 1973
Publication title -
taxon
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.819
H-Index - 81
eISSN - 1996-8175
pISSN - 0040-0262
DOI - 10.2307/1219326
Subject(s) - affinities , senecioneae , quercetin , botany , biology , glycoside , traditional medicine , taxonomy (biology) , biochemistry , medicine , antioxidant
Summary The tribal affinities and inter‐relationships of the Californian‐Chilean Blennosperma and the western American Crocidium (Compositae) have been the subject of controversy since the mid‐nineteenth century. Most recent workers have placed Blennosperma in the Helenieae and Crocidium in the Senecioneae. Investigations of the flavonoids of these genera indicate that at the generic level both contain quercetin‐3‐o‐galactoside, (probably isomeric) quercetin‐3‐o‐glucoside, a quercetin‐3‐o‐polyglucoside, and luteolin‐7‐o‐glucoside. The first two compounds were present in all samples tested, but the other two glycosides were not. These striking biochemical similarities and the weight of morphological evidence suggest that the two genera are closely related to each other. Both should probably be placed in the Senecioneae.