Sesquiterpene lactones of diploid and tetraploid Ambrosia camphorata

Diploid and tetraploid specimens of Ambrosia camphorata have distinct sesquiterpene lactone patterns; however, no direct correlation between chemistry and morphological patterns is detectable.     

Die flavonolglykoside von Equisetum telmateja

Nine kaempferol glycosides, including the hitherto unkown 3-β-d-(6-O-acetylglucoside)-7-β-d-glucoside and 3-β-d-(6-O-acetylglucoside)-7-α-l-rhamnoside, have been isolated from Equisetum telmateja of European origin.     

Ultrastructural,micromorphological and phytochemical evidence for a “Central Position” ofMacarthuria (Molluginaceae) within theCaryophyllales

Subtype PIII sieve-element plastids, anthocyanins, spinulose, perforate-tectate pollen grains and the specific seed-coat sculpturing found in twoMacarthuria species (M. australis, M. neocambrica) consolidate their placement withinMolluginaceae. The unique form of the sieve-element plastids, i.e. with cubic crystals and starch grains (PIIIc″fs), finds its closest counter-part inLimeum. The multiple intertwinement of different genera of theMolluginaceae with many other centrospermous families led to a consideration of their more central position withinCaryophyllales.     

The constitution of the order centrospermae: rRNA-DNA hybridization studies among betalain- and anthocyanin-producing families

Ribosomal RNA homologies and the thermal stabilities of rRNA/DNA hybrids among ten species of the Centrospermae (including three from the family Caryophyllaceae and seven from five betalain-producing families), three other angiosperms, and one fern, suggest that the betalain-producing families are phylogenetically closer to each other than to the anthocyanin-producing families which are examined.