Beschreibung:
<jats:title>SUMMARY</jats:title><jats:p>Investigations of<jats:italic>Viscum album</jats:italic>on 16 different host species revealed an endogenous cyclitol pattern with pinitol, 1‐<jats:italic>O</jats:italic>‐methyl‐<jats:italic>muco</jats:italic>‐inositol, quebrachitol,<jats:italic>chiro</jats:italic>‐inositol, an unidentified<jats:italic>O</jats:italic>‐methyl‐inositol and traces of ononitol. Host‐specific cyclitols including bornesitol, quercitol, viburnitol,<jats:italic>scyllo</jats:italic>‐inositol and the hexitol, sorbitol, were also stored in the mistletoe. The endogenous cyclitols were accumulated to such high concentrations that they made a large contribution to the osmotic potential. It was estimated that 22.6–43 % of mistletoe carbon is derived from the host.</jats:p>