Lupinus x hispanicoluteus - an interspecific hybrid of Old World lupins
<em>Lupinus</em> species are distributed in two centers of origin: in the Old and New World. In the Old World, 13 lupin species have been recognized hitherto in the Mediterranean basin (mostly with different chromosome numbers and not out-crossing in situ), including three lupin crops, i.e. <em>L. albus</em>,<em> L. angustifolius</em> and <em>L. luteus</em>. Interspecific crossing within this group is interesting from the theoretical as well as practical point of view - for breeding improvement. Results of crossing of two Old World <em>Lupinus</em> species are presented: <em>L. hispanicus</em> subsp. <em>hispanicus</em> x <em>L. luteus</em>. Description and a diagnosis of the synthetic, stable hybrid is presented. The standard and wings from bud to open flower are yellow-violet to violet. The inflorescence is yellow-violet at the top, changing gradually to violet bottom when older. Plant habitus and smooth seed surface as in <em>L. luteus</em>. Dark green colour of leaves, not scented flowers and angular edge of compressed seeds as in <em>L. hispanicus</em>. The name <em>L.</em> x <em>hispanicoluteus</em> is proposed.