Forum Flora Germanica

According to some sources they are synonims(sample: http://www.plantlist.org/tpl1.1/record/ ... 1?ref=tpl1).
Alpenflora says they are diff. species. So if this
http://agrozoo.net/jsp/Galery_one_image ... 50a9770dfe
is Rhamnus pumila (see smooth leaf underside) ....

any image outhere that shows dense hairy leaf underside of frangula rupestris (according to alpenflora) ?

You must always have a look at the author:
Rhamnus pumila Wulfen is synonym of Frangula rupestris whereas Rhamnus pumila Turra is synonym of Atadinus pumilus.

Thomas

The pictures show my herbar specimen of Frangula alnus from Parnassos, Greece, 1996