Hardy perennials for dry places

To the West of us gardeners are quite concerned with the consequences of global warming. In recent year for example they have paid much attention to hardy plants for dry places.

The great German nursery Staudengärtnerei Gaissmayer from where I often order plants has dedicated a separate page to hardy perennials for dry places. It is divided in four sub-lists:
perennials for dry sunny places,
grasses for dry sunny places,
plants growing both in dry part-shade and in dry shady places,
and plants for dry, windy and sandy soils.

If you are interested, you can also read some articles on this topic on their page. If you read just some basic German, you are encouraged to have a look at them. They are easy to read and very informative.