This section is from the book "Sub-Alpine Plants Or Flowers Of The Swiss Woods And Meadows", by H. Stuart Thompson. Also available from Amazon: Sub-Alpine Plants: Or, Flowers of the Swiss Woods and Meadows.
A small genus of about 10 species, inhabiting Europe, Asia, and America.
Stem 1-2 feet high, erect, furrowed, hollow, glabrous, like the leaves, or with a few scattered hairs. Rachis of panicle glandular-downy. Leaves pinnatifid, segments ovate-lanceolate or lanceolate, entire, acute or acuminate, often curled, dark green. Flowers in a terminal panicle, handsome, bluish or white, with orange-yellow anthers.
Carpathians, Eastern and Central Alps, Savoy, Jura, Pyrenees, Caucasus, Siberia, North America, Central and Northern Europe. British.