P. Saxifraga: stems erect, 1-2 feet high, slightly branched, glabrous; leaves usually pinnate, with 7-9 pairs of broadly ovate or orbicular toothed segments, those of the stem bipin-natifid with linear segments; umbels terminal, with 10-15 rather slender rays; flowers white. - Pastures, roadsides, etc. Fl. July, August.
P. magna: larger and stouter than the last; the stems often two feet high or more; leaf-segments usually undivided, ovate or lanceolate, with more pointed teeth; flowers pink. - Shady places. Fl. July, August.