This genus differs mainly from the last in having only one of the outer petals spurred or inflated, the other being flat, and in the inflated 2-valved capsule; the flowers are also smaller. The Greek name for Fumitory. Species numerous in the Mediterranean region, a few extending to America, South Africa, and north-western Asia.

1. G. lutea. - A common European plant, found naturalised in some parts of England. A perennial fibrous-rooted herb, about a foot high. Leaves on long petioles, ternately divided. Flowers yellow, in leaf-opposed racemes, from May to August.

2. G. nobilis. - This is a fine large yellow-flowered species, a native of Siberia, producing its flowers in early Spring. It belongs to the tuberous-rooted section, and has unbranched stems about a foot high, and dense racemes of bright yellow flowers.

G. Marshalliana is a dwarf tuberous-rooted species from Asia Minor, having pale yellow racemose flowers and a pair of biternate leaves on each stem; G. solida is a tufted species about 6 inches high, with biternate glaucous leaves and unilateral racemes of rosy flowers from the axils of laciniate bracts; and C. tuberosa, syn. G. cava, is similar to the last, with white flowers and entire bracts. These two are both European species.