Calyx shortly turbinate at the base. Petals nearly equal. Pod sessile or shortly stalked, linear or oblong, inflated, valves slightly coriaceous. Herbs with creeping rhizomes. Leaves digitately trifoliolate; stipules foliaceous, free. About twelve species are described, all inhabiting the north temperate zone. The name is compounded from the Greek 2 Thermopsis 113 a lupine, and

2 Thermopsis 114 appearance or resemblance.

1. Th. fabacea. - A pretty erect herbaceous summer-flowering plant somewhat woody at the base, about 2 feet high. Leaflets ovate-lanceolate, hairy beneath. Flowers yellow, about an inch across, in terminal loose racemes. Siberia.