Leitneriaceæ

Natural family of flowering plants, of the cla Angiospermæ and sub-cla Dicotyledons, consisting of a single genus and species, inhabiting the s. U. S. Lake Leman (at the upper end). waters oscillate with a rise and fall of from 2 to 5 ft. in 10 minutes. The Rhone, entering at one end muddy, i ues forth at Geneva transparent.