The YELLOW WATER BUTTERCUP or CROWFOOT (R. deiphinifolius; R. multifidus of Gray) found blooming in ponds through the summer months, certainly justifies the family name derived from rana = a frog. Many other members grow in marshes, it is true, but this ranunculus lives after the manner of its namesake, sometimes immersed, sometimes stranded on the muddy shore. Two types of leaves occur on the same stem. Their waving filaments, which make the immersed leaves look fringy, take every advantage of what little carbonic acid gas is dissolved under the surface. Moreover, they are better adapted to withstand the water's pressure and possible currents than solid blades would be. The floating leaves which loll upon the surface to take advantage of the air and sunlight, expand three, four, or five divisions, variously lobed. On this plant we see one set of leaves perfectly adapted to immersion, and another set to aerial existence. The stem, which may measure several feet in length, roots at the joints when it can. Range from the Mississippi and Ontario eastward to the Atlantic Ocean. The WHITE WATER-CROWFOOT (Batrachium trichophyllum; Ranunculus aquatilis of Gray) has its fine thread-like leaves entirely submerged; but the flowers, like a whale, as the old conundrum put it, come to the surface to blow. The latter are small, white, or only yellow at the base, where each petal bears a spot or little pit that serves as a pathfinder to the flies. When the water rises unusually high, the blossoms never open, but remain submerged, and fertilize themselves. Seen underwater, the delicate leaves, which are little more than forked hairs, spread abroad in dainty patterns; lifted cut of the water these flaccid filaments utterly collapse. In ponds and shallow, slow streams, this common plant flowers from June to September almost throughout the Union, the British Possessions north of us, and in Europe and Asia. The WATER PLANTAIN SPEARWORT (K. obtusiusculus; R. a/isrnaefoiius of Gray) flecks the marshes from June to August with its small golden flowers, which the merest novice knows must be kin to the buttercup. The smooth, hollow stem, especially thick at the base, likes to root from the lower joints. A peculiarity of the lance-shaped or oblong lance-shaped leaves is that the lower ones have petioles so broad where they clasp the stem that they appear to be long blades suddenly contracted just above their base. BARBERRY; PEPPERIDGE-BUSH (Berberis vulgaris) Barberry family