An illustrated flora of the An illustrated flora of the northern United States, Canada and the British possessions : from Newfoundland to the parallel of the southern boundary of Virginia and from the Atlantic Ocean westward to the 102nd meridian ed2illustratedflo02brit Year: 1913 32. Ranunculus arvensis L. Corn Crow- foot. Hunger-weed. Fig. 1926. â âIus L. Sp. PI. 55 1753- Erect, glabrous or sparingly pubescent, branched above, 1° or more high. Lower leaves petioled, the upper sessile, all deeply cleft or divided into linear-oblong, obtuse cuneate, lobed or toothed segments or the low- est
An illustrated flora of the An illustrated flora of the northern United States, Canada and the British possessions : from Newfoundland to the parallel of the southern boundary of Virginia and from the Atlantic Ocean westward to the 102nd meridian ed2illustratedflo02brit Year: 1913 32. Ranunculus arvensis L. Corn Crow- foot. Hunger-weed. Fig. 1926. â âIus L. Sp. PI. 55 1753- Erect, glabrous or sparingly pubescent, branched above, 1° or more high. Lower leaves petioled, the upper sessile, all deeply cleft or divided into linear-oblong, obtuse cuneate, lobed or toothed segments or the low- est entire; flowers 6'-8' broad, pale yellow, the petals exceeding the sepals; achenes 4-8. flattened, margined, spiny-tuberculate on the sides and margin, 2' long, tipped with a sub- ulate beak more than one-half their length. In waste grounds, southern New York and New Jersey to Ohio, and in ballast. Fugitive from Europe, where it is abundant in grain-fields. Called Hunger-weed because supposed to indicate, when prevalent, a poor crop and consequent want. Starve-acre. Devil's-claws. Hell-weed. Horse- gold. Gold-weed. Summer. 21. BATRACHIUM S. F. Gray, Nat. Arr. Brit. PI. 2: 720. 1821. Perennial aquatic or ditch herbs, with alternate dissected or palmately lobed leaves, the segments of the submerged ones often filiform, and solitary rather small white flowers, borne on peduncles opposite the leaves. Sepals and petals usually 5. Petals oblong or oval, the base sometimes yellowish, the claw bearing a small pit. Stamens several or nu- merous. Achenes oblique, compressed, not margined, beakless or short-beaked, transversely wrinkled. [Greek, referring to the aquatic habitat.] About 20 species of very wide geographic disti occur in western North America. Type species: Ba, Leaves all dissected into filiform segments and lobes. Leaves I'-a' long, flaccid, collapsing when taken from the ' Leaves i' long or less, rigid when taken from the water. Leaves all reniform or broadly ovate, 3
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