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 1S39. 2. Batrachium circinatum (Sibth.) Rchb. White Water-Crowfoot. Fig. 1928. Ranunculus circinatus Sibth.; J. E. Smith, Fl. Brit. 2 : 596. Batrachium circhiatum Rchb.; Spach, Hist. Veg. 7: 201. R. aquatilis var. divaricatus A. Gray, Man. Ed. 2, 7. 1856. Similar to the preceding species, but the leaves are shorte
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 1S39. 2. Batrachium circinatum (Sibth.) Rchb. White Water-Crowfoot. Fig. 1928. Ranunculus circinatus Sibth.; J. E. Smith, Fl. Brit. 2 : 596. Batrachium circhiatum Rchb.; Spach, Hist. Veg. 7: 201. R. aquatilis var. divaricatus A. Gray, Man. Ed. 2, 7. 1856. Similar to the preceding species, but the leaves are shorter, less than l' long, spreading nearly at right angles from the stem, rigid when withdrawn from the water and sessile or nearly so; there appear to be no constant differences in flower or fruit. In ponds and slow streams, Ontario, New England, northern New Jersey and Pennsylvania, and west to the Pacific Coast, ex- tending south in the Rocky Mountains to Arizona. Also in Eu- rope. Summer. Referred in our first edition to Batrachium divaricatum (Schrank) Winimer. Batrachium longirostre (Godr.) F. Schultz, if distinct from this species, differs in having a longer beak to the achene. I. Batrachium trichophyllum (Chaix) F. Schultz. White Water-Crowfoot. Fig. 1927. Ranunculus trichophyllus Chaix in Vill. Hist. PI. Dauph. I : 335. 1786. Batrachium trichophyllum F. Schuhz, Arch. Fl. France et All. I ; 107. 1848. Ranunculus aquatilis var. trichophyllus A. Gray, Man. Ed. 5. 40. 1867. R. aquatilis var. caespitosus DC. Prodr. i : 26. 1824. R. aquatilis capillaceus DC. Prodr. i : 26. 1824. Submerged; stems branching, usually 1° long or more. Leaves petioled, 1-2' long, flaccid and col- lapsing when withdrawn from the water, repeatedly forked into capillary divisions; flowers white, 6'-9' broad, on stout peduncles i'-2' long, blooming at the surface of the water; head of fruit globose, 2' broad; receptacle hairy; achenes apiculate. In ponds and streams, Nova Scotia to British Colum- bia, s
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