RANUXCULACEiE. 



35 



4. R. aquatilis, L. (Var. trichophyllus, Gray.) (White Water-crowfoot.) 

 Stem 1 to 2 feet long, slender, weak, ronnd, smooth, jointed, floating. Leaves 

 stalked, dicliotomously divided into many diverging hairlike segments, sub- 

 merged, or some floating, rounded, 3-5-lobed. Petals white, narrow. June 

 to August. 



Geography. — Found sparingly from Arctic America to South Carolina, west 

 to the Tvocky Mountains. In ponds and sluggish streams. 



5. R. bulbosus, L. (Bull)ous Crowfoot. Buttercup.) Stem 8 to 13 inches 

 liigh, hollow, erect, s])aringly clothed with a])pressed ])ube.scence, or densely cov- 

 ered witli stiff, spreading hairs, somewhat branched, enlarging at the base into 

 a bulb. Leaves mostly 



radical, on long stalks, 

 teruate, middle leaflet 

 stalked, lateral divisions 

 sub-sessile, lobed, with 

 crenate or acute divi- 

 sions ; stem leaves on 

 short sheathing petioles, 

 or nearly sessile; lobes 

 much cut into linear di- 

 visions. Flowers bright- 

 yellow, large, showy, be- 

 coming double by culti- 

 vation. Petals rounded, 

 wedge-shaped at base, 

 nmch longer than the re- 

 flexed sepals, frequently 

 6-7 in number. Carj)els 

 tipped with a short beak. 

 May to August. 



Geo(/raj)hi/. — This is 

 eminently a British plant, 

 and was no doubt intro- 

 duced into northeastern 

 North America by Brit- 

 ish colonists in their seed- 

 grain, etc. Abundant in 

 the damp meadows and 

 pastures of the Atlantic 

 States, especially in New England and eastern New York and New Jersey. 



6. R. Cymbalaria, Pursh. (Seaside CroA\'foot.) Stem slender, 3 to 8 inche.^ 

 long, creeping and rooting. Leaves clustered near the root, cordate, kidney- 

 shaped, crenate-dentate. Flowers bright-yellow, scapes 3 to 6 inches long, 

 1-7 flowered, mostly without leaves. Petals 5-8, oval. Carpels striate, beak 

 short. June to August. 



Geography. — Coast of New Jersey, northward to Canada, along the borders 

 of salt mar.shes, especially coasts of the Bay of Fundy ; near salt springs ; 

 inland along the Great Lakes; west to California. 



7. R. fascicularis, Muhl. (Fascicle-rooted Crowfoot. Early Crowfoot.) 

 Stem erect, G to 10 inches high, clothed with silky hairs: root a bundle of fleshy 

 fibers. Leaves of tlie ujtper jiart of the stem on sliort petioles, the radical and 



Ranunculus fasciculakis (Fascicle-rooted Crowfoot). 



