RANUNCULACE^. 27 



in the water, and bearing its white, smallish flowers on the sur- 

 face ; flowers in July, running waters. This is a beautiful spe- 

 cies, scarcely to be mistaken. It seems to be distinct from the 

 preceding, with which it is ranked by Torrey and Gray, and from 

 the following, which it no more resembles. This is the plant 

 described by Dr. Bigelow in " Flor. Bost.," p. 227. 



R. multifidus. Pursh. Water Buttercups. In general ap- 

 pearance, this plant greatly resembles R. aquatilis above, but the 

 part projecting from the water, while it bears large, yellow, bright 

 flowers, has no leaves, or the mere rudiment of a leaf at the 

 joint. It is a larger, coarser plant than the others. For a good 

 reason, it was named R. lacustris by Beck and Tracy ; but it 

 seems not to belong to R. Purshii, Richardson. For preserving 

 it a distinct species, there is good authority. Under the name 

 above, it is described in "Flor. Bost." p. 228. 



R. cymbalaria. Ph. Sea Crowfoot. Stem filiform, smooth, 

 sending out stolons, rooting at the joints, with radical leaves reni- 

 form, on long foot-stalks, and with crenate border ; flowers yel- 

 low, petals spatulate ; grows on salt marshes. Big. 



R. Pennsylvanicus. L. Bristly Crowfoot. Flowers in Au 

 gust in woods and meadows, and is a large, branching plant, 

 covered with horizontal, hairy bristles, or is hispidly pilose, 1-2 

 feet high. T. and Gr. Itis well described in "Plor. Bost." £i^. 



R. fascicularis. Muhl. Roots fascicled, fleshy ; stem short ; 

 radical leaves ternate, and on long stalks, rather variously di- 

 vided ; whole plant has a smooth, silky pubescence ; calyx vil- 

 lous and spreading, and yellow inside ; flowers in April and May, 

 and grows on dry, rocky hills. Big. 



R. hirsutus. Curtis. Rough Crowfoot. Whole plant hirsute, 

 rough-hairy, branching, with leaves 3-lobed or ternate, with ob- 

 tuse sections ; flowers whitish-yellow, in a reflexed calyx ; grows 

 in wet fields, and is in flower in July. 



