Pleac.thal 85. RANUKCULACE^. 466.Batrach. 721 



1. Batrachium hederaceum. Ivi/leaved water-crowfoot. 

 Stem creeping; leaves nearly kidneyshape, 3 or 54obed; 



lobes broad, not cut, very blunt; petals oblong, scarcely 



longer than the calyx ; stamens 5 to 1 2 ; cariopsides bald. 



Ranunculus aquatilis hederaceus albus, Raii Syn. 249,2. 

 Ranunculus hederulaj folio aquaticus. Park. 1216. 

 Ranunculus hederaceus, Lin. S. P. 781. 

 Ranunculus hederaafolius, Salisb. Prod. 313. 



Inundated places and springs ; perennial ; May to Aug. 



Stems trailing or swimming, rooting, branched, divari- 

 cated ; leaves longly petioled, rather fleshy, smooth j 

 Jiowers small, white. 



2. Batrachium irlpart'itum^ Three-parted water-crowfoot. 

 Stem floating ; leaves under water, many-cut, threadlike, 



out of water 3-parted ; lobes wedgeshaped, toothed at the 

 tip ; petals oblong, rather sharp, as long as the calyx ; ca- 

 riopsides bald. 



Ranunculus tripartitus, micranthus, De Cand. Syst. Nat. 1,234. 

 Ditches and springs ; perennial ; May and June. 

 Flower and cariopsides similar to those of B. hederaceum ; 

 stem, leaves, and habit, similar to B. heterophyllutn. 



S. Batrachium obtusiflorum. Blunt-petaled water-crowfoot. 



Stem floating; leaves under water many-cut, threadlike; 

 out of water 3-parted, lobes wedgeshaped, toothed at the 

 tip ; petals reverse ovate, obtuse, longer than the calyx ; 

 cariopsides smooth. 



Ranunculus tripartitus obtusiflorus, De Cand. Syst.Nat. 1,234. 

 Ranunculus aquatilis 2, With. Bot. Arr. 3, 623, 



Ditches and inundated places ; perennial ; May, June. 

 Leaves under water very few, sometimes 0. 



4. Batrachium heterophyllum. Odd-leaved water-crowfoot. 



Stem floating ; leaves under water many-cut, threadlike ; 

 out of water 3-paried, lobes wedgeshaped, toothed at the 

 tip ; petals reverse ovate, larger than the calyx ; cariopsides 

 bristled ; bristles stiff*. 



Ranunculus aquatilis, Raii Syn. 243, 9; Ger. em. 829,2 ; Lin. S. P. 181, 



Ranunculus aquaticus hepaticae facie, Park. 1216. 



Ranunculus capillaris, Gat. Fl. Mont. 102. 



Ranunculus heterophyllus, Jloffm. Germ. 197. 



Ranunculus diversifolius, Schrank. Fl. Bav. 103. 



fVater croiofoot. 



Ditches and ponds ; perennial ; May and June. 



VOL. II. S A 



