- CLASS XIII. ORDER VI. 239 



mentose, sending out roots and leaves from the joints. Leaves 

 linear, compressed, fleshy, obtuse. Flowers solitary. Calyx 

 leaves roundish, obtuse, concave, spreading. Petals obovate, 

 emarginate. Scale of the nectary elevated, adnate at the sides, 

 forming a cavity underneath it. — Low grounds, Topsfield, Bart- 

 lett, New Hampshire. — June, July. — Perennial. 



Variety §. ovalis. Leaves oval and lanceolate. Petals from 

 five to eight. Sent from Danvers by Dr. Nichols. 



Ranunculus Cymbalaria. Ph. Sea Crowfoot. 



Stem sarmeiitose, leaves reniform-hearl shaped, 

 smooth, crenate ; petals spatiilate. 



Stem sarmentose, filiform, round, smooth, putting out roots 

 and shoots at the joints. Leaves radical, on long compressed 

 petioles, reniform, toothed or crenate, very smooth. Scape round, 

 two or three flowered, with spatulate, obtuse bractes. Calyx 

 leaves smooth, ovate, acute, yellowish, spreading, at length re- 

 flexed. Petals spatulate, bright yellow. Nectary a small pit 

 with its lower margin elevated. Fruit oblong. Seeds numerous, 

 unequally ovate and acute. — Salt marshes, Chelsea, Cambridge. 

 — Perennial. 



Ranunculus abortivus. L. Small Jlowcred Croufoot. 

 Radical leaves heart-shaped, crenate; stem leaves 

 ternate, angular; stem about three flowered. L. 



This species is easily distinguished by its small flowers, and 

 undivided, radical leaves. The leaves which grow from the root 

 are heart or kidney shaped, crenate, the largest ones sometimes 

 lobed. Stem leaves in threes or fives, at the base of each pe- 

 duncle, nearly sessile, the upper ones lanceolate. Stems erect, 

 smooth, few flowered. Flowers small, yellow. Calyx leaves 

 obtuse, concave, a little shorter than the petals. Petals yellow, 

 lance-ovate ; nectaries tubular and emarginate, or funnel-shaped 

 and obliquely truncate. Seeds in a globular head, roundish, flat, 

 tipt with the recurved style. — Woods. — May, June. — Perennial. 



Ranunculus sceleratus. L. Celery leaved Croicfoot. 

 Lower leaves palmate ; uppermost in finger Uke 

 divisions ; fruit oblong. 



