RANUNCULACE^E. O 



4. R. aborti'vus, L. (SMALL-FLOWERED C.) Petals shorter 

 than the reflexed calyx. Stem erect, very smooth, slender. 

 Radical leaves roundish, crenate, petiolate ; stem-leaves 3-^5- 

 parted, sessile. Carpels in a globular head, each with a minute 

 curved beak. Shady hill-sides and wet pastures. 



5. R. scelera'tus, L. (CURSED C.) Petals about the same 

 length as the calyx. Stem thick, hollow, smooth. Radical 

 leaves 3-lobed ; stem-leaves 3-parted, uppermost almost sessile. 

 Head of carpels oblong. Wet ditches. 



6. R. recur va'tllS, Poir. (HOOKED C.) Petals shorter than 

 the reflexed calyx. Stem hirsute, with stiff spreading hairs. 

 Radical and cauline leaves about alike, long-petioled. Head of 

 carpels globular, each with a long recurved beak. Woods. 



7. R. Pennsylva'nicus, L. (BRISTLY C.) Petals not longer 

 than the calyx. Stem hirsute. Leaves ternately divided, divisions 

 of the leaves stalked, unequally 3-clef t. Head of carpels oblong, 

 with straight beaks, and so easily distinguished from No. 6. Wet 

 places. 



8. R. re'pens, L. (CREEPING C.) Petals much longer than 

 the calyx. Early-flowering stems ascending, putting forth long 

 runners during the summer. Leaves ternate, divisions generally 

 stalked, petioles hairy. Peduncles furrowed. Wet places. 



9. R. bulbo'sus, L. (BULBOUS C. BUTTERCUP.) Petals much 

 longer than the calyx. Stem erect, from a bulb-like base. Flow- 

 ers an inch broad, on furrowed peduncles. Pastures. Rather 

 rare. 



10. R. a'cris, L. (TALLC. BUTTERCUP.) Much taller than 

 No. 9. Petals much longer than the calyx. Stem upright, no 

 bulb at the base. Peduncles not furrowed. 



11. R. fascicula'ris, Muhl. (EARLY C.) Petals much longer 

 than the calyx. Plant 5-9 inches high, erect, pubescent with 

 silky hairs. Radical leaves appearing pinnate, the terminal 

 division long-stalked, the lateral ones sessile. Root a bundle oj 

 thickened fleshy Jibres. Rocky woods and fields in spring. 



6. CAI/THA, L. MARSH-MARIGOLD. 



C. palustris, L. (MARSH-MARIGOLD.) Stem about a foot 

 high, hollow, round, forking, very glabrous. Flowers golden 



