UANUNCULACEtE. 11 



R. bulbosus, Liu, Bn/hous Croivfoot. — e.b. 515. l.b.s.21. 



A. 17. C. 75. Lat. 5,0-58°. Alt. 0-500 yds. Tern. 52-42°. 



Root vertical, bulbous. Stems solitary or several, 4-10 inclies 

 high, erect, many-flowered, hairy or pubescent. Root-leaves on 

 long- petioles, ternate, the middle leaflet on a long jjetiole ; stem- 

 leaves on shorter petioles ; upper ones sessile, with linear entire 

 or piuuatifid segments and linear lobes. Peduncles grooved (fur- 

 rowed) . Calyx refiexed. Carpels glabrous, with a curved beak. 

 Receptacle slightly hairy. 



Meadows and pastures. Per. ; May-August. 



1 1 Carpels tuberculate or muricate. 



R. hirsutus. Curt. Rough Crowfoot. — e.b. 1504. l.b.s. 22. 



A. 16. C. 60. Lat. 50-57°. Alt. 0-200. Tern. 52-47°. 



Root annual. Stems numerous, 4-12 inches, spreading or 

 ascending, rarely erect, haiiy or downy, branching from the base. 

 Leaves hairy or downy, 3-parted, the middle portion on a long 

 petiole; segments of the upper leaves linear, entire or incised. 

 Calyx refiexed. Carpels compressed, tuberculate near the margin, 

 and surrounded with a thin border. Beak broad, slightly curved. 



Moist places, rare. Annual ; May-August. 



Var. R. parvulus, Lin. Plant dwarfish, with 1 or 2 flowers. 



R. parviflorus, Lin. Small -flowered Crowfoot. — e. b. 120. 

 L.B.S, 21. 



A. 11. C. 40. Lat. 50-55°. Alt. 0-200 yds. Tern. 52-48°. 



Stem 4-6 inches, spreading or ascending, pubescent. Leaves 

 3-5-cleft, with crenulate lobes. Peduncles short, smooth. Se- 

 pals reflexed, nearly as long as the petals. Petals narrow, some- 

 times wanting ; scale rudimentary or wanting. Carpels com- 

 pressed, furnished with long hooked tubercles {muricated) and 

 crowned with a broad beak. Receptacle glabrous. 



About hedges and fields, rare. Annual ; May-June. 



R. arvensis, Lin. Corn Crowfoot. — e.b. 135. l.b.s. 25, 

 A. 14. C. 50. Lat. 50-56°. Alt. 0-200 yds. Tern. 51-47°. 



Root annual. Stem usually solitary, erect, branched from the 

 base, pubescent or glabrous. Leaves glabrous or pubescent; the 

 radical ones ternate on long petioles, with elongate cuneate seg- 

 ments ; stem-leaves petioled, with long narrow segments, which 

 are either entire or incised; the upper ones sessile or nearly so, 

 uniform. Peduncles opposite to the leaves. Calyx erect or slightly 

 spreading. Petals yellowish green, small. Carpels 4-8, com- 



