» Ae 
Davis : RANUNCULI OF NORTH AMERICA. 465 
LL. Sepals spreading. 
40. acris; 41. McCallaz. 
KK. Akenes turgid or lenticular, marginless. 
L. Head of fruit oblong or cylindraceous. 
42. pedatifidus; 43. vicinalis; 44. 
Eschscholtzit; 45 extmtus ; 
46. saxicola. 
LL. Head of fruit globose or oval. 
47. Suksdorfit; 48. ovalis; 
49. Arédzonicus. 
II. Types from Old World, cultivated here, not 
naturaliged i 92.b5480 seeks ts te 50. montanus ; 
51. corthusefolius. 
III. Types found only in Mexico and southward 
(see also var. of 32). 
J. Plants with several slender scapose stems 
bearing only bracts and terminal flowers. 
52. longipedunculatus. 
JJ. Plants usually with true stems, 1 to 8 inches 
SoA a ae Bes «8 decd eh at he wtCtaine lage 53. Dontanus ; 
54. maulticaul’s; 55. Mexicanus. 
JJJ. Plants with true stems one foot high or 
HOLES  devindnoss 56. uncinatus; 57. petiolarts. 
HHH. Leaves all 2 to 4 times ternately parted or di- 
vided, divisions 1 line or less in width; flowers few, 
large; plants alpine or subalpine, low, decumbent 
Of spreading.......2-. 58. adoneus; 59. triternatus. 
HHHH. Leaves all palmately or pedately lobed or 
divided; sepals nearly equal to the petals; plants 
low, tufted, arctic or alpine. 
60. Grayl; 61. pygmaeus. 
HHHHH. Leaves, some of them, quite entire (ex- 
cept in 62); others with a few entire lobes; plants 
low and glabrous......62. oxynotus ; 63. digitatus ; 
64. glaberrimus. 
FF. Sepals densely clothed beneath with black or dark 
brown woolsi gis cide 65. Macauleyz; 66. nivalis. 
EE. Plants spreading by slender creeping stolons or root- 
stocks.......67. zatans ; 08. hyperboreus; 69. Lapponicus. 
DD. Plants aquatic or amphibious. 
70. delphintfolius ; 71. Purshit; 72. Missourtensis. 
CC. Flowers white (except in a double garden form of 73). 
73. aconttifolius; 74. Pallastz. 
BB. Leaves entire or only denticulate or crenulate, not lobed, from 
linear to oblong-lanceolate (or ovate in 75); plants varying from 
