A80 
Springs, altitude 1,000 m., July 27. Younger specimens from Little Elk Canyon, 
altitude 1,100 m., June 29, have sonfewhat larger and thinner leaves (No. 491). 
Batrachium divaricatum (Schrank) Wimm. Fl. Schles, 10 (1841); Ranuneulus divari- 
catus Schrank, Baier. Il. ii, 104 (1789). 
The specimens resemble those of my Nebraska collections, except that the pedun- 
cles are much shorter. 
In brooks: Beaver Creek, near Buttalo Gap, altitude 975 m., June 21; Rapid Creek, 
above Rapid City, altitude 1,000 m., June 25; Elk Creek, altitude 1,100 m., June 28 
(No, 492). 
Cyrtorhyncha cymbalaria (Pursh) Britton, Mem. Torr, Club, v, 161 (1894); Ran- 
unculus cymbalaria Pursh, Fl. i, 392 (1814).! 
Around springs; common: Hot Springs, altitude 1,050 m., June LO (No, 493), 
Ranunculus cardiophyllus Hook. I'l. Bor. Amer. i, 14 (1829). 
This is not included in Coulter’s Manual. The range is hence extended westward. 
The petals in my specimen are broadly ovate, large, bright yellow, the sepals very 
pubescent. 
Custer, altitude 1,625 m., June 4; Rochford, altitude 1,600 m., July 11 (No. 494). 
Ranunculus ovalis Raf. Proc. Dec. 36 (1814). 
Not uncommon in shady places: Custer, altitude 1,625 m., May 28. Some speci- 
mens resemble somewhat the preceding species in size and habit, but the petals are 
oblong-rhombie (No. 495). 
Ranunculus abortivus L. Sp. Pl. i, 551 (1753). 
All specimens collected in the Hills are very slender and with thin leaves. This is 
especially the case with those from Elk Canyon, altitude 1,200 m., June 29 (No, 496), 
Those from Runkels, altitude 1,300 m., June 29 (No, 497), are more stout and approach 
the ordinary form, 
Ranunculus sceleratus L. Sp. Pl. i, 551 (1753). 
In and near streams: Piedmont, altitude 1,000 m., June 27; Elk Creek, altitude 
1,200 m., June 29; Rochford, altitude 1,600 m., July 11 (No. 498). 
Ranunculus pennsylvanicus L. f. Suppl. 272 (1781). 
Wet places; common: Lead City, altitude 1,500 m., July 6; Custer, altitude 1,650 
m., July 15 (No. 499). 
Ranunculus macounii Britton, Trans. N. Y. Acad. xii, 3 (1892). 
Hooker, in the Flora Boreali-Americana, describes his R, hispidus as being erect. 
Dr. Britton, loc. cit., says: 
“This is a spreading or trailing species, not stoloniferous as far as I know.” As 
far as Ican judge, there are two forms of this species; one, generally ascending, but 
sometimes erect, sometimes even spreading, the other widely trailing and stolonifer- 
ous, All the specimens from the Black Hills were of the former character, and may 
be regarded as the typical [. macounii, as they answer best the description of 
R. hispidus Hooker, on which R&R. macounii was based, 
Very common throughout the Black Hills: Hot Springs. altitude 1,050 m., June 15; 
Hermosa, altitude 1,050 m., June 23; Lead City, altitude 1,500 m,, July 6 (No. 500). 
Aquilegia canadensis L. Sp. Pl. i, 533 (1753). 
Common: Rapid City, altitude 1,000 m., June 25; Little Elk Canyon, altitude 
1,100 m., June 28; Rochford, altitude 1,600 m., July 11 (No. 501), 
Aquilegia canadensis formosa (lisch.) Cooper, Pac. R. Rep. xii, 55 (1860); Aqui- 
legia formosa Fisch. ; DC. Prodr. i, 50 (1824), 
This seems to grade into the preceding, from which it differs in the shorter spur 
and longer sepals, which are about twice the length of the petals. In my specimens 
the leaves are larger and more glaucous. 
Rare: Elk Canyon, altitude 1,200 m., June 29 (No. 502). 
‘See remarks on the synonomy of this species, this volume, p. 148 (1895). 
