Ranunculus. RANUNCULACEiE. 25 



no. 49, Gmel. Fl. Sibir. iv, t. 83, f. B), & R. Langsdorfii, DC. Prodr. i. 34. B.. pusUhis, Ledeb. 

 Mem. Acad. Petrop. v. 546, the depauperate high northern form. R. limosus, Nutt. in Torr. 

 & Gray, 1. c. 20. A', radicans, Kegel, Bull. Soc. Nat. Mosc. xxxiv. pt. 2, 44, 45, not of C. A. 

 Meyer & Ledeb. R. multijidus, var. repens, Wats. Bot. King. Exp. 8, & Bibl. Index, 20. R. 

 multljidus, var. limosus, Lawsou, Rev. Canad. Ranunc. 47. — Western arctic America to 

 Great Slave Lake, south to Michigan, Washington, and even New Mexico, Palmer ; also in 

 cold bogs of Nova Scotia, Trueman. 



-1— H— Terrestrial arctic or alpine perennials (or first species amphibious and less alpine), 

 creeping and wholly fibrous-rooting, either from procumbent stems or filiform rootstocks, 

 glabrous ; with rounded leaves palmately 3-5-lobed or parted but not divided nor filiform- 

 dissected : flowers small : akeues smooth. 



++ Stems leafy and rooting at the nodes : akenes small in a globular head : style short or 

 hardly any. 



R. natans, C. A. Meyer. Creeping extensively, rooting in wet mud or floating in shallow 

 water : leaves reniform or some with shallow sinus or truncate base, 4 to 9 lines in diameter, 

 ' with 3 to 5 roundish or obovate diverging lobes : petals about 2 lines long : carpels very 

 numerous in a globose head (of a quarter inch in diameter) with a thick fleshy receptacle : 

 style extremely short, with a terminal stigma. — Meyer in Ledeb. Ic. t. 114, Fl. Alt. ii. 315, 

 & Fl. Ross. i. 34. R. hyperboreus, var. natans, Regel, 1. c. 43 ; Gray, Proc. Acad. Philad. 1863, 

 56. R. radicans, C. A. Meyer in Ledeb. Ic. t. 116, is a form of the same. R. Purshii, 

 Torr. Ann. Lye. N. Y. ii. 1 62, not Richards. — Rocky Mountains of Colorado, subalpine or 

 lower. Hall & Harbour, James, Coulter, Rothrock, Patterson. (N. Asia.) 



R. hyperboreus, Rottb. Terrestrial in wet soil, small, depressed and creeping : leaves of 

 cuneate or flabelliform outline, rarely with subcordate base (2 to 6 lines broad), 3-lobed or 

 almost 3-parted : the lobes obovate or oblong, and the later ones sometimes 2-lobed : petals 

 a line long : carpels fewer in a small head with an oval receptacle : style very short. — Act. 

 Hafn. x. 458, t. 4, f. 16 (Fl. Dan. t. 331) ; DC. Syst. i. 272 ; Reichenb. Ic. PI. Crit. i. t. 11, 

 f. 21, 22 ; Torr. & Gray, Fl. i. 20. — Labrador, Allen, Bell, to arctic Alaska. (Arct. Asia 

 & Eu., Greenland.) 



++ ++ Scapose from filiform rootstocks : akenes rather few in a loose head with small 

 receptacle, long-styled. 



R. LapponicUS, L. Long flliform runners or rootstocks sending up long-petioled radical 

 leaves and simple leafless or one-leaved scapes a span high : leaves reniform in outline (an 

 inch in diameter), 3-parted ; divisions flabellate-cuneate, 3-7-lobed or crenate-incised : petals 

 3 lines long : akenes a line or more long, obliquely ovate, somewhat acute-margined, a little 

 longer than the slender introrsely stigmatose persistent style. — Spec. i. 553 (Fl. Lapp. t. 3, 

 f. 4) ; Wahl. Fl. Lapp. t. 8, f. 2 ; Fl. Dan. t. 2292.1 — Western part of arctic America, and 

 Rocky Mountains south to Lat. 54°.^ (N. Asia & Eu., Greenland, &c.) 



-t— H— -I— Uliginous or subaquatic, fibrous-rooted, glabrous or nearly .so, with leaves all 

 entire or merely denticulate or crenulate, petioled. 



-H- Akenes beakless or nearly so, dull; the style very short and deciduous or hardly 

 any : subannuals ; ours with erect or ascending usually weak stems, sometimes rooting 

 from the lower nodes, but hardly at all thereliy perennial : lowest leaves cordate or ovate 

 or oblong and long-petioled : upper lanceolate to linear. 



= Petals 1 to 3 or occasionally 5, not over a line long, pale yellow : stamens only 5 to 10. — 

 Casalea, St. Ilil. 



R. trachyspermus, En(;elm. Stems a span to 2 feet higli, seldom rooting, and plant 

 prol)ably purely annual: carpels somewhat orbicular, tumid-lenticular, narrowly margined, 

 and the faces minutely tubercnlose, only one third line long, crowded in a cylindraceous or 

 ol)long head with a narrow receptacle of 2 lines or so in length. — Engelm. in Gray, PI. 



1 Add sjai. Anemone nudicaulis, Gray, Bot. Gaz. xi.l7; see Britton, Ann. N. Y. Acad. Sci. 

 vi. 233. 



2 Also north shore of Lake Superior, at Sand Bay, J. C. Jones, and near Grand Marais, Minn., 

 Cheney, ace. to Coulter & Fislier, Bot. Gaz. xviii. 299. 



