48 LAWSOK : REVISION OP THE 



10. — Eanunculus reptans, Linnœus. 



Stem slender, arched-procumbeut, and rooting at the joints. Leaves linear, acute, 

 somewhat fleshy, glabrous, entire. Flowers solitary, terminal or at the joints, the flower 

 small, sepals spi-eading, obtuse. Petals small, obovate, yellow. Achenia smooth, with a 

 minute point. 



Rannnciihis reptans. Linn. Sp. PL, p. ÏTS. Fl. Dan., t. 108. Ait. f., Hort. Kew., ed. 2, 

 III, p. 351. Torr. & Gr., FL. I, p. 16. Gray, Man., ed. 1, p. 9. DC. Syst., I, p. 248. Lightf., 

 Fl. Scotica, fig. on title page. Withering, Arr. Br. Pits., II, p. 505. Lawson, Eanunc. Canad. 

 p. 40. Wood, CI. Bk. & Fl. p. 206. 



ii. filiformis. Michaux, FL, B. A., I, p. 320. Persoon, Synops., II, p. 102. Pursh, FL, 

 II, p. 392. 



R. reptam, var. ft. filiformis. DC. Syst. Nat., I, p. 248. 



R. Flammida, var. y. filiformis. Hook., Fl. B. A., I, p. 11. 



R. F/ammula, var. reptans. Smith, Eng. FL, III, p. 45, (1825). Meyer, PL, Lab., p. 96. 

 Gray, Man., ed. 5, p. 41. Wats. Bibl. Index, I, p. 18. Brewer & Wats., Bot. Calif., I, p. G. 



R. Flammida, sub-sj). reptans. Hook, f.. Student's Flora, p. 6. 



Islands in the St. Lawrence River, near Brockville and elsewhere on the northern 

 shores of the Upper St. Lawrence and Lake Ontario. — Lawson. N. to lat. 69'. — Richardson. 

 Nicolet, Montreal, Wolfe Island. — Dr. P. W. 3Iaclos^an. Dried up ponds near Fort Wel- 

 lington, Prescott, and banks of St. Lawrence River, west from Brockville.— 5. Billings jr. 

 Lake Winnipeg and Athabaska River, 31st July, 1862. — McTavish. Gravelly banks of 

 lakes and rivers. Nova Scotia and Coast Ranges of British Colirmbia ; Lake Winnipeg ; 

 sparingly amongst sand, east side of River Trent, below Heeley's Falls, Seymour, Ont. — 

 Macoun. Lake St. Charles.— Prow/wr/ie;-. Labrador, Newfoundland, Iceland and Greenland. 



This form is well known in northern Europe, and extends to Kamtschatka, but is not 

 very common. Our Canadian plant agrees perfectly with Scotch specimens (from Loch 

 Leven) and Norwegian ones collected on the Dovrefeldt, 3,500 feet. Large specimens from 

 Braemar, Scotland, have narrowly lanceolate leaves, apparently connecting this with 

 Flammula. In Canada it appears to be permanently distinct. 



11. — RANUNCtlLUS KEPTANS, var. ft. INTEEMEDIUS. 



Leaves ilarrowly lanceolate, the upper ones linear, entire. 



R. Flammula, var. intermedia. Hook., Fl. Bor.-Am., I., p. 11. Gray. Man., ed. 5, p. 41. 

 R. Flammida. Srhlechtendal, in Linnœa., VI., p. 57*7. 



Shore of Lake Ontario at Presqu'île Point, and on Toronto Island. — Maroitn. South 

 Greenland. — Hook. /., Arct. PL 



12. — Ranunculus ambic4Ens, Watson. 



Stem more or less erect from a reclining base, with adventitious roots from the lower 

 joints. Leaves ovate-lanceolate or linear-lanceolate, narrowed at the base into short 

 sheathing petioles, usually glabrous and entire or slightly toothed. Carpels small, with 

 a subulate beak. Petals much longer than the calvx. 



