160 MEMOIRS FEOM THE DEPARTMENT OF BOTANY OF COLUMBIA UNIVERSITY 



Richardson, Frankl. 1st Journ. 739; Ed. 2: App. 20; Cham. Linnaea, 2 : 24 ; E. 

 Meyer, PL Lab. 76; Bongard, Veg. Ins. Sitcha, 132; Lehm.in Hook. Fl. Bor. Am. 1 : 189 ; 

 Schlecht. Linnaea, 10: 98: Hook. & Arn. in Beechey's Voy. 113, 123 and 338; Ledeb. 

 Fl. Ross. 2: 44; Seem. Bot. Herald, 29 and 52; Barnton, Cat. Can. PI. 8; Provancher, 

 Fl. Can. 189; J. Macoun, Syn. Fl. St. Lawr. (Can. Jour. 1877)4; Cat. Can. PL 141; 

 Lange, Consp. Fl. Groen. 5 and 234; Rosenvinge, 1. c. 654; Fowler, PL N. Bruns. 26; 

 Knowlton, Proc. U. S. Nat. Mus. 1885: 215; Steineger, 1. c. 532; Coville, Cont. U. S. 

 Nat. Herb. 3 : 338. 



Potentilla argentina Huds. Fl. Ang. 195. 1762. 



Gilib. Fl. Lith. 5: 254. 



Argentina vulgaris Lam. FL Fran. 3: 119. 1778. 



Dadylophyllum Anserina Spen. Fl. Frib. 3 : 1084. 



Fragaria Anserina Crantz, Stirp. Aust. fasc. 2:9*; Ed. 2, 71*- 



Lllustrations: Morr. Hist. 1^: pi. 20, f. 4; Sturm, Deutschl. Fl. 4: pi. 7* ; Eng. 

 Bot. 12: pi 861; FL Dan. 4: pi. 5U; Dietr. FL Boruss, 2: pi. H2f Heyne, Arzneijer, 

 4: pi. 31*; Thome, Fl. v. DeutschL 3: pi. 404; Sv. Bot pi. 152*; Curt. Lond. 3: pi. 3; 

 Schrank, Fl. Monac. 4 : pi. 386*; Dreves, Bot. Bilderb. 1 : pi. 35*; Britt. & Brown, 111. Fl. 

 2 : /. 1934. Plate 98, f. 1 ; dissection of flower, /. 2 ; stamen, /. 3 ; pistil, side view, /. 

 4; the same seen from above, /. 5; fruiting hypanthium and calyx,/. 6. 



Main stem almost none from perennial fascicled roots and producing numerous 

 long runners. Leaves 1-2 dm. long, abruptly pinnate with 9-31 larger leaflets and 

 smaller interposed, in the typical form spreading or flat on the ground, slightly silky 

 and green above, white-silky and tomentose beneath ; larger leaflets 1-3 cm. long, oblong, 

 oblanceolate or obovate, deeply and sharply serrate with lanceolate or triangular teeth. 

 Flowers 1-2.5 cm. in diameter, on pedicels 3-20 cm. long. Bractlets simple and lanceo- 

 late, or often broader, toothed or divided, generally a little longer than the broadly ovate 

 sepals. Petals elliptic, often twice as long as the sepals. Achenes numerous, very 

 thick and often grooved at the upper end. 



A. Anserina grows on moist ground in the arctic and colder temperate regions of the 

 northern hemisphere, extending in America from Greenland and Alaska to New Jersey 

 and Northern California and in the mountain regions to New Mexico and Arizona. 

 It has also been collected in Chile. 



Argentina Anserina concolor (Ser.). 

 Potentilla* Anserina concolor Ser. in DC. Prod. 2 : 582. 1825. 



Lange, Consp. Fl. Groen. 234; Don, Card. Diet. 2: 559; Lehm. Rev. Pot. 189; 

 Rydb. Bull. Torr. Bot. Club, 24: 12. 



