MEMOIRS FEOM THE DEPARTMENT OF BOTANY OF COLUMBIA UNIVERSITY 163 



Wats. & Coult. in Gray, Man. Ed. 6: 160 ; Greene, Fl. Fran. 1 : 63 ; Coville, Cont. U. S. 

 Nat. Herb. 3: 339; Holz. ibid. 223; Bailey, in Gray, F..F. & G. Bot. Rev. Ed. 1.52. 



Lehm. in Hook. Fl. Bor. Am. 1: 187; Schlecht. Linnaea, 10: 98; E. Meyer, PL 

 Lab. 77; Macoun, Cat. Can. PI. 140; Lange, Consp. Fl. Groen. 3 and 234; Rosen vinge, 

 ibid. 654. 



Argentina rubra Lam. Fl. Fran. 3: 120. 1778. 



Potentilla Comarum Nestler, Mon. Pot. 24 and 36. 1814. 



Ser. in DC. Prod. 2 : 583 ; Cham. Linnaea, 2 : 25 ; Bong. Veg. Ins. Sitcha, 132 ; 

 Beck, Bot. 108; Ed. 2, 100. 



Potentilla rubra Haller f. in Ser. Mus. Helv. 1: 56*. Not Willd. 



Fragaria pahtstris <Jrsintz, Stirp. Aust. fasc. 2: 11*. 



Comarum rubrum Gilib. Fl. Lith. 5 : 256* 



Fragaria pinnatifolia Stokes, Bot. Mat. Med. 3: 149. 



Illustrations: Fl. Dan. 4: pi. 636; Svensk. Bot. pi. 310; Engl. Bot. 3: pi. 172; 

 Schkubr, Handb. 2,: pi. 138; Dietr. Fl. Boruss. 12: pi. 8U*; Thome, Fl. Deutschl. 4: 

 pi. 409; Baxter, Brit. Phan. Bot. 3: pi. 197; Britt. & Brown, 111. Fl. 2: 1937. Plate 

 99,/. 1-2; dissection of flower,/. 3; section of receptacle in fruit, /. 4; stamen,/. 5; 

 young pistil, /. 6; mature pistil, /. 7. 



Perennial with a creeping rootstock; stem ascending, 2-5 dm. high, subglabrous or 

 appressed-strigose, somewhat striate, brownish or reddish in color and shining, the 

 lower stipules brown, scarious and wholly adnate to the petiole, the upper also adnate but 

 with free tips, lanceolate or ovate and foliaceous. Basal leaves with petioles about 1 dm. 

 long, the upper subsessile, all pinnate with two or three pairs of more or less approxi- 

 mate leaflets, minutely silky-strigose, shining, green above, paler and purple-veined 

 beneath ; leaflets oblong, oblanceolate, or even obovate, sharply serrate. Cyme leafy. 

 Hypanthium and calyx in flower scarcely 1 cm. in diameter, in fruit over 2 cm., silky- 

 strigose. Petals, stamens, styles and the inner side of the sepals dark purple. Bractlets 

 narrowly lanceolate, scarcely half as long as the broadly ovate acuminate sepals. Petals 

 ovate, acuminate or acute, scarcely half as long as the sepals. Stamens 20-25. 



Comarura palustre grows in cold wet places, especially sphagnum bogs, and extends 

 in America from Greenland to New Jersey, northern Illinois, Montana, northern Cali- 

 fornia and Alaska. It is also found in northern Europe and Asia. 



Comarum palustre villosum Pers. 



Comarum palustre villosum, Pers. Syn. 2: 58, 1807. 



Potentilla palustris villosa Walp. Ann. 2: 483; Lehm. Rev. Pot. 74; Lange, Consp. 

 Fl. Groenl. 3. 



