162 MEMOIRS FROM THE DEPARTMENT OF BOTANY OF COLUMBIA UNIVERSITY 
Montana: Flodman & Rydberg, 1895; F. V. Hayden, No. 1380, 1854. 
Utah: Watson, No. 340, 1869. 
Newfoundland : coleman & Schrenk, No. 42, 1894. 
Greenland: Komerup ;* Hartz.* 
6. COMARUM L. 
Comarum L. Sp. Pl. 5602. 1753 
Pancovia Heist; Adans. Fam. 2: 294. 1763 
Potentilla Scopoli, Fl. Carn. Ed. 2, 359. In part. 1772. 
Argentina Lam. Fl. Frang. 3: 118. In part. 1778. 
Hypanthium almost flat, or slightly saucer-shaped, enlarging in fruit, more or less 
tinged with red. Bractlets, sepals and petals 5. Petals red, ovate, acuminate. Stamens 
20-25, inserted near the base of the receptacle; filaments filiform, but rather stout; an- 
thers flat, cordate at the base, attached by the back, and opening by longitudinal mar- 
ginal slits. Receptacle hemispherical, enlarging in fruit and becoming ellipsoid and 
spongy. Pistils numerous; style lateral, filiform. Seeds amphitropous. 
Only one species. 
xy. Comarum palustre L. 
Comarum Beene Le Spa klo025) Wise: 
L. Sp. Pl. Ed. 2, 718; Mueller, Fl. Dan. pi. 636; Mill, Gard. Dict. Ed. 8; Ait. Hort. 
Kewn 2) 219) Hdl 2.3. 282- Willd. Sp. Plv2e 11195 Persssyn.12* 98; Bom in Lam. 
Ene. Meth. Suppl. 2: 316; Don, Gard. Dict. 2: 562; Dietr. Syn. Plant. 3: 194. 
Michx. Fl. Bor. Am. 1: 302; Pursh, Fl. Am. Sept. 356; Bigelow, Fl. Bost. 123; 
Ed. 2: 203; Pl. Bost. 216; Nutt. Gen. 1: 311; Torr. & Gray, Fl. N. Am. 1: 447; Eat. 
Man. Has 2: 2102 Bd-3: 2455 Md) 5. 182) WdiG2 103° de .2535 Torre IN 
211; Eat. & Wr. N. Am. Bot. 204; Gray, Man. oe Newberry, Pac. R. R. Rep. 6: 71; 
Cooper, ibid. 12: Book 2, 56; Britt. & Brown, Il. Fl. 2: 217; Howell, Fl. N. W. 
Am. 1; 174: 
Richards. Frankl. Journ. 739; Ed. 2, Suppl. 12; Ledeb. Fl. Ross. 2: 62; Seem. 
Bot. Herald, 29; Hook. f. Arct. Pl. 290; Provancher, Fl. Can. 190. 
Potentilla palustris Scop. Fl. Carn. Ed. 2: 359. 1772. 
Lehm. Mon. Pot. 21 and 52; Sprengel, Syst. Veg. 2: 536; Lehm. Rev. Pot. 
Walp. Ann. 2: 483. 
Torr. Fl. U. S$. 498; Comp. 211; Gray, Man. Ed. 2: 119; Wd: 6: 55; Wood, Bot. 
& Fl. 107; Torr. Wilkes’ Exp. 290; Knowl. Proce. U. 5. Nee Mus. 1885: 215; Stejne- 
ger, ibid. 532; Wats. Proc. Am. Acad. 8: 560; Brew. & Wats. Bot. Cae Ths alsxt0)s 
FO. 
(95 
