MEMOIRS FROM THE DEPARTMENT OF BOTANY OF COLUMBIA UNIVERSITY 201 



pairs of leaflets, which are obovate, 1-2.5 cm. long, coarsely and doubly serrate. Stem 

 leaves smaller, 3-5-foliolate, with acute or acuminate leaflets. Flowers in a narrow cyme, 

 15-20 mm. in diameter. Hypanthium densely long-pilose, not glandular; bractlets 

 linear, or linear-lanceolate, usually less than half the length of the broadly ovate sepals. 

 Petals yellow, orbicular or broadly obovate, 12-15 mm. long, exceeding the sepals by 

 about a half Stamens 25. Style thickened and glandular. 



A very near relative of the preceding, differing practically in no respect from it 

 except in the larger flowers and perhaps in being slightly lower in habit. It grows in 

 wet meadows. 



Oregon : Siskiyou Mountains, near Ashland Butte, Thomas Howell, 1897, No. 686. 



g. Drymocallis glabrata. 



Illustrations: Plate 109, f. 1; fruiting hypanthium and calyx, /. 2; pistil, /. 3. 



Stems several from a branching caudex, sparingly pubescent with long, almost arach- 

 noid hairs, in age glabrous, not at all glandular or viscid, branched above, the branches 

 slender, divergent. Stipules obovate, entire or somewhat toothed. Basal leaves with 

 long slender petioles, thin, in age almost glabrous, with 3 or 4 pairs of leaflets, which are 

 obovate-cuneate, obtuse, entire at the base, the upper half coarsely toothed. Stem leaves 

 with 3-5 leaflets, short-petioled or subsessile. Flowers large, nearly 2 cm. in diameter, 

 in an open cyme with slender diverging branches. Hypanthium sparingly silky-villous, 

 in age almost glabrous ; bractlets linear-oblong, scarcely half as long as the broadly ovate 

 sepals. Petals light yellow, large, suborbicular, 12-15 mm. long, more than half longer 

 than the calyx. Stamens 25-30. Style thickened and glandular. 



It is perhaps nearest related to D. Ashlandica, but differs in the slender divergent 

 branches of the cyme and the pubescence, which is unusually sparse for the genus. It 

 grows on foothills. 



Washington: (EUensburg) A. D. E. Elmer, No. 412, 1897. 



10. Drymocallis Wrangelliana (Fisch. & AIL). 



PotentillaWrangelliana Fisch. & All. Anim. Bot. Ind. Sem. Hort. Bot. Petr. 1840 : 54. 



Linnaea, 15: 118; Ann. Sci. Nat. (II) 16: 57; Lehm. Rev. Pot. 49; Davy, Ery- 

 thea, 2: 166, 1894; Walp. Rep. 2: 35; Ann. 2: 476. 



f Potentilla rupestris Presl, Epim. Bot. 198. 1849 (fide Lehm.). 



Potentilla glandulosa Hook. & Arn. Bot. Beechey, Suppl. 338 (at least in part). 



Torr. Pac. R. R. Rep. 4: 84; Bot. Mex. Bound. 64; Gray Proc. Am. Acad. 8: 381; 

 Brew. & Wats. Bot. Cal. 1: 178; Wats. Proc. Am. Acad. 8 : 552 (in part); Behr, Fl. 



