368 NORTH AMERICAN FLORA (Volume 22. 
Petals 4-5 mm. long, oval, pale-yellow. 18. D. amplifolia, 
Leaflets incised with lanceolate teeth. 19. D. incisa. 
Sepals oval or broadly ovate, rarely lanceolate, rounded and mucronate 
at the apex. 
Petals 7-8 mm. long, ascending in anthesis; leaves densely hairy ; 
plant stout. 1. D. agrimonioides, = acnw 
Petals less than 6 mm. long, spreading or reflexed in anthesis. 
Leaflets rounded-obovate ; plant conspicuously viscid. . 
Petals 4-6 mm. long; calyx and hypanthium in fruit together 
10-12 mm. long ; petioles conspicuously long-hairy. 
Pedicels very short, often almost none ; those of the earlier 
flowers seldom over 5 mm. long even in fruit; petals . ; 
ochroleucous ; inflorescence very leafy. 20. D. Wrangeiliana. -* 5. 
Pedicels longer, those of the earlier flowers in fruit 1-2 cm. 
long; petals yellow; inflorescence less conspicuously 
leafy. 21. D. oregana. 
Petals 2-4 mm. long ; calyx and hypanthium in fruit together 
6-10 mm. long; petioles mostiy short-hairy. 
Bractlets ovate or oval ; inflorescence with slender branches ; : : 
leaflets simple-toothed. 22. D. laxiflora, -ve' 
Bractlets linear, lanceolate, or oblong; inflorescence with 
short branches ; teeth mostly double. 
Petals obovate ; sepals twice as long as broad. a 
. viscida, 70. 
Petals yellow ; bractlets lanceolate or oblong. 23. D 2 
Petals whitish ; bractlets linear-lanceolate. 24. D, albida. up. 
Petals orbicular or nearly so, white; sepals half longer 
than broad. 25. D. micropetala, * 
Leaflets rhombic-obovate, at least the terminal one. 
Plant scarcely viscid, slender ; leaflets small. 26. D. reflexa. © 
Plant viscid-villous with long hairs, tall; leaflets ample. 18, D. ampiifolia. - 
Styles filiform or nearly so, more than twice as long as the ovaries. 
Plant about 2 dm, high; petals much exceeding the sepals; leaflets ; 
rhonbic-obovate. 27. D. rhomboidea. 
Plant 4-6 dm. high ; petals about equaling the sepals ; leaflets cuneate 
or cuneate-flabelliform. 28. D. cuneata, 
1. Drymocallis agrimonioides (Pursh) Rydberg. 
Geum agrimonioides Pursh, Fi. Am. Sept. 351. 1814. 
-Potentilla arguta Pursh, Fl. Am. Sept. 736. 1814. 
Bootia sylvestris Bigel. F1. Bost. ed. 2. 206. 1824. 
Potentilla confertifiora Torr. Fl. U. S. 499. 1824. 
Potentilla pennsylvanica arguia Torr. Ann. Lyc. N. ¥Y.2: 197. 1827. 
Potentilla obligua Dougl.; Hook. Fl. Bor. Am. 1: 186, assynonym. 1832. 
Potentilla ferruginea Dougl.; Hook. Fl. Bor. Am. 1: 186, as synonym. 1832. Not P. ferruginea 
Paxton. 1838. 
Bootia cymosa Raf. Aut. Bot. 169. 1840. 
Potentilla Bigeloviana Wender. Ind. Sem. Hort. Marb. 1841; Linnaea 16: Litt.-Ber. 112. 1842. 
Potentilla glutinosa Pursh; Lehm. Stirp. Pug. 9: 39, assynonym. 1851. 
Geum glutinosum Pursh; Lehm. Stirp. Pug. 9: 39, asasynonym. 1851. 
Potentilla arguta ferruginea Lehm. Rev. Potent. 50. 1856. 
Potentilla agrimonioides Farwell, Asa Gray Bull.3: 7. 1895. Not P. agrimonioides Bieb. 1808. 
Polentilla agrimoniotdes arguia Farwell, Asa Gray Bull. 3: 7. 1895. 
Drymocallis arguia Rydb. Mem. Dep. Bot. Columbia Univ. 2: 192. 1898. 
Stem stout and erect, 3-10 dm. high, striate, generally densely glandular- or viscid- 
hirsute with spreading hairs, generally simple below, branched above, with very short 
nearly upright branches; lower stipules ovate-lanceolate, submembranous and subentire, 
the upper broadly ovate and coarsely dentate or entire ; basal leaves many, with petioles 
5-20 cm. long, pinnate; leaflets 7-11, strongly veined, densely pubescent on both sides 
with appressed hairs, or those on the veins spreading ; upper three leaflets larger than the 
others, 2-10 cm. (usually 4-5 cm.) long, doubly serrate, the odd one commonly rhomboid, 
the others usually obliquely ovate, the lower pairs gradually diminishing downward ; stem- 
leaves similar but smaller, with short petioles and fewer leaflets; flowers in a crowded 
dense strict cyme, 12-18 mm. in diameter; hypanthium glandular-viscid, in fruit enlarged ; 
bractlets lanceolate, much smaller than the oblong-ovate, acute or mucronate sepals; petals 
broadly obovate or nearly orbicular, white or ochroleucous, in drying turning yellow, a 
little longer than the sepals; stamens 25-30, most commonly 30; anthers flat, slightly cor- 
date atthe base; pistils numerous; achenes smooth; styles basal or nearly so, fusiform. 
TYPE LOCALITY : On the rocky banks of the Susquehanna, Pennsylvania. 
DISTRIBUTION : Meadows and rocky places, New Brunswick to the District of Columbia, Col- 
orado, and the Mackenzie, as far north as Fort Simpson. 
ILLusTRations: Hook. Fl. Bor. Am. f/. 67; Bot. Reg. 16: fi. 1979; Britt. & Brown, Ill. 
Fl, f 1913 ; Mem. Dep. Bot. Columbia Univ. 2: £/. 102. 
