328 NORTH AMERICAN FLORA LVOLUME 22 
thium, bractlets and sepals more or less glandular-granuliferous; hypanthium hirsute, 4-5 
mm. wide in fruit; bractlets 2.5-3 mm. long, lanceolate; sepals lanceolate, about 3 mm. 
long; petals 4-5 mm. long, cuneate, emarginate; stamens about 20; pistils 15-20; styles 
filiform. 
TYPE LOCALITY: Arizona. . : : ; 
DISTRIBUTION : Mountains of Arizona, southeastern California, and Chihuahua. 
92. Potentilla subviscosa Greene, Bull. Torrey Club 8: 97. 1881. 
Perennial, with a tap-root and short caudex; stems many from the caudex, prostrate 
_or spreading, sparingly hirsute and glanduliferous especially upward; stipules ovate- 
lanceolate, acute, entire; basal leaves numerous, digitately (or seldom closely pinnately) 
5-foliolate with the lower leaflets smallest; petioles 3-5 cm. long, sparingly hirsute, puber- 
ulent; stem-leaves reduced and ternate ; leaflets 1-4 cm. long, obovate or cuneate in outline, 
deeply cleft into oblong or linear-oblong divisions, and the middle one often 3-divided to 
near the midrib, hirsute on the veins, puberulent and more or less glanduliferous ; hypan- 
thium glanduliferous and puberulent, in age generally brownish and 5-7 mm. in diameter ; 
bractlets oblong-ovate, obtuse, 2-2.5 mm. long, shorter than the ovate, acute or obtuse 
sepals; petals cuneate or spatulate, about 5 mm. long and one half longer than the sepals; 
style short, glandular-thickened at the base; stamens 10; pistils about 15. 
TYPE LOCALITY : Mogollon Mountains, New Mexico. 
DISTRIBUTION : Mountains of Arizona, New Mexico, and northern Mexico. 
ILLUSTRATION: Mem. Dep. Bot. Columbia Univ. 2: 61. 16, f. 6-10. 
93. Potentilla ramulosa Rydb. Bull. Torrey Club 23: 430. 1896. 
Stems several from the thick perennial root, about 1 dm. high, scarcely exceeding the 
basal leaves, more or less hirsute, and branched ; stipules lanceolate, the lower scarious 
and brown, the upper herbaceous; basal leaves in age shining, with hirsute petioles 5-8 cm. 
long, finely pubescent; leaflets 5-7, obovate, coarsely and usually doubly toothed with 
somewhat divergent teeth, prominently veined beneath, the larger 5-7 cm. long; flowers 
slender-pedicelled in an.open cyme; hypanthium and pedicels hirsute and with numerous 
sessile glands; bractlets oblong, 3-4 mm. long, a little shorter than the oblong-ovate sepals, 
both distinctly veined, in fruit incurved and enclosing the rather few large achenes; petals 
obcordate, deeply emarginate and evidently contracted into a short claw, about 5 mm. long; 
stamens 15-20; pistils rather few ; achenes striate; styles filiform. 
‘TYPE LOCALITY : Arizona. 
DISTRIBUTION : Mountains of Arizona. 
ILLUSTRATIONS : Bull. Torrey Club 23: 1. 276; Mem. Dep. Bot. Columbia Univ. 2: pi. 17. 
XXI. Concinnae. Plants perennial, with a more or less thickened caudex; stems gen- 
erally several, low, spreading, or at last prostrate. Leaves digitately 5—7-foliolate, silky 
above, more or less tomentose or white-silky beneath. Cymes few-flowered. Petals yellow, 
broadly obovate to cuneate, truncate or emarginate, a little exceeding the sepals. Styles 
filiform but rather short. 
94. Potentilla fastigiata Nutt.; T. & G. Fl. N. Am. 1: 440. 1840. 
Potentilla holopetala fastigiata Lehm. Stirp. Pug. 9: 46. 1851. 
Potentilla gracilis fastigiaia S. Wats. Proc. Am. Acad. 8: 557. 1873. 
Potentilla candida Rydb. Bull. Torrey Club.2¢: 6, in part, 7. e. as to specimens cited. 1897. 
Perennial, witha short caudex; stem low, 1-3 dm. high, ascending, generally quite 
densely silky, rather simple; stipules ovate-lanceolate, often toothed, 0.5-1 cm. long: 
leaves on rather short petioles, digitate, with 5-7 leaflets, silky-villous with rather long hairs 
on both sides and slightly tomentose beneath ; petioles of the basal ones 2-5 cm. long, ap- 
pressed white-silky ; leaflets obovate, 1-3 cm. long, coarsely crenate or somewhat incised 
with broad rounded-ovate or oblong-ovate teeth; cyme usually rather dense; hypanthinm 
silky-villous, in fruit about 5-6 mm. in diameter; bractlets linear-lanceolate, shorter 
than the triangular-ovate acute sepals, which are about 5 mm. long; corolla 10-15 mm. in 
