296 NORTH AMERICAN FLORA 
Calyx and leaves not glandular-atomiferous ; plant neither yellowish nor 
oe ribs of the leaves not prominent, except in nos. 32, 33, 
an 
Pubescence of the stem and petioles appressed. 
Leaflets narrowly oblanceolate, almost linear; 
angular. 
Bractlets equaling or exceeding the sepals in length. 
teeth ovate-tri- 
(Mexican 
species. ) a 
31. 
Bractlets 4%-% as long as the sepals. 
Leaflets oblanceolate to obovate. 
Leaflets strongly ribbed, rather firm, cut-toothed with lanceolate 
teeth. 
Stem densely grayish-strigose or pilose, stout. 
(United States species.) 
Stem-leaves few, 5-foliolate ; teeth usually curved outward. 32. 
Stem-leaves many, most of them 7- foliolate; teeth 
curved in. 33. 
Stem almost glabrous, slender, 31. 
Leaflets not strongly ribbed, thin ; stem almost glabrous, slender. 
Leaflets coarsely toothed. 
Leaflets obovate or oblanceolate, toothed to near the base. 
Stem erect or nearly so; pubescence of the leaves 
closely appressed. 
Leaflets elliptic-oblanceolate with short ovate teeth. 34. 
Leaflets obovate-oblanceolate with lanceolate teeth. 35. 
36. 
Stem decumbent-ascending ; pubescence of the leaves 
rather loose. 
Leaflets cuneate-obovate, the middle ones mostly toothed 
above the middle, entire at the base. 
Petals about 1 cm. long or more ; stem strigose ; leaves 
not glaucous. 
Petals less than 8 mm. long; stem nearly glabrous; 
leaves glaucous. 
Leaflets dissected at least halfway to the midrib. 
Leaves rather densely silky beneath. 
37. 
Stem slender; inflorescence open. 38 
Stem stout, strict ; inflorescence congested. 33. 
Leaves glabrous except the veins. 39, 
Pubescence of the stem and petioles spreading; leaflets loosely hairy, 
often slightly tomentose beneath. 
Leaflets of the basal leaves usually 7, oblanceolate, dentate-serrate. 
(Pacific species.) 
Stem erect, strict, 47 dm. high, leafy. 40. 
Stem decumbent or ascending, DA dm. high, few-leaved. 
Teeth of the leaflets many, janceolate ; bractlets linear-lance- ‘ 
olate. 1. 
Teeth of the leaflets few, ovate; bractlets oblong-lanceolate. 42. 
Leaflets of the basal leaves usually 5, crenate; stem-leaves 3-folio- 
late. (Mexican species.) 
Stem decumbent, 4-5 dm. high ; 
em. long; petioles short. 
Stem erect, 2-4 dm. high; leaflets of the basal leaves about 3 
cm. long; petioles long. 
leaflets of the basal leaves 5 
IX. PERMOLLES 
One species. 45. 
X. CANDIDAE 
Segments of the leaflets lanceolate, acute ; tomentum sparse. 
Segments of the leaflets oblong to linear, obtusish ; tomentum dense. 
Pubescence of the petioles and stems appressed. 
Leaves densely yellowish-silky above, snow-white tomentose and 
57. 
[VoLumE 22 
P. Townsendii, 
P. angustata.~ 
P. grosseserrata. 
P. rectiformis. 
P, angusiata. 
P. etomentosa.” 
£. jucunda. 
P. amadorensis’ 
P. macropetala. 
6. P. glaucophylia. 
. PB. Parishii. 
. P. rectiformis. 
. P. glabrata. 
P. dascia’ 
P. Hallii? 
P. lasia. 
43. P. oaxacana, 
44. P. Goldmani. 
P. permollis. 
P. viridescens. 
silky beneath. 46. P. candida. 
Leaves green and sparingly silky above. 
Leaves white-silky beneath. 47. P. Elmeri. 
Leaves tomentose beneath. 
Tomentum fine and dense; pedicels and hypanthium silky- 
strigose. 48. P. Pecten. 
Tomentum loose; pedicels and hypanthium villous-tomentose, 49. 
Pubescence of the petioles and stem spreading. 
Sepals lanceolate or ovate-lanceolate, acuminate; petals about 7 
mim. long. 50 
Sepals ovate, acute; petals about 4 mm. long. 51. 
XI. PECTINISECTAE 
Leaves green, finely silky beneath, slightly if at all tomentose. 52. 
Leaves white-tomentose beneath. 
Divisions of the leaflets scarcely revolute; petals 7-10 mm. long. 
Leaves loosely villous-tomentose above. 
Leaves appressed-silky above. 54. 
Divisions of the leaflets narrowly linear, revolute ; petals 5-7 mm. long. 55. 
53. 
P. subvillosa. 
. P. Bakeri. 
P. comosa. 
P. pectinisecta. 
P. longiloba, 
P, Blaschkeana. 
P. flabeliiformis. 
