Potentilla pulcherrima

Lehmann

Nov. Stirp. Pug. 2: 10. 1830.

Common names: Beautiful cinquefoil
Endemic
Synonyms: Potentilla filipes Rydberg P. gracilis var. filipes (Rydberg) B. Boivin P. gracilis var. pulcherrima (Lehmann) Fernald P. pulcherrima var. condensata Th. Wolf P. pulcherrima var. filipes (Rydberg) Th. Wolf P. pulcherrima var. wardii (Greene) Soják
Treatment appears in FNA Volume 9. Treatment on page 158. Mentioned on page 150, 151, 154, 155, 159, 162.

Glands usually conspicuous, red-tipped (palmate-leaved plants), sometimes absent or inconspicuous, colorless (subpalmate-leaved plants). Stems ascending to erect, (1.5–) 3–6 (–8) dm. Basal leaves sometimes 2-ranked, palmate to subpalmate, 3–25 (–35) cm; petiole 1–20 (–30) cm, long hairs sparse to abundant, appressed to spreading, 2–3 mm, weak to stiff, short hairs usually absent, crisped hairs absent or sparse, cottony hairs usually absent, glands sparse to abundant; leaflets 5–7, at tip or on distal 1/10 of leaf axis, separate to slightly overlapping, largest ones ± oblanceolate, 1–6 (–9) × 1–4 cm, margins flat, distal 2/3 to nearly whole length evenly incised 1/4–1/2 to midvein, undivided medial blade 6–15 mm wide, teeth 6–12 per side, ± broadly lanceolate, 1–5 mm, surfaces usually strongly dissimilar, abaxial grayish to white, long hairs sparse to common (mostly on veins), short hairs absent, cottony or crisped-cottony hairs abundant to dense, glands usually ± abundant (at least on veins), adaxial green, rarely grayish green, not glaucous, long hairs sparse to common, short, crisped, and cottony hairs usually absent, glands usually sparse to abundant. Cauline leaves 1–3. Inflorescences (4–) 10–50 (–60) -flowered. Pedicels 0.5–3 (–4.5) cm. Flowers: epicalyx bractlets narrowly lanceolate to narrowly elliptic, 3–5 (–6) × 0.8–2 mm, hairs sparse to common, ± appressed to spreading, glands absent or sparse to abundant; hypanthium (3–) 4–6 mm diam.; sepals 4–8 (–9) mm, apex acuminate; petals 6–9 (–11) × 6–13 mm; filaments 1–3.5 mm, anthers 0.8–1.1 mm; carpels 20–40, styles filiform to tapering above papillate-swollen base, (1–) 1.5–2 mm. Achenes 1.1–1.5 (–1.6) mm. 2n = 70, 71, 108.


Phenology: Flowering summer.
Habitat: Dry meadows in grasslands, sagebrush, scrub oak, aspen and conifer woodlands
Elevation: (300–)800–3600 m

Distribution

V9 231-distribution-map.jpg

Alta., B.C., Man., Ont., Que., Sask., Ariz., Calif., Colo., Conn., Idaho, Mont., Nev., N.Mex., N.Dak., S.Dak., Utah, Wyo.

Discussion

Potentilla pulcherrima is here retained provisionally in the broad sense, encompassing intergrades between morphological extremes. The most distinctive extreme has strictly palmate leaves and conspicuous red-tipped glands. Eglandular hairs are relatively sparse and spreading on epicalyx bractlets and abaxial leaflet veins, such that the veins tend to contrast with the cottony white abaxial surface. At the other extreme are plants with subpalmate leaves, no or inconspicuous glands, and densely strigose abaxial leaflet veins. The former is understood to be the core species, towards which the description is accordingly weighted. The latter in turn represents introgression with P. hippiana (sect. Leucophyllae) or other species. The subpalmate extreme includes the lectotype of P. pulcherrima (designated by J. Soják 1996), so if a narrower circumscription of the species is adopted then either P. filipes would become the accepted name of the core species or predominant current usage of P. pulcherrima would have to be conserved by designating a different type.

By whatever circumscription, Potentilla pulcherrima is one of the more common members of sect. Graciles in the Rocky Mountains, extending east into the northern prairies. The species grows mainly in the mountains from southeastern British Columbia and southern Alberta to northern and eastern Arizona and southern New Mexico. The native range extends at least to Manitoba and North Dakota, with outlying populations in the Black Hills of South Dakota. Populations are also scattered in the mountains of eastern Nevada and disjunctly in the White Mountains of California. Adventive occurrences in fields and disturbed sites are reported from as far east as Connecticut; see discussion of P. gracilis for reports from New Hampshire. All known specimens from Minnesota and Oregon have been reidentified as particularly hairy variants of P. gracilis in the broad sense; reports from Washington are suspect.

Potentilla pulcherrima has often been treated as a variety of P. gracilis, sometimes with the filipes extreme included in var. gracilis (B. Boivin 1967–1979). The current decision to treat P. pulcherrima as a species is in part because it has a monsoonal Rocky Mountain rather than a Pacific Northwest center of distribution.

Plants combining the vestiture of Potentilla pulcherrima, including abundant glandularity, with subpalmate leaves approaching P. hippiana (leaflets on about one-fifth of leaf axis) have been named P. gracilis var. hippianoides S. L. Welsh & N. D. Atwood.

Selected References

None.

Lower Taxa

None.

"dm" is not declared as a valid unit of measurement for this property.

... more about "Potentilla pulcherrima"
108 +, 71 +  and 70 +
stiff +  and weak +
grayish +  and white +
0.15 cm1.5 mm <br />0.0015 m <br /> (0.16 cm1.6 mm <br />0.0016 m <br />) +
1.1mm +  and 1.5mm +
grayish green +  and green +
stiff +  and weak +
0.08 cm0.8 mm <br />8.0e-4 m <br /> (0.11 cm1.1 mm <br />0.0011 m <br />) +
Barbara Ertter +  and James L. Reveal +
Lehmann +
separate +  and slightly overlapping +
6 cm60 mm <br />0.06 m <br /> (9 cm90 mm <br />0.09 m <br />) +
1 cm10 mm <br />0.01 m <br /> (6 cm60 mm <br />0.06 m <br />) +
1 cm10 mm <br />0.01 m <br /> (4 cm40 mm <br />0.04 m <br />) +
palmate +  and subpalmate +
25 cm250 mm <br />0.25 m <br /> (35 cm350 mm <br />0.35 m <br />) +
3 cm30 mm <br />0.03 m <br /> (25 cm250 mm <br />0.25 m <br />) +
papillate-swollen +
Graciles +
25 cm250 mm <br />0.25 m <br /> (30 cm300 mm <br />0.3 m <br />) +
less cordate or reniform +  and narrowly elliptic +
0.5 cm5 mm <br />0.005 m <br /> (25 cm250 mm <br />0.25 m <br />) +
coriaceous +
reduced +
free +  and distinct +
hairy +  and glabrous +
Beautiful cinquefoil +
Alta. +, B.C. +, Man. +, Ont. +, Que. +, Sask. +, Ariz. +, Calif. +, Colo. +, Conn. +, Idaho +, Mont. +, Nev. +, N.Mex. +, N.Dak. +, S.Dak. +, Utah +  and Wyo. +
not +  and aggregated +
(300–)800–3600 m +
0.5 cm5 mm <br />0.005 m <br /> (0.6 cm6 mm <br />0.006 m <br />) +
0.3 cm3 mm <br />0.003 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
narrowly lanceolate +  and narrowly elliptic +
0.08 cm0.8 mm <br />8.0e-4 m <br /> (0.2 cm2 mm <br />0.002 m <br />) +
0.1 cm1 mm <br />0.001 m <br /> (0.35 cm3.5 mm <br />0.0035 m <br />) +
0.8 cm8 mm <br />0.008 m <br /> (2 cm20 mm <br />0.02 m <br />) +
unisexual +  and bisexual +
not +  and aggregated +
deciduous +
on style scar +, hairy +  and glabrous +
0.05 cm0.5 mm <br />5.0e-4 m <br /> (0.26 cm2.6 mm <br />0.0026 m <br />) +
colorless +  and red-tipped +
inconspicuous +  and conspicuous +
Dry meadows in grasslands, sagebrush, scrub oak, aspen and conifer woodlands +
stoloniferous +  and short-rhizomatous +
blue-green +, green +  and grayish +
straight +
weak +  and stiff +
less appressed +  and spreading +
cottony +  and crisped-cottony +
sparse +  and common +
crisped +
0.2 cm2 mm <br />0.002 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
0.25 cm2.5 mm <br />0.0025 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
0.7 cm7 mm <br />0.007 m <br /> (1 cm10 mm <br />0.01 m <br />) +
0.4 cm4 mm <br />0.004 m <br /> (0.6 cm6 mm <br />0.006 m <br />) +
0.05 cm0.5 mm <br />5.0e-4 m <br /> (0.25 cm2.5 mm <br />0.0025 m <br />) +
0.2 cm2 mm <br />0.002 m <br /> (0.7 cm7 mm <br />0.007 m <br />) +
(4-)10-50(-60)-flowered +
crassinucellate +
bipinnate +, odd-pinnate +, subpalmate +, palmate +  and ternate +
opposite +  and alternate +
stiff +  and weak +
distal +  and up-to-distal +
marcescent +
well-developed +
persistent +
cauline +  and basal +
reduced +
narrowly oblanceolate +  and obovate elliptic oblong cuneate or flabellate +
linear +  and oblanceolate +
palmate +  and pinnate +
blue-green +, green +  and grayish +
stiff +  and weak +
1/4 +  and 1/2 +
0.6 cm6 mm <br />0.006 m <br /> (1.5 cm15 mm <br />0.015 m <br />) +
blue-green +, green +  and grayish +
stiff +  and weak +
inferior +  and superior +
clustered +, biseriate +  and superposed +
3 cm30 mm <br />0.03 m <br /> (4.5 cm45 mm <br />0.045 m <br />) +
0.5 cm5 mm <br />0.005 m <br /> (3 cm30 mm <br />0.03 m <br />) +
0.9 cm9 mm <br />0.009 m <br /> (1.1 cm11 mm <br />0.011 m <br />) +
1 cm10 mm <br />0.01 m <br /> (1.2 cm12 mm <br />0.012 m <br />) +
free +  and distinct +
0.6 cm6 mm <br />0.006 m <br /> (0.9 cm9 mm <br />0.009 m <br />) +
usually longer +
0.4 cm4 mm <br />0.004 m <br /> (1 cm10 mm <br />0.01 m <br />) +
0.6 cm6 mm <br />0.006 m <br /> (1.3 cm13 mm <br />0.013 m <br />) +
20 cm200 mm <br />0.2 m <br /> (30 cm300 mm <br />0.3 m <br />) +
1 cm10 mm <br />0.01 m <br /> (20 cm200 mm <br />0.2 m <br />) +
Flowering summer. +
adnate +, free +, connate +  and distinct +
subpinnate +, palmate +  and subpalmate +
not flagelliform +
2 cm20 mm <br />0.02 m <br /> (40 cm400 mm <br />0.4 m <br />) +
Nov. Stirp. Pug. +
not arillate +
0.8 cm8 mm <br />0.008 m <br /> (0.9 cm9 mm <br />0.009 m <br />) +
persistent +
free +  and distinct +
erect +  and spreading +
lanceolate +  and broadly ovate or deltate +
0.4 cm4 mm <br />0.004 m <br /> (0.8 cm8 mm <br />0.008 m <br />) +
stiff +  and weak +
free +  and distinct +
not rooting +
reddish +  and green +
(1.5-)2-4 times basal leaves +
ascending +  and erect +
1 +  and many +
not flagelliform +
palmate +  and pinnate +
linear;ovate +
0.1 cm1 mm <br />0.001 m <br /> (0.15 cm1.5 mm <br />0.0015 m <br />) +
deciduous +
distinct +
subapical +
filiform +  and tapering +
rough-thickened +
0.15 cm1.5 mm <br />0.0015 m <br /> (0.2 cm2 mm <br />0.002 m <br />) +
blue-green +, green +  and grayish +
stiff +  and weak +
incised +, flat +  and more or less revolute +
Potentilla filipes +, P. gracilis var. filipes +, P. gracilis var. pulcherrima +, P. pulcherrima var. condensata +, P. pulcherrima var. filipes +  and P. pulcherrima var. wardii +
not fleshy-thickened +
Potentilla pulcherrima +
Potentilla sect. Graciles +
species +
blue-green +, green +  and grayish +
stiff +  and weak +
6 +  and 12 +
lanceolate +
0.1 cm1 mm <br />0.001 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
inconspicuous +
enlarged +
biennial +, annual +  and perennial +
herb +  and matted +