Potentilla norvegica

Linnaeus

Sp. Pl. 1: 499. 1753.

Common names: Norwegian or rough cinquefoil potentille de Norvège
Synonyms: Potentilla flexuosa Rafinesque P. labradorica Lehmann P. monspeliensis Linnaeus P. norvegica subsp. hirsuta (Michaux) Hylander P. norvegica var. hirsuta (Michaux) Lehmann P. norvegica var. labradorica (Lehmann) Fernald P. norvegica subsp. monspeliensis (Linnaeus) Ascherson & Graebner
Treatment appears in FNA Volume 9. Treatment on page 140. Mentioned on page 138, 141, 144, 191.

Stems ascending to erect, (0.5–) 2–5 (–9) dm, hairs at base ± stiff, tubercle-based, glands absent or sparse, inconspicuous. Leaves ternate, rarely palmate, 3–15 (–20) cm; petiole 1–6 (–10) cm, long hairs sparse to abundant, spreading to ascending, 1–2.5 (–3) mm, usually ± stiff, ± crisped hairs absent or sparse to common, glands absent or sparse, inconspicuous; leaflets 3 (–5), at tip of leaf axis, separate to ± overlapping, largest ones broadly oblanceolate or elliptic to obovate, 1–6 (–10) × 0.7–4 (–5) cm, distal (1/2–) 2/3–3/4+ of margin usually ± evenly incised 1/4–1/3 to midvein, teeth (3–) 4–8 (–15) per side, surfaces sparsely to moderately hairy, sometimes glabrate or abundantly hairy, glands mostly absent. Inflorescences 5–40+-flowered. Pedicels (0.2–) 0.5–2.5 (–3) cm. Flowers: epicalyx bractlets ± elliptic to narrowly ovate, (3–) 4–8 (–13) × 1.5–3 (–5) mm; hypanthium 4–7 mm diam.; sepals 5–8 mm, apex acute to obtuse; petals yellow, broadly obovate, (2–) 3–5 × 2–4 mm; stamens 15 or 20, filaments 0.7–2 mm, anthers 0.3–0.5 mm; carpels 60–150, styles 0.7–0.8 mm. Achenes tan to brown, 0.8–1.3 mm, usually strongly rugose, without a corky protuberance. 2n = 42, 56, 63, 70.


Phenology: Flowering summer.
Habitat: Moist meadows, stream banks, lakeshores, roadsides, grasslands, hardwood and conifer woodlands, tundra
Elevation: 300–2700 m

Distribution

V9 203-distribution-map.jpg

Greenland, St. Pierre and Miquelon, Alta., B.C., Man., N.B., Nfld. and Labr., N.W.T., N.S., Nunavut, Ont., P.E.I., Que., Sask., Yukon, Ala., Alaska, Ariz., Ark., Calif., Colo., Conn., Del., D.C., Ga., Idaho, Ill., Ind., Iowa, Kans., Ky., Maine, Md., Mass., Mich., Minn., Mo., Mont., Nebr., Nev., N.H., N.J., N.Mex., N.Y., N.C., N.Dak., Ohio, Okla., Oreg., Pa., R.I., S.C., S.Dak., Tenn., Tex., Utah, Vt., Va., Wash., W.Va., Wis., Wyo., Mexico, Central America, Eurasia, in South America, Pacific Islands (New Zealand)

Discussion

Potentilla norvegica is considered native in both North America and Eurasia, with the American race occasionally recognized as subsp. hirsuta for the stiff hairs on the stems, petioles, and pedicels of most plants in the flora area. This feature and other purported differences between the two races, in addition to being relatively subtle and inconstant, can be found in both America and Eurasia, though undoubtedly at least in part as introductions. Some populations in eastern Canada with glabrous stems have been distinguished as var. labradorica (for example, M. L. Fernald 1950), but such plants typically are intermixed with hairy individuals. The Löves (Á Löve 1954; Á Löve and D. Löve 1966) have argued that all three variants should be treated as distinct species due to chromosomal differences (hirsuta 2n = 56; labradorica 2n = 42; norvegica in the narrow sense 2n = 70) and obligate apomixis. Further research is needed to determine the taxonomic validity and rank of these expressions. If treated as species, P. flexuosa antedates P. labradorica (as noted by J. Soják 1969), while P. monspeliensis, although commonly used for the American race, is based on a European type (as summarized by A. Kurtto et al. in J. Jalas et al. 1972+, vol. 13).

An even greater challenge is determining native versus introduced ranges, especially given the likelihood that both native and Eurasian populations are widespread in North America. Achenes are produced prolifically and easily dispersed, to the extent that Potentilla norvegica is a contaminant in clover and hay fields and considered a weed at least in Canada (P. A. Werner and J. D. Soule 1976).

Selected References

None.

Lower Taxa

None.

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... more about "Potentilla norvegica"
70 +, 63 +, 56 +  and 42 +
tan +  and brown +
0.8mm +  and 1.3mm +
0.03 cm0.3 mm <br />3.0e-4 m <br /> (0.05 cm0.5 mm <br />5.0e-4 m <br />) +
acute;obtuse +
Barbara Ertter +  and James L. Reveal +
Linnaeus +
15 cm150 mm <br />0.15 m <br /> (25 cm250 mm <br />0.25 m <br />) +
3 cm30 mm <br />0.03 m <br /> (15 cm150 mm <br />0.15 m <br />) +
compound +  and simple +
opposite +  and alternate +
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 +
Norwegian or rough cinquefoil +  and potentille de Norvège +
Greenland +, St. Pierre and Miquelon +, Alta. +, B.C. +, Man. +, N.B. +, Nfld. and Labr. +, N.W.T. +, N.S. +, Nunavut +, Ont. +, P.E.I. +, Que. +, Sask. +, Yukon +, Ala. +, Alaska +, Ariz. +, Ark. +, Calif. +, Colo. +, Conn. +, Del. +, D.C. +, Ga. +, Idaho +, Ill. +, Ind. +, Iowa +, Kans. +, Ky. +, Maine +, Md. +, Mass. +, Mich. +, Minn. +, Mo. +, Mont. +, Nebr. +, Nev. +, N.H. +, N.J. +, N.Mex. +, N.Y. +, N.C. +, N.Dak. +, Ohio +, Okla. +, Oreg. +, Pa. +, R.I. +, S.C. +, S.Dak. +, Tenn. +, Tex. +, Utah +, Vt. +, Va. +, Wash. +, W.Va. +, Wis. +, Wyo. +, Mexico +, Central America +, Eurasia +, in South America +  and Pacific Islands (New Zealand) +
not +  and aggregated +
300–2700 m +
0.8 cm8 mm <br />0.008 m <br /> (1.3 cm13 mm <br />0.013 m <br />) +
0.3 cm3 mm <br />0.003 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
0.4 cm4 mm <br />0.004 m <br /> (0.8 cm8 mm <br />0.008 m <br />) +
less elliptic +  and narrowly ovate +
0.15 cm1.5 mm <br />0.0015 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
0.07 cm0.7 mm <br />7.0e-4 m <br /> (0.2 cm2 mm <br />0.002 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 />) +
inconspicuous +
sparse;sparse +
Moist meadows, stream banks, lakeshores, roadsides, grasslands, hardwood and conifer woodlands, tundra +
tubercle-based +
0.25 cm2.5 mm <br />0.0025 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
straight +
spreading +  and ascending +
sparse +  and common +
crisped +
0.1 cm1 mm <br />0.001 m <br /> (0.25 cm2.5 mm <br />0.0025 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 /> (0.7 cm7 mm <br />0.007 m <br />) +
0.5mm;2.5mm +
turbinate +, patelliform +  and cupulate +
crassinucellate +
palmate +  and ternate +
opposite +  and alternate +
15 cm150 mm <br />0.15 m <br /> (20 cm200 mm <br />0.2 m <br />) +
marcescent +
well-developed +
persistent +
cauline +  and basal +
reduced +
3 cm30 mm <br />0.03 m <br /> (15 cm150 mm <br />0.15 m <br />) +
separate +  and more or less overlapping +
6 cm60 mm <br />0.06 m <br /> (10 cm100 mm <br />0.1 m <br />) +
4 cm40 mm <br />0.04 m <br /> (5 cm50 mm <br />0.05 m <br />) +
1 cm10 mm <br />0.01 m <br /> (6 cm60 mm <br />0.06 m <br />) +
elliptic +  and obovate +
0.7 cm7 mm <br />0.007 m <br /> (?) +  and 4 cm40 mm <br />0.04 m <br /> (?) +
linear +  and oblanceolate +
palmate +  and pinnate +
inferior +  and superior +
clustered +, biseriate +  and superposed +
2.5 cm25 mm <br />0.025 m <br /> (3 cm30 mm <br />0.03 m <br />) +
0.5 cm5 mm <br />0.005 m <br /> (2.5 cm25 mm <br />0.025 m <br />) +
0.2 cm2 mm <br />0.002 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
0.1 cm1 mm <br />0.001 m <br /> (0.15 cm1.5 mm <br />0.0015 m <br />) +
free +  and distinct +
obovate +
0.15 cm1.5 mm <br />0.0015 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
0.2 cm2 mm <br />0.002 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
6 cm60 mm <br />0.06 m <br /> (10 cm100 mm <br />0.1 m <br />) +
1 cm10 mm <br />0.01 m <br /> (6 cm60 mm <br />0.06 m <br />) +
Flowering summer. +
adnate +, free +, connate +  and distinct +
often more or less longer +
not arillate +
persistent +
free +  and distinct +
erect +  and spreading +
lanceolate +  and broadly ovate or deltate +
0.5 cm5 mm <br />0.005 m <br /> (0.8 cm8 mm <br />0.008 m <br />) +
free +  and distinct +
not rooting +
reddish +  and green +
ascending +  and erect +
1 +  and many +
not flagelliform +
palmate +  and pinnate +
linear;ovate +
deciduous +
distinct +
subapical +
conic-tapered +
rough-thickened +
0.07 cm0.7 mm <br />7.0e-4 m <br /> (0.08 cm0.8 mm <br />8.0e-4 m <br />) +
hairy +  and glabrate +
Potentilla flexuosa +, P. labradorica +, P. monspeliensis +, P. norvegica subsp. hirsuta +, P. norvegica var. hirsuta +, P. norvegica var. labradorica +  and P. norvegica subsp. monspeliensis +
not fleshy-thickened +
Potentilla norvegica +
Potentilla sect. Rivales +
species +
4 (?) +  and 8 (?) +
inconspicuous +
enlarged +
not stoloniferous +  and 1-stemmed +
perennial +, short-lived +, biennial +  and annual +
biennial +, annual +  and perennial +
herb +  and matted +