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sheep cinquefoil

creeping cinquefoil, potentille rampante

Habit Plants rosetted to ± matted; taproots sometimes ± fleshy-thickened.
Stems

prostrate to ascending, (0.3–)0.8–2(–3.5) dm, lengths (1–)1.5–3 times basal leaves.

soon becoming prostrate, flagelliform, not branched, rooting at some nodes, 1.5–10+ dm.

Basal leaves

pinnate with distal leaflets ± distinct, (1.5–)2–10(–13) × 0.7–3.5(–5) cm;

petiole 0.5–3.5(–5) cm, straight hairs sparse to abundant, sometimes absent (var. decurrens), ± appressed to ascending, 1 mm, ± stiff, cottony hairs absent, glands sparse, often obscured;

primary lateral leaflets 3–6 per side (often with additional interspersed leaflets), on distal 1/2–2/3(–3/4) of leaf axis, ± separate to ± overlapping, largest ones narrowly cuneate-oblanceolate to ± obovate, (0.3–)0.5–2(–3.5) × (0.2–)0.3–0.8(–1) cm, distal 1/4 to whole margin unevenly to pinnately (at least distal leaflets of var. ovina) incised 1/2–3/4+ to midvein, ultimate teeth 2–9(–11), linear or oblong to ovate, 1–7(–9) × 1–2 mm, apical tufts 0.5–2 mm, surfaces green to grayish, not glaucous, straight hairs sparse to abundant (sparser adaxially), sometimes absent (except on margins), loosely appressed, 0.5–2 mm, ± stiff, cottony hairs absent, crisped hairs sometimes sparse to common, glands absent or inconspicuous.

persistent, usually palmate, 3–12(–30) cm;

petiole 2–10(–25) cm, long hairs sparse to abundant, tightly to loosely appressed, 0.5–1.5 mm, usually stiff, sometimes weak, glands absent;

leaflets (3–)5(–7), central oblanceolate to obovate, (0.5–)2–4(–7) × 0.3–1.5(–2.5) cm, distal ± 3/4 of margin incised 1/4–1/3 to midvein, teeth (3–)4–12 per side, surfaces similar, green, sparsely to moderately hairy.

Cauline leaves

1–2.

2–3(–4) proximal to 1st flowering node, usually well expanded at anthesis, usually palmate, 2–8(–20) cm;

petiole 0.5–6(–15) cm;

leaflets (3–)5, ± resembling those of basal leaves, apex rounded to obtuse.

Inflorescences

(1–)2–11(–20)-flowered, usually openly cymose.

solitary flowers at stolon nodes.

Pedicels

(0.8–)1–2(–4) cm, straight to ± recurved in fruit.

(2.5–)4–12(–15) cm.

Flowers

epicalyx bractlets linear-lanceolate to narrowly elliptic, sometimes doubled, 2–3.5(–5) × 1 mm;

hypanthium 3–5 mm diam.;

sepals 3.5–5.5(–7) mm, apex acute to obtuse;

petals 4–7(–8) × 3.5–8 mm;

filaments 1–2.5 mm, anthers 0.4–1 mm usually ± 1/2 as long as filaments;

carpels 10–20, styles 2–3 mm.

5(–10)-merous;

epicalyx bractlets elliptic or oblong to ovate, 4–10 × 1.5–3.5 mm, often much larger than sepals (especially in fruit);

hypanthium 4–7 mm diam.;

sepals (3–)5–7 mm, apex broadly acute to obtuse;

petals 7–9(–12) × 6–9(–11) mm, apex usually ± retuse;

stamens ca. 20, filaments (0.5–)1–2.5(–2.8) mm, anthers (1–)1.3–2 mm;

carpels 60–120, styles 0.6–1.3 mm.

Achenes

1.5–2 mm, smooth, not carunculate.

1.3–1.6 mm, ± rugose.

Rootstocks

erect, slender to stout, 2–6+ cm.

2n

= 28 (Eurasia).

Potentilla ovina

Potentilla reptans

Phenology Flowering late Apr–Aug.
Habitat Dry to moist lawns, roadsides, waste places, on non-acidic soil
Elevation 0–500 m (0–1600 ft)
Distribution
from FNA
CO; ID; MT; NV; OR; UT; WY; AB; BC
[WildflowerSearch map]
[BONAP county map]
from FNA
CA; CO; DC; FL; GA; IL; KY; LA; MA; MD; MI; MN; NJ; NY; OH; OR; PA; VA; WA; WI; NS; ON; QC; Europe; w Asia; n Africa; Atlantic Islands (Azores, Macaronesia) [Introduced in North America; introduced also in West Indies, Bermuda, South America, Africa (Ethiopia), Pacific Islands (New Zealand), Australia]
[BONAP county map]
Discussion

Varieties 2 (2 in the flora).

Potentilla ovina is here accepted as an implicit new name by J. M. Macoun for P. diversifolia var. pinnatisecta, in agreement with N. H. Holmgren (1997b). In contrast, B. C. Johnston (1980) considered the names heterotypic. Potentilla ovina has priority at the species rank over P. pinnatisecta by one month.

(Discussion copyrighted by Flora of North America; reprinted with permission.)

Potentilla reptans is becoming widely introduced in North America, though not fully naturalized in some of the states indicated here. It may be confused with P. canadensis and P. simplex, but, in addition to the characters highlighted in the key, P. reptans tends to have more crenately toothed leaves than the more sharply toothed leaves of the native species. The plant has a history of medicinal uses similar to that of P. erecta. The cultivated double-flowered form is sometimes found established in weedy places.

(Discussion copyrighted by Flora of North America; reprinted with permission.)

Key
1. Distal leaflets: ± whole margin pinnately incised 3/4+ to midvein, teeth 4–9(–11), linear, surfaces grayish, rarely green, hairs sparse to dense.
var. ovina
1. Distal leaflets: distal 1/4–1/2(–3/4) of margin unevenly to pinnately incised 1/2–2/3(–3/4) to midvein, teeth 2–5(–7), ovate to oblong, surfaces green, hairs absent (except on margins) or sparse.
var. decurrens
Source FNA vol. 9, p. 171. FNA vol. 9, p. 135.
Parent taxa Rosaceae > subfam. Rosoideae > tribe Potentilleae > Potentilla > sect. Multijugae Rosaceae > subfam. Rosoideae > tribe Potentilleae > Potentilla > sect. Potentilla
Sibling taxa
P. albiflora, P. ambigens, P. anachoretica, P. angelliae, P. anglica, P. anserina, P. arenosa, P. argentea, P. arizonica, P. basaltica, P. bicrenata, P. biennis, P. biflora, P. bimundorum, P. bipinnatifida, P. brevifolia, P. breweri, P. bruceae, P. brunnescens, P. canadensis, P. concinna, P. cottamii, P. crantzii, P. crebridens, P. crinita, P. cristae, P. demotica, P. drummondii, P. effusa, P. elegans, P. erecta, P. flabellifolia, P. fragiformis, P. furcata, P. glaucophylla, P. gracilis, P. grayi, P. hickmanii, P. hippiana, P. holmgrenii, P. hookeriana, P. hyparctica, P. inclinata, P. intermedia, P. jepsonii, P. johnstonii, P. lasiodonta, P. litoralis, P. macounii, P. millefolia, P. modesta, P. morefieldii, P. multijuga, P. multisecta, P. nana, P. newberryi, P. nivea, P. norvegica, P. paucijuga, P. pedersenii, P. pensylvanica, P. plattensis, P. pseudosericea, P. pulchella, P. pulcherrima, P. recta, P. reptans, P. rhyolitica, P. rimicola, P. rivalis, P. robbinsiana, P. rubella, P. rubricaulis, P. sanguinea, P. saximontana, P. sierrae-blancae, P. simplex, P. sterilis, P. stipularis, P. subgorodkovii, P. subjuga, P. subvahliana, P. subviscosa, P. supina, P. thurberi, P. thuringiaca, P. tikhomirovii, P. townsendii, P. uliginosa, P. uschakovii, P. vahliana, P. verna, P. versicolor, P. villosa, P. villosula, P. vulcanicola, P. wheeleri
P. albiflora, P. ambigens, P. anachoretica, P. angelliae, P. anglica, P. anserina, P. arenosa, P. argentea, P. arizonica, P. basaltica, P. bicrenata, P. biennis, P. biflora, P. bimundorum, P. bipinnatifida, P. brevifolia, P. breweri, P. bruceae, P. brunnescens, P. canadensis, P. concinna, P. cottamii, P. crantzii, P. crebridens, P. crinita, P. cristae, P. demotica, P. drummondii, P. effusa, P. elegans, P. erecta, P. flabellifolia, P. fragiformis, P. furcata, P. glaucophylla, P. gracilis, P. grayi, P. hickmanii, P. hippiana, P. holmgrenii, P. hookeriana, P. hyparctica, P. inclinata, P. intermedia, P. jepsonii, P. johnstonii, P. lasiodonta, P. litoralis, P. macounii, P. millefolia, P. modesta, P. morefieldii, P. multijuga, P. multisecta, P. nana, P. newberryi, P. nivea, P. norvegica, P. ovina, P. paucijuga, P. pedersenii, P. pensylvanica, P. plattensis, P. pseudosericea, P. pulchella, P. pulcherrima, P. recta, P. rhyolitica, P. rimicola, P. rivalis, P. robbinsiana, P. rubella, P. rubricaulis, P. sanguinea, P. saximontana, P. sierrae-blancae, P. simplex, P. sterilis, P. stipularis, P. subgorodkovii, P. subjuga, P. subvahliana, P. subviscosa, P. supina, P. thurberi, P. thuringiaca, P. tikhomirovii, P. townsendii, P. uliginosa, P. uschakovii, P. vahliana, P. verna, P. versicolor, P. villosa, P. villosula, P. vulcanicola, P. wheeleri
Subordinate taxa
P. ovina var. decurrens, P. ovina var. ovina
Synonyms P. diversifolia var. pinnatisecta, P. pinnatisecta, P. plattensis var. pinnatisecta
Name authority J. M. Macoun: Canad. Rec. Sci. 6: 464. (1896) Linnaeus: Sp. Pl. 1: 499. (1753)
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