Potentilla anglica

Laicharding

Veg. Europ. 1: 475. 1790.

Common names: English or wood cinquefoil trailing tormentil potentille d'Angleterre
Introduced
Treatment appears in FNA Volume 9. Treatment on page 135. Mentioned on page 133.

Rootstocks ± erect, stout to slender, 1–4 cm. Stems soon becoming prostrate, ± flagelliform, usually openly branched, eventually rooting at some nodes, (0.3–) 1.5–7+ dm. Basal leaves ± persistent, ternate or palmate, 2–10 (–12) cm; petiole 1–7 (–8) cm, long hairs sparse to abundant, appressed, 0.5–1 mm, stiff, glands absent; leaflets 3–5, central ± obovate to cuneate, 1–3 (–3.5) × 0.8–2 (–2.5) cm, distal ± 1/2 of margin incised 1/4–1/3 (–1/2) to midvein, teeth 2–4 per side, surfaces similar, green, sparsely to moderately hairy. Cauline leaves 2–3 (–4) proximal to 1st flowering or branching node, usually well expanded at anthesis, usually ternate, 2–6 (–10) cm; petiole 0.3–4 (–8) cm; leaflets (3–) 5, ± resembling or narrower than those of basal leaves, narrowly cuneate, 1–2 (–3.5) × 0.8–2 (–2.5) cm, apex rounded to obtuse. Inflorescences solitary flowers at stolon nodes. Pedicels (1–) 3–10 (–17) cm. Flowers 4 (–5) -merous; epicalyx bractlets narrowly elliptic to oblong or ovate, 3–4 (–7) × 1–1.5 mm, smaller than to slightly larger than sepals; hypanthium 2–4 mm diam.; sepals (3–) 4–6 mm, apex broadly acute or acuminate; petals 6–9 × 5–9 mm, apex ± retuse; stamens 15–20, filaments 0.8–1.2 mm, anthers 0.8–1.2 mm; carpels 20–50, styles 0.9–1.5 mm. Achenes 1–1.5 (–1.8) mm, ± smooth. 2n = 28, 56 (Europe).


Phenology: Flowering May–Aug(–Nov).
Habitat: Moist flats and slopes, mainly on acidic soil
Elevation: 0–1200 m

Distribution

V9 194-distribution-map.jpg

Introduced; St. Pierre and Miquelon, B.C., Nfld. and Labr., N.S., Que., Calif., Colo., Maine, N.Y., Oreg., Pa., Utah, Wash., Europe, also in Atlantic Islands (Azores), also in Atlantic Islands (Madeira), Pacific Islands (New Zealand), Australia

Discussion

Potentilla anglica apparently is a product of hybridization involving P. erecta and P. reptans (B. Matfield and J. R. Ellis 1972) that has become stabilized and distinct from both parents. In Europe, it forms back-cross hybrids with both P. erecta (P. ×suberecta Zimmeter) and P. reptans (P. ×mixta Nolte); these hybrids are not known from North America. A garden hybrid supposedly between P. anglica and P. nepalensis Hooker (known as P. ×tonguei Mallett) was found in Allegany State Park, New York, but this was likely cultivated rather than naturalized.

Potentilla anglica probably was introduced even in Newfoundland (A. Kurtto et al. in J. Jalas et al. 1972+, vol. 13), contrary to the view expressed by M. L. Fernald (1950).

The name Potentilla procumbens Sibthorp was previously used for this species; that is a superfluous and illegitimate name.

Selected References

None.

Lower Taxa

None.

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

... more about "Potentilla anglica"
silvery white +  and green +
0.15 cm1.5 mm <br />0.0015 m <br /> (0.18 cm1.8 mm <br />0.0018 m <br />) +
rugose +  and smooth +
1mm +  and 1.5mm +
0.08 cm0.8 mm <br />8.0e-4 m <br /> (0.12 cm1.2 mm <br />0.0012 m <br />) +
Barbara Ertter +  and James L. Reveal +
Laicharding +
palmate +  and ternate +
opposite +  and alternate +
10 cm100 mm <br />0.1 m <br /> (12 cm120 mm <br />0.12 m <br />) +
2 cm20 mm <br />0.02 m <br /> (10 cm100 mm <br />0.1 m <br />) +
ephemeral +  and persistent +
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 />) +
reduced +
free +  and distinct +
hairy +  and glabrous +
3 cm30 mm <br />0.03 m <br /> (3.5 cm35 mm <br />0.035 m <br />) +
2 cm20 mm <br />0.02 m <br /> (2.5 cm25 mm <br />0.025 m <br />) +
1 cm10 mm <br />0.01 m <br /> (3 cm30 mm <br />0.03 m <br />) +
less obovate +  and cuneate +
0.8 cm8 mm <br />0.008 m <br /> (2 cm20 mm <br />0.02 m <br />) +
English or wood cinquefoil +, trailing tormentil +  and potentille d'Angleterre +
St. Pierre and Miquelon +, B.C. +, Nfld. and Labr. +, N.S. +, Que. +, Calif. +, Colo. +, Maine +, N.Y. +, Oreg. +, Pa. +, Utah +, Wash. +, Europe +, also in Atlantic Islands (Azores) +, also in Atlantic Islands (Madeira) +, Pacific Islands (New Zealand) +  and Australia +
not +  and aggregated +
0–1200 m +
0.4 cm4 mm <br />0.004 m <br /> (0.7 cm7 mm <br />0.007 m <br />) +
0.3 cm3 mm <br />0.003 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
narrowly elliptic +  and oblong or ovate +
0.1 cm1 mm <br />0.001 m <br /> (0.15 cm1.5 mm <br />0.0015 m <br />) +
0.08 cm0.8 mm <br />8.0e-4 m <br /> (0.12 cm1.2 mm <br />0.0012 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 />) +
Moist flats and slopes, mainly on acidic soil +
stoloniferous +  and short-rhizomatous +
straight +
appressed +  and spreading +
sparse +  and abundant +
crisped +
0.05 cm0.5 mm <br />5.0e-4 m <br /> (0.1 cm1 mm <br />0.001 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 />) +
0.2 cm2 mm <br />0.002 m <br /> (0.4 cm4 mm <br />0.004 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 />) +
racemiform open +  and more or less congested +
crassinucellate +
bipinnate +, odd-pinnate +, subpalmate +, palmate +  and ternate +
opposite +  and alternate +
marcescent +
well-developed +
persistent +
cauline +  and basal +
reduced +
separate +  and slightly overlapping +
2 cm20 mm <br />0.02 m <br /> (3.5 cm35 mm <br />0.035 m <br />) +
2 cm20 mm <br />0.02 m <br /> (2.5 cm25 mm <br />0.025 m <br />) +
1 cm10 mm <br />0.01 m <br /> (2 cm20 mm <br />0.02 m <br />) +
0.8 cm8 mm <br />0.008 m <br /> (?) +  and 2 cm20 mm <br />0.02 m <br /> (?) +
linear +  and oblanceolate +
palmate +  and pinnate +
1/4 +  and 1/2 +
inferior +  and superior +
clustered +, biseriate +  and superposed +
10 cm100 mm <br />0.1 m <br /> (17 cm170 mm <br />0.17 m <br />) +
curved +  and straight +
3 cm30 mm <br />0.03 m <br /> (10 cm100 mm <br />0.1 m <br />) +
0.9 cm9 mm <br />0.009 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 /> (0.9 cm9 mm <br />0.009 m <br />) +
0.5 cm5 mm <br />0.005 m <br /> (0.9 cm9 mm <br />0.009 m <br />) +
4 cm40 mm <br />0.04 m <br /> (8 cm80 mm <br />0.08 m <br />) +
0.3 cm3 mm <br />0.003 m <br /> (4 cm40 mm <br />0.04 m <br />) +
Flowering May–Aug(–Nov). +
adnate +, free +, connate +  and distinct +
palmate +  and ternate +
20 cm200 mm <br />0.2 m <br /> (30 cm300 mm <br />0.3 m <br />) +
2 cm20 mm <br />0.02 m <br /> (20 cm200 mm <br />0.2 m <br />) +
Veg. Europ. +
1 cm10 mm <br />0.01 m <br /> (4 cm40 mm <br />0.04 m <br />) +
not arillate +
0.3 cm3 mm <br />0.003 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
persistent +
free +  and distinct +
erect +  and spreading +
lanceolate +  and broadly ovate or deltate +
0.4 cm4 mm <br />0.004 m <br /> (0.6 cm6 mm <br />0.006 m <br />) +
Introduced +
free +  and distinct +
rooting +  and branched +
reddish +  and green +
(1-)2-10+ times basal leaves +
ascending +  and erect +
1 +  and many +
flagelliform +
palmate +  and pinnate +
deciduous +
distinct +
subapical +
papillate-swollen +, columnar-clavate +  and more or less filiform +
rough-thickened +
0.09 cm0.9 mm <br />9.0e-4 m <br /> (0.15 cm1.5 mm <br />0.0015 m <br />) +
Potentilla sect. Tormentilla +  and Undefined sect. Tormentilla +
Potentilla anglica +
Potentilla sect. Potentilla +
species +
2 +  and 4 +
inconspicuous +
enlarged +
biennial +, annual +  and perennial +
herb +  and matted +