Potentilla thuringiaca

Bernhardi ex Link

Enum. Hort. Berol. Alt. 2: 64. 1822.

Common names: German cinquefoil potentille de Thuringe
Introduced
Synonyms: Potentilla chrysantha subsp. thuringiaca (Bernhardi ex Link) Ascherson & Graebner P. goldbachii Ruprecht P. nestleriana Trattinnick
Treatment appears in FNA Volume 9. Treatment on page 146. Mentioned on page 147.

Glands sparse, uncolored, minute. Stems 1.5–5 (–7) dm. Basal leaves 4–25 (–35) cm; petiole 2–20 (–25) cm, hairs sparse to common, ± spreading, 1–2.5 mm, weak, glands absent or sparse; leaflets 5–7 (–9), central one narrowly to broadly oblanceolate, 1–6 (–9) × 0.5–2 cm, distal 2/3–3/4+ of margin incised 1/4–1/3 (–1/2) to midvein, teeth (4–) 6–10 (–13) per side, surfaces ± similar, abaxial green to pale green, hairs sparse to common on primary-veins, ascending to spreading, 0.5–1.5 mm, weak, adaxial green, hairs more appressed and shorter. Cauline leaves 1–3; stipules fused with less than 1/3 of petiole, free portion longer than fused portion. Inflorescences 5–20-flowered. Pedicels 1–3 cm (proximalmost to 5 cm). Flowers: epicalyx bractlets linear to lanceolate, 3–8 × 1–1.5 (–2) mm; hypanthium 3–5 mm diam.; sepals 3–5 mm, apex ± acute; petals (5–) 8–10 × 4–10 mm; filaments 0.3–1.5 mm, anthers 0.7–0.9 mm; carpels 35–50, styles 1.1–1.3 mm. Achenes 1–1.2 mm, faintly rugose. 2n = 42, 56 (Eurasia).


Phenology: Flowering late spring–summer.
Habitat: Edges of and openings in hardwood and conifer woodlands
Elevation: 0–100 m

Distribution

V9 211-distribution-map.jpg

Introduced; Que., R.I., Eurasia

Discussion

Potentilla thuringiaca might be mistaken for the more widely established P. intermedia of sect. Terminales. In addition to having flowering stems lateral to persistent basal leaves, P. thuringiaca has much larger petals (mostly 8–10 mm versus 4–5 mm), 5–9 leaflets, and tubercles at the bases of the long, spreading hairs.

To the Quebec records (and subsequent collections) reported by R. Cayouette (1966) is added Block Island, Rhode Island (Fernald et al. 9650, GH).

Selected References

None.

Lower Taxa

None.

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

... more about "Potentilla thuringiaca"
green +  and pale green +
1mm +  and 1.2mm +
0.07 cm0.7 mm <br />7.0e-4 m <br /> (0.09 cm0.9 mm <br />9.0e-4 m <br />) +
Reidar Elven +, Barbara Ertter +  and James L. Reveal +
Bernhardi ex Link +
compound +  and simple +
opposite +  and alternate +
25 cm250 mm <br />0.25 m <br /> (35 cm350 mm <br />0.35 m <br />) +
4 cm40 mm <br />0.04 m <br /> (25 cm250 mm <br />0.25 m <br />) +
Chrysanthae +
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 +
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 />) +
1/4 +  and 1/3-1/2 +
0.5 cm5 mm <br />0.005 m <br /> (2 cm20 mm <br />0.02 m <br />) +
German cinquefoil +  and potentille de Thuringe +
Que. +, R.I. +  and Eurasia +
not +  and aggregated +
0–100 m +
0.15 cm1.5 mm <br />0.0015 m <br /> (0.2 cm2 mm <br />0.002 m <br />) +
0.3 cm3 mm <br />0.003 m <br /> (0.8 cm8 mm <br />0.008 m <br />) +
linear +  and lanceolate +
0.1 cm1 mm <br />0.001 m <br /> (0.15 cm1.5 mm <br />0.0015 m <br />) +
0.03 cm0.3 mm <br />3.0e-4 m <br /> (0.15 cm1.5 mm <br />0.0015 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 />) +
Edges of and openings in hardwood and conifer woodlands +
stoloniferous +  and short-rhizomatous +
straight +
ascending +  and spreading +
sparse +  and common +
crisped +
0.05 cm0.5 mm <br />5.0e-4 m <br /> (0.15 cm1.5 mm <br />0.0015 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 />) +
0.3 cm3 mm <br />0.003 m <br /> (0.5 cm5 mm <br />0.005 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 />) +
crassinucellate +
bipinnate +, odd-pinnate +, subpalmate +, palmate +  and ternate +
opposite +  and alternate +
marcescent +
well-developed +
persistent +
cauline +  and basal +
reduced +
not +  and overlapping +
oblanceolate-elliptic +  and obovate +
linear +  and oblanceolate +
palmate +  and pinnate +
1/4 +  and 1/3-1/2 +
inferior +  and superior +
clustered +, biseriate +  and superposed +
3 cm30 mm <br />0.03 m <br /> (6 cm60 mm <br />0.06 m <br />) +
curved +  and straight +
1 cm10 mm <br />0.01 m <br /> (3 cm30 mm <br />0.03 m <br />) +
0.5 cm5 mm <br />0.005 m <br /> (0.8 cm8 mm <br />0.008 m <br />) +
0.4 cm4 mm <br />0.004 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
free +  and distinct +
0.8 cm8 mm <br />0.008 m <br /> (1 cm10 mm <br />0.01 m <br />) +
0.5 cm5 mm <br />0.005 m <br /> (1 cm10 mm <br />0.01 m <br />) +
0.4 cm4 mm <br />0.004 m <br /> (1 cm10 mm <br />0.01 m <br />) +
20 cm200 mm <br />0.2 m <br /> (25 cm250 mm <br />0.25 m <br />) +
2 cm20 mm <br />0.02 m <br /> (20 cm200 mm <br />0.2 m <br />) +
Flowering late spring–summer. +
adnate +, free +, connate +  and distinct +
fused +  and free +
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 />) +
Enum. Hort. Berol. Alt. +
not arillate +
persistent +
free +  and distinct +
erect +  and spreading +
lanceolate +  and broadly ovate or deltate +
0.3 cm3 mm <br />0.003 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
Introduced +
free +  and distinct +
not rooting +
reddish +  and green +
2-5 times basal leaves +
ascending +  and erect +
1 +  and many +
not flagelliform +
palmate +  and pinnate +
deciduous +
distinct +
subapical +
papillate-swollen +, rarely columnar-filiform +  and tapered +
rough-thickened +
0.11 cm1.1 mm <br />0.0011 m <br /> (0.13 cm1.3 mm <br />0.0013 m <br />) +
green +  and pale green or reddish +
Potentilla chrysantha subsp. thuringiaca +, P. goldbachii +  and P. nestleriana +
not fleshy-thickened +
Potentilla thuringiaca +
Potentilla sect. Chrysanthae +
species +
6 +  and 10 +
incised +
inconspicuous +
enlarged +
tufted +  and rosetted +
biennial +, annual +  and perennial +
herb +  and matted +