Potentilla hippiana

Lehmann

Nov. Stirp. Pug. 2: 7. 1830.

Common names: Woolly or Hipp’s cinquefoil potentille de Hipp
EndemicIllustrated
Basionym: Potentilla leucophylla Torrey Ann. Lyceum Nat. Hist. New York 2: 197. 1827,
Synonyms: P. argyrea Rydberg P. effusa var. argyrea (Rydberg) Soják P. hippiana var. argyrea (Rydberg) B. Boivin P. hippiana var. diffusa Lehmann P. propinqua
Treatment appears in FNA Volume 9. Treatment on page 162. Mentioned on page 150, 152, 153, 158, 159, 161, 163, 164, 165, 178, 216.

Stems (0.3–) 2–4 (–5) dm, lengths (1–) 2–4 times basal leaves. Basal leaves pinnate to subpinnate, (3–) 5–15 (–25) cm; petiole 1–10 (–15) cm, long hairs abundant to dense, tightly appressed, 1–2.5 mm, stiff, short hairs absent or obscured, crisped-cottony hairs absent or sparse to common, glands absent or obscured; leaflets not conduplicate, lateral ones evenly (to unevenly in argyrea phase) paired, (2–) 3–6 (–7) per side on distal (1/6–) 1/5–1/2 of leaf axis, distal pairs ± decurrent, often confluent with terminal leaflet, larger leaflets oblanceolate or narrowly obovate to oblong, 1–5 (–6) × 0.3–1.5 cm, distal (2/3–) 3/4 to whole margin incised 1/2 or less (rarely more) to midvein, teeth (5–) 7–12 (–18) per side, 1–4 mm, surfaces ± to strongly dissimilar, abaxial white, long hairs abundant (mostly on, but not limited to, veins), 1–2 mm, stiff, short hairs absent or obscured, crisped-cottony hairs abundant to dense, glands absent or obscured, adaxial green to grayish, long hairs sparse to common, rarely absent, short or crisped to, sometimes, cottony hairs absent or sparse to common, glands sparse. Cauline leaves 1–2 (–3). Inflorescences 10–30-flowered. Pedicels 0.3–3 (–5) cm. Flowers: epicalyx bractlets narrowly elliptic to lanceolate, rarely linear, 2–5 × 0.5–1.5 mm, (1/2–) 2/3 as long as sepals, abaxial vestiture similar to or ± sparser than sepals, usually not glabrescent, straight hairs ± abundant, crisped to sometimes ± cottony hairs absent or sparse to abundant; hypanthium 3–7 mm diam.; sepals 4–5.5 (–6.5) mm, apex acute to acuminate; petals 4–8 × 4–7 mm; filaments 0.5–2.5 mm, anthers 0.6–1.1 mm; carpels (5–) 10–30, styles 1.7–2.5 mm. Achenes 1.4–1.8 mm, smooth to faintly rugose. 2n = 42, 70, 77, 84, 98.


Phenology: Flowering summer.
Habitat: Dry grasslands and meadows, in aspen and conifer woodlands or alpine tundra, disturbed sites
Elevation: 500–3400 m

Distribution

V9 235-distribution-map.jpg

Alta., B.C., Man., N.W.T., N.S., Ont., Que., Sask., Ariz., Colo., Idaho, Mich., Minn., Mont., Nebr., Nev., N.Mex., N.Dak., S.Dak., Utah, Wyo.

Discussion

Potentilla hippiana is most common and distinctive in the Colorado Plateau and southern Rocky Mountains, with outliers in the mountains of Arizona, Nevada, and New Mexico. Occurrences are more scattered in the northern Rocky Mountains and Great Plains, where intergradation with P. effusa is common. Among these intermediates are the argyrea phase and the single report from Idaho (B. C. Johnston 1980). Potentilla hippiana is probably adventive in Nova Scotia, eastern Ontario, Quebec, and Michigan, and possibly the Northwest Territories. The reported occurrence in central Alaska (E. Hultén 1968) is based on a specimen of P. pensylvanica (CAN).

Significant variation exists throughout the range of Potentilla hippiana, including dwarfism, leaf division, leaflet dissection, adaxial leaflet vestiture, and pedicel length. Some of this variation might merit taxonomic recognition upon further analysis, especially if correlated with ploidy level (6x through 12x). At present, the differences used to distinguish var. argyrea are not found to be sufficiently correlated with distribution to merit formal taxonomic recognition.

Complicating the infraspecific variation is a tendency for Potentilla hippiana to intergrade with other species, in particular P. effusa. Beyond sect. Leucophyllae, the frequency of hybrids with P. pulcherrima blurs the distinction between the two species; P. gracilis var. hippianoides S. L. Welsh & N. D. Atwood is probably one of the resultant intermediates.

Selected References

None.

Lower Taxa

None.

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

... more about "Potentilla hippiana"
98 +, 84 +, 77 +, 70 +  and 42 +
smooth +  and faintly rugose +
1.4mm +  and 1.8mm +
green +  and grayish +
0.06 cm0.6 mm <br />6.0e-4 m <br /> (0.11 cm1.1 mm <br />0.0011 m <br />) +
Barbara Ertter +  and James L. Reveal +
Lehmann +
pinnate +  and subpinnate +
15 cm150 mm <br />0.15 m <br /> (25 cm250 mm <br />0.25 m <br />) +
5 cm50 mm <br />0.05 m <br /> (15 cm150 mm <br />0.15 m <br />) +
Potentilla leucophylla +
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 +
Woolly or Hipp’s cinquefoil +  and potentille de Hipp +
Alta. +, B.C. +, Man. +, N.W.T. +, N.S. +, Ont. +, Que. +, Sask. +, Ariz. +, Colo. +, Idaho +, Mich. +, Minn. +, Mont. +, Nebr. +, Nev. +, N.Mex. +, N.Dak. +, S.Dak. +, Utah +  and Wyo. +
not +  and aggregated +
500–3400 m +
0.2 cm2 mm <br />0.002 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
narrowly elliptic +  and lanceolate +
0.05 cm0.5 mm <br />5.0e-4 m <br /> (0.15 cm1.5 mm <br />0.0015 m <br />) +
0.05 cm0.5 mm <br />5.0e-4 m <br /> (0.25 cm2.5 mm <br />0.0025 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 />) +
weak +  and stiff +
Dry grasslands and meadows, in aspen and conifer woodlands or alpine tundra, disturbed sites +
stoloniferous +  and short-rhizomatous +
straight +
cottony +  and crisped-cottony +
sparse +  and abundant +
crisped +
0.1 cm1 mm <br />0.001 m <br /> (0.2 cm2 mm <br />0.002 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 /> (0.7 cm7 mm <br />0.007 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 +
5 cm50 mm <br />0.05 m <br /> (6 cm60 mm <br />0.06 m <br />) +
1 cm10 mm <br />0.01 m <br /> (5 cm50 mm <br />0.05 m <br />) +
0.3 cm3 mm <br />0.003 m <br /> (1.5 cm15 mm <br />0.015 m <br />) +
bipinnate +, odd-pinnate +, subpalmate +, palmate +  and ternate +
opposite +  and alternate +
marcescent +
well-developed +
persistent +
cauline +  and basal +
reduced +
oblanceolate +  and narrowly obovate oblong or cuneate +
linear +  and oblanceolate +
palmate +  and pinnate +
less +, 1/4 +  and 1/2 +
inferior +  and superior +
clustered +, biseriate +  and superposed +
3 cm30 mm <br />0.03 m <br /> (5 cm50 mm <br />0.05 m <br />) +
0.3 cm3 mm <br />0.003 m <br /> (3 cm30 mm <br />0.03 m <br />) +
0.3 cm3 mm <br />0.003 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
free +  and distinct +
0.4 cm4 mm <br />0.004 m <br /> (0.8 cm8 mm <br />0.008 m <br />) +
usually longer +
0.4 cm4 mm <br />0.004 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 />) +
10 cm100 mm <br />0.1 m <br /> (15 cm150 mm <br />0.15 m <br />) +
1 cm10 mm <br />0.01 m <br /> (10 cm100 mm <br />0.1 m <br />) +
Flowering summer. +
adnate +, free +, connate +  and distinct +
pinnate +  and subpinnate +
45 cm450 mm <br />0.45 m <br /> (50 cm500 mm <br />0.5 m <br />) +
3 cm30 mm <br />0.03 m <br /> (45 cm450 mm <br />0.45 m <br />) +
Nov. Stirp. Pug. +
not arillate +
0.55 cm5.5 mm <br />0.0055 m <br /> (0.65 cm6.5 mm <br />0.0065 m <br />) +
persistent +
free +  and distinct +
erect +  and spreading +
lanceolate +  and broadly ovate or deltate +
0.4 cm4 mm <br />0.004 m <br /> (0.55 cm5.5 mm <br />0.0055 m <br />) +
Endemic +  and Illustrated +
free +  and distinct +
not rooting +
reddish +  and green +
(1-)2-4 times basal leaves +
ascending +  and erect +
1 +  and many +
not flagelliform +
palmate +  and pinnate +
0.1 cm1 mm <br />0.001 m <br /> (0.15 cm1.5 mm <br />0.0015 m <br />) +
deciduous +
distinct +
subapical +
papillate-swollen +  and tapered-filiform +
rough-thickened +
0.17 cm1.7 mm <br />0.0017 m <br /> (0.25 cm2.5 mm <br />0.0025 m <br />) +
P. argyrea +, P. effusa var. argyrea +, P. hippiana var. argyrea +, P. hippiana var. diffusa +  and P. propinqua +
not fleshy-thickened +
Potentilla hippiana +
Potentilla sect. Leucophyllae +
species +
7 +  and 12 +
0.1 cm1 mm <br />0.001 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
inconspicuous +
enlarged +
biennial +, annual +  and perennial +
herb +  and matted +