Sibbaldiopsis tridentata

(Aiton) Rydberg

Monogr. N. Amer. Potentilleae, 187. 1898.

Common names: Three-toothed cinquefoil potentille tridentée
Conservation concernEndemicIllustrated
Basionym: Potentilla tridentata Aiton Hort. Kew. 2: 216, plate 9. 1789
Synonyms: Sibbaldia tridentata (Aiton) Paule & Soják
Treatment appears in FNA Volume 9. Treatment on page 300. Mentioned on page 299.

Leaves: stipules 3–6 mm, margins villous-ciliate; petiole slender, (0.2–) 0.5–6 (–8) cm; leaflets dark green abaxially, light green adaxially, (0.5–) 1–3 (–4) × 0.4–1.5 (–1.8) cm. Pedicels 2–35 mm, glabrous. Flowers: epicalyx bractlets lanceolate, 1–2 mm; sepals 2–3 mm, hirsute, glandular; petals white, sometimes pink-tinged, (4–) 5–8 [–11] mm; anthers reddish, 0.3–0.6 mm; styles 1–2.5 (–3) mm. Achenes dark-brown. 2n = 14, 28.


Phenology: Flowering summer.
Habitat: Dry rocky to gravelly shores or maritime habitats, rocky outcrops, montane balds and promontories in mixed conifer-hardwood woodlands, dry meadows of montane conifer communities, alpine tundra, often in acidic soil
Elevation: 0–1900 m

Distribution

V9 486-distribution-map.jpg

Greenland, St. Pierre and Miquelon, Alta., Man., N.B., Nfld. and Labr., N.W.T., N.S., Nunavut, Ont., P.E.I., Que., Sask., Conn., Ga., Ill., Iowa, Maine, Md., Mass., Mich., Minn., N.H., N.J., N.Y., N.C., N.Dak., Pa., R.I., Tenn., Vt., Va., W.Va., Wis.

Discussion

Sibbaldiopsis tridentata is uncommon to rare through most of its southern range from Connecticut south to Georgia and west to Iowa, Tennessee, and North Dakota. It is more common in Canada and around the Great Lakes. The inclusion of Scotland in the distribution of the species by P. A. Rydberg (1898) is erroneous (T. Wolf 1908).

of conservation concern

Selected References

None.

Lower Taxa

None.
... more about "Sibbaldiopsis tridentata"
strigose +  and pilose +
pilose +, strigose +  and glabrous +
0.03 cm0.3 mm <br />3.0e-4 m <br /> (0.06 cm0.6 mm <br />6.0e-4 m <br />) +
Barbara Ertter +  and James L. Reveal +
(Aiton) Rydberg +
Potentilla tridentata +
3 cm30 mm <br />0.03 m <br /> (4 cm40 mm <br />0.04 m <br />) +
obovate +
1 cm10 mm <br />0.01 m <br /> (3 cm30 mm <br />0.03 m <br />) +
reduced +
free +  and distinct +
Three-toothed cinquefoil +  and potentille tridentée +
narrow +  and broad +
Greenland +, St. Pierre and Miquelon +, Alta. +, Man. +, N.B. +, Nfld. and Labr. +, N.W.T. +, N.S. +, Nunavut +, Ont. +, P.E.I. +, Que. +, Sask. +, Conn. +, Ga. +, Ill. +, Iowa +, Maine +, Md. +, Mass. +, Mich. +, Minn. +, N.H. +, N.J. +, N.Y. +, N.C. +, N.Dak. +, Pa. +, R.I. +, Tenn. +, Vt. +, Va. +, W.Va. +  and Wis. +
not +  and aggregated +
0–1900 m +
0.1 cm1 mm <br />0.001 m <br /> (0.2 cm2 mm <br />0.002 m <br />) +
not flattened +  and filiform +
1 cm10 mm <br />0.01 m <br /> (2 cm20 mm <br />0.02 m <br />) +
unisexual +  and bisexual +
not +  and aggregated +
deciduous +
0.12 cm1.2 mm <br />0.0012 m <br /> (0.15 cm1.5 mm <br />0.0015 m <br />) +
Dry rocky to gravelly shores or maritime habitats, rocky outcrops, montane balds and promontories in mixed conifer-hardwood woodlands, dry meadows of montane conifer communities, alpine tundra, often in acidic soil +
suffrutescent +
0.15 cm1.5 mm <br />0.0015 m <br /> (0.2 cm2 mm <br />0.002 m <br />) +
0.05 cm0.5 mm <br />5.0e-4 m <br /> (0.15 cm1.5 mm <br />0.0015 m <br />) +
0.3 cm3 mm <br />0.003 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
cymose +  and [1-]3-20-flowered +
crassinucellate +
opposite +  and alternate +
persistent +
3 cm30 mm <br />0.03 m <br /> (4 cm40 mm <br />0.04 m <br />) +
1.5 cm15 mm <br />0.015 m <br /> (1.8 cm18 mm <br />0.018 m <br />) +
light green +  and dark green +
1 cm10 mm <br />0.01 m <br /> (3 cm30 mm <br />0.03 m <br />) +
oblanceolate +  and narrowly oblong +
0.4 cm4 mm <br />0.004 m <br /> (?) +  and 1.5 cm15 mm <br />0.015 m <br /> (?) +
pinnate +  and entire +
3(-5)-toothed +, nearly flat +  and more or less revolute +
inferior +  and superior +
clustered +, biseriate +  and superposed +
0.2 cm2 mm <br />0.002 m <br /> (3.5 cm35 mm <br />0.035 m <br />) +
0 (?) +  and 4 (?) +
0.8 cm8 mm <br />0.008 m <br /> (1.1 cm11 mm <br />0.011 m <br />) +
free +  and distinct +
0.5 cm5 mm <br />0.005 m <br /> (0.8 cm8 mm <br />0.008 m <br />) +
6 cm60 mm <br />0.06 m <br /> (8 cm80 mm <br />0.08 m <br />) +
0.5 cm5 mm <br />0.005 m <br /> (6 cm60 mm <br />0.06 m <br />) +
Flowering summer. +
adnate +, free +, connate +  and distinct +
Monogr. N. Amer. Potentilleae, +
not arillate +
persistent +
free +  and distinct +
erect +  and spreading +
0.2 cm2 mm <br />0.002 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
Conservation concern +, Endemic +  and Illustrated +
free +  and distinct +
branched +  and simple +
ascending +  and erect +
1 +  and 10 +
palmate +  and pinnate +
0.3 cm3 mm <br />0.003 m <br /> (0.6 cm6 mm <br />0.006 m <br />) +
0.25 cm2.5 mm <br />0.0025 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
deciduous +
distinct +
proximal +  and middle +
filiform +
0.1 cm1 mm <br />0.001 m <br /> (0.25 cm2.5 mm <br />0.0025 m <br />) +
Sibbaldia tridentata +
Sibbaldiopsis tridentata +
Sibbaldiopsis +
species +
horseshoe--shaped +
inconspicuous +
hemispheric +
enlarged +
rhizomatous +  and stoloniferous +
subshrub +  and matted +
strigose +  and pilose +