Flora of North America species comparison

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Sibbaldiopsis tridentata

potentille tridentée, shrubby fivefingers, three-tooth-cinquefoil
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.

Sibbaldiopsis tridentata
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 (0–6200 ft)
Distribution
from FNA
CT; GA; IA; IL; MA; MD; ME; MI; MN; NC; ND; NH; NJ; NY; PA; RI; TN; VA; VT; WI; WV; AB; MB; NB; NL; NS; NT; NU; ON; PE; QC; SK; SPM; Greenland
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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

(Discussion copyrighted by Flora of North America; reprinted with permission.)
Source FNA vol. 9, p. 300.
Parent taxa Rosaceae > subfam. Rosoideae > tribe Potentilleae > Sibbaldiopsis
Synonyms Potentilla tridentata, Sibbaldia tridentata
Name authority (Aiton) Rydberg: Monogr. N. Amer. Potentilleae, 187. (1898)
Web links 
Unless otherwise noted, all data comes from the online version of the Flora of North America, who have made most of their content available via a Creative Commons license (CC BY 4.0).



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